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SEMICONDUCTORTECHNICAL DATA
Order this document by MC7800/D
D2T SUFFIXPLASTIC PACKAGE
CASE 936(D2PAK)
THREETERMINALPOSITIVE FIXED
VOLTAGE REGULATORS
STANDARD APPLICATION
A common ground is required between theinput and the output voltages. The input voltagemust remain typically 2.0 V above the outputvoltage even during the low point on the inputripple voltage.XX,
MC78XXInput
Cin*0.33 F CO**
Output
Pin 1. Input2. Ground3. Output
T SUFFIXPLASTIC PACKAGE
CASE 221A
Heatsink surfaceconnected to Pin 2.
Heatsink surface (shown as terminal 4 incase outline drawing) is connected to Pin 2.
3
12
31 2
These two digits of the type number indicate nominal voltage.Cin is required if regulator is located anappreciable distance from power supplyfilter.CO is not needed for stability; however,it does improve transient response. Values of less than 0.1 F could cause instability.
*
**
1MOTOROLA ANALOG IC DEVICE DATA
These voltage regulators are monolithic integrated circuits designed asfixedvoltage regulators for a wide variety of applications including local,oncard regulation. These regulators employ internal current limiting,thermal shutdown, and safearea compensation. With adequate heatsinkingthey can deliver output currents in excess of 1.0 A. Although designedprimarily as a fixed voltage regulator, these devices can be used withexternal components to obtain adjustable voltages and currents. Output Current in Excess of 1.0 A No External Components Required Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor SafeArea Compensation Output Voltage Offered in 2% and 4% Tolerance Available in Surface Mount D2PAK and Standard 3Lead Transistor
Packages Previous Commercial Temperature Range has been Extended to a
Junction Temperature Range of 40C to +125C
DEVICE TYPE/NOMINAL OUTPUT VOLTAGEMC7805AC
5 0 V
MC7812C12 V
LM340AT55 0 V
LM340T1212 V
MC7805C 5.0 V MC7815AC
15 VLM340T5 LM340AT15
15 VMC7806AC
6 0 VMC7815C
15 V
MC7806C6.0 V
LM340T15MC7808AC
8 0 VMC7818AC
18 VMC7808C
8.0 VMC7818C
18 V
MC7809C 9.0 V MC7824AC24 V
MC7812AC12 V
MC7824C24 V
LM340AT1212 V
ORDERING INFORMATION
DeviceOutput Voltage
ToleranceOperating
Temperature Range Package
MC78XXACT
2%
T 40 125C
Insertion MountLM340ATXX 2%
T 40 125C
Insertion Mount
MC78XXACD2TTJ = 40 to +125C
Surface Mount
MC78XXCT
4%
TJ = 40 to +125C
Insertion MountLM340TXX 4%
Insertion Mount
MC78XXCD2T Surface Mount
XX indicates nominal voltage.
Motorola, Inc. 1997 Rev 5
MC7800, MC7800A, LM340, LM340A Series
2 MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS (TA = 25C, unless otherwise noted.)Rating Symbol Value Unit
Input Voltage (5.0 18 V) VI 35 VdcInput Voltage (24 V) 40Power DissipationCase 221A
TA = 25C PD Internally Limited WThermal Resistance, JunctiontoAmbient RJA 65 C/WThermal Resistance, JunctiontoCase RJC 5.0 C/W
Case 936 (D2PAK)TA = 25C PD Internally Limited WThermal Resistance, JunctiontoAmbient RJA See Figure 13 C/WThermal Resistance, JunctiontoCase RJA 5.0 C/W
Storage Junction Temperature Range Tstg 65 to +150 C
Operating Junction Temperature TJ +150 C
NOTE: ESD data available upon request.
R15680R18100 k
D1Zener
R110.66 k
R21.56 k
R179.0 k
Q7QNPN
LATQ17
Q9QNPN 2
Q8QNPN
Q14QNPN
Q6QNPN
Q5QNPN 2
LAT 3 AQ18
R54.5 k
R61.0 k
Q13QNPN Q2
QNPN 4
SUBQ11 2
R1115 k
QNPN 6
Q1
R714 k
R31.8 k
R85.0 k
Diode
Q16
Q4QNPN
N+C130 PC2
3.0 P
R93.0 k
R16600R2017500
Q15QNPN
Q10QNPN
R22100
Q12QNPN
R2450
1.0 P
R21600
R230.2
R1927.5 k
D2Zener
Q19QNPN
R141.0 k
Q20QNPN
R289.0 k
R279.0 k
R299.0 k
R256.0 k
R263.0 k
R123.0 k
R103340(3316ACT)
R3018 k
Sense
Vout5.01
Vin
R1311660
Q3QNPN
MC7800
C3
Representative Schematic Diagram
This device contains 22 active transistors.
MC7800, MC7800A, LM340, LM340A Series
3MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7805C/LM340T5
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 4.8 5.0 5.2 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO Vdc
7.0 Vdc Vin 20 Vdc 4.75 5.0 5.258.0 Vdc Vin 20 Vdc
Line Regulation (Note 2) Regline mV7.5 Vdc Vin 20 Vdc, 1.0 A 0.5 208.0 Vdc Vin 12 Vdc 0.8 10
Load Regulation (Note 2) Regload mV5.0 mA IO 1.0 A 1.3 255.0 mA IO 1.5 A (TA = 25C) - 1.3 25
Quiescent Current IB 3.2 6.5 mAQuiescent Current Change IB mA
7.0 Vdc Vin 25 Vdc 0.3 1.05.0 mA IO 1.0 A (TA = 25C) 0.08 0.8
Ripple Rejection RR 62 83 dB8.0 Vdc Vin 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 0.9 m
Short Circuit Current Limit (TA = 25C) ISC 0.6 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.3 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7805AC/LM340AT5
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 4.9 5.0 5.1 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 4.8 5.0 5.2 Vdc
7.5 Vdc Vin 20 Vdc
Line Regulation (Note 2) Regline mV7.5 Vdc Vin 25 Vdc, IO = 500 mA 0.5 108.0 Vdc Vin 12 Vdc, IO = 1.0 A 0.8 128.0 Vdc Vin 12 Vdc, IO = 1.0 A, TJ = 25C 1.3 4.07.3 Vdc Vin 20 Vdc, IO = 1.0 A, TJ = 25C 4.5 10
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 1.3 255.0 mA IO 1.0 A 0.8 25250 mA IO 750 mA 0.53 15
Quiescent Current IB 3.2 6.0 mAQuiescent Current Change IB mA
8.0 Vdc Vin 25 Vdc, IO = 500 mA 0.3 0.87.5 Vdc Vin 20 Vdc, TJ = 25C 0.85.0 mA IO 1.0 A 0.08 0.5
Ripple Rejection RR 68 83 dB8.0 Vdc Vin 18 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcNOTES: 1. Tlow = 40C for MC78XXAC, C, LM340ATXX, LM340TXX Thigh = +125C for MC78XXAC, C, LM340ATXX, LM340TXX
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
4 MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7805AC/LM340AT5
Characteristic Symbol Min Typ Max Unit
Output Noise Voltage (TA = 25C) Vn 10 V/VO10 Hz f 100 kHz
Output Resistance (f = 1.0 kHz) rO 0.9 mShort Circuit Current Limit (TA = 25C) ISC 0.2 A
Vin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.3 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C, LM340ATXX, LM340TXX Thigh = +125C for MC78XXAC, C, LM340ATXX, LM340TXX2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7806C
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 5.75 6.0 6.25 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO Vdc
8.0 Vdc Vin 21 Vdc 5.7 6.0 6.39.0 Vdc Vin 21 Vdc
Line Regulation, TJ = 25C (Note 2) Regline mV8.0 Vdc Vin 25 Vdc 0.5 249.0 Vdc Vin 13 Vdc 0.8 12
Load Regulation, TJ = 25C (Note 2) Regload 1.3 30 mV5.0 mA IO 1.5 A
Quiescent Current (TJ = 25C) IB 3.3 8.0 mAQuiescent Current Change IB mA
8.0 Vdc Vin 25 Vdc 0.3 1.35.0 mA IO 1.0 A 0.08 0.5
Ripple Rejection RR 58 65 dB9.0 Vdc Vin 19 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 0.9 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.3 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
5MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7806AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 5.88 6.0 6.12 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 5.76 6.0 6.24 Vdc
8.6 Vdc Vin 21 VdcLine Regulation (Note 2) Regline mV
8.6 Vdc Vin 25 Vdc, IO = 500 mA 5.0 129.0 Vdc Vin 13 Vdc, IO = 1.0 A 1.4 15
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 1.3 255.0 mA IO 1.0 A 0.9 25250 mA IO 750 mA 0.2 15
Quiescent Current IB 3.3 6.0 mAQuiescent Current Change IB mA
9.0 Vdc Vin 25 Vdc, IO = 500 mA 0.89.0 Vdc Vin 21 Vdc, IO = 1.0 A, TJ = 25C 0.85.0 mA IO 1.0 A 0.5
Ripple Rejection RR 58 65 dB9.0 Vdc Vin 19 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance (f = 1.0 kHz) rO 0.9 mShort Circuit Current Limit (TA = 25C) ISC 0.2 A
Vin = 35 VdcPeak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.3 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7808C
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 7.7 8.0 8.3 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 7.6 8.0 8.4 Vdc
10.5 Vdc Vin 23 VdcLine Regulation, TJ = 25C, (Note 2) Regline mV
10.5 Vdc Vin 25 Vdc 6.0 3211 Vdc Vin 17 Vdc 1.7 16
Load Regulation, TJ = 25C (Note 2) Regload 1.4 35 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.3 8.0 mAQuiescent Current Change IB mA
10.5 Vdc Vin 25 Vdc 1.05.0 mA IO 1.0 A 0.5
Ripple Rejection RR 56 62 dB11.5 Vdc Vin 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHzNOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into accountseparately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
6 MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7808C
Characteristic Symbol Min Typ Max Unit
Output Resistance f = 1.0 kHz rO 0.9 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.4 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7808AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 7.84 8.0 8.16 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 7.7 8.0 8.3 Vdc
10.6 Vdc Vin 23 VdcLine Regulation (Note 2) Regline mV
10.6 Vdc Vin 25 Vdc, IO = 500 mA 6.0 1511 Vdc Vin 17 Vdc, IO = 1.0 A 1.7 1810.4 Vdc Vin 23 Vdc, TJ = 25C 5.0 15
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 1.4 255.0 mA IO 1.0 A 1.0 25250 mA IO 750 mA 0.22 15
Quiescent Current IB 3.3 6.0 mAQuiescent Current Change IB mA
11 Vdc Vin 25 Vdc, IO = 500 mA 0.810.6 Vdc Vin 23 Vdc, IO = 1.0 A, TJ = 25C 0.85.0 mA IO 1.0 A 0.5
Ripple Rejection RR 56 62 dB11.5 Vdc Vin 21.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 0.9 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.4 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
7MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (Vin = 15 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7809CT
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 8.65 9.0 9.35 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 8.55 9.0 9.45 Vdc
11.5 Vdc Vin 24 VdcLine Regulation, TJ = 25C (Note 2) Regline mV
11 Vdc Vin 26 Vdc 6.2 3211.5 Vdc Vin 17 Vdc 1.8 16
Load Regulation, TJ = 25C (Note 2) Regload 1.5 35 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.4 8.0 mAQuiescent Current Change IB mA
11.5 Vdc Vin 26 Vdc 1.05.0 mA IO 1.0 A 0.5
Ripple Rejection RR 56 61 dB11.5 Vdc Vin 21.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.0 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.5 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7812C/LM340T12
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 11.5 12 12.5 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 11.4 12 12.6 Vdc
14.5 Vdc Vin 27 VdcLine Regulation, TJ = 25C (Note 2) Regline mV
14.5 Vdc Vin 30 Vdc 3.8 2416 Vdc Vin 22 Vdc 0.3 2414.8 Vdc Vin 27 Vdc, IO = 1.0 A 48
Load Regulation, TJ = 25C (Note 2) Regload 8.1 60 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.4 6.5 mAQuiescent Current Change IB mA
14.5 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25C 0.715 Vdc Vin 30 Vdc 0.85.0 mA IO 1.0 A 0.5
Ripple Rejection RR 55 60 dB15 Vdc Vin 25 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcNOTES: 1. Tlow = 40C for MC78XXAC, C, LM340ATXX, LM340TXX Thigh = +125C for MC78XXAC, C, LM340ATXX, LM340TXX
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into accountseparately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
8 MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7812C/LM340T12
Characteristic Symbol Min Typ Max Unit
Output Noise Voltage (TA = 25C) Vn 10 V/VO10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.1 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.8 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7812AC/LM340AT12
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 11.75 12 12.25 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 11.5 12 12.5 Vdc
14.8 Vdc Vin 27 VdcLine Regulation (Note 2) Regline mV
14.8 Vdc Vin 30 Vdc, IO = 500 mA 3.8 1816 Vdc Vin 22 Vdc, IO = 1.0 A 2.2 2014.5 Vdc Vin 27 Vdc, TJ = 25C 6.0 120
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 255.0 mA IO 1.0 A 25
Quiescent Current IB 3.4 6.0 mAQuiescent Current Change IB mA
15 Vdc Vin 30 Vdc, IO = 500 mA 0.814.8 Vdc Vin 27 Vdc, TJ = 25C 0.85.0 mA IO 1.0 A, TJ = 25C 0.5
Ripple Rejection RR 55 60 dB15 Vdc Vin 25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance (f = 1.0 kHz) rO 1.1 mShort Circuit Current Limit (TA = 25C) ISC 0.2 A
Vin = 35 VdcPeak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 0.8 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C, LM340ATXX, LM340TXX Thigh = +125C for MC78XXAC, C, LM340ATXX, LM340TXX2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
9MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (Vin = 23 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7815C/LM340T15
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 14.4 15 15.6 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 14.25 15 15.75 Vdc
17.5 Vdc Vin 30 VdcLine Regulation, TJ = 25C (Note 2) Regline mV
17.9 Vdc Vin 30 Vdc 8.5 3020 Vdc Vin 26 Vdc 3.0 28
Load Regulation, TJ = 25C (Note 2) Regload 1.8 55 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.5 6.5 mAQuiescent Current Change IB mA
17.5 Vdc Vin 30 Vdc 0.817.5 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25C 0.75.0 mA IO 1.0 A 0.5
Ripple Rejection RR 54 58 dB18.5 Vdc Vin 28.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.2 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 1.0 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 23 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7815AC/LM340AT15
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 14.7 15 15.3 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 14.4 15 15.6 Vdc
17.9 Vdc Vin 30 VdcLine Regulation (Note 2) Regline mV
17.9 Vdc Vin 30 Vdc, IO = 500 mA 8.5 2020 Vdc Vin 26 Vdc 3.0 2217.5 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25C 7.0 20
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 1.8 255.0 mA IO 1.0 A 1.5 25250 mA IO 750 mA 1.2 15
Quiescent Current IB 3.5 6.0 mAQuiescent Current Change IB mA
17.5 Vdc Vin 30 Vdc, IO = 500 mA 0.817.5 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25C 0.85.0 mA IO 1.0 A 0.5
NOTES: 1. Tlow = 40C for MC78XXAC, C, LM340ATXX, LM340TXX Thigh = +125C for MC78XXAC, C, LM340ATXX, LM340TXX2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
10 MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 23 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7815AC/LM340AT15
Characteristic Symbol Min Typ Max Unit
Ripple Rejection RR 60 80 dB18.5 Vdc Vin 28.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.2 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 1.0 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7818C
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 17.3 18 18.7 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 17.1 18 18.9 Vdc
21 Vdc Vin 33 VdcLine Regulation, (Note 2) Regline mV
21 Vdc Vin 33 Vdc 9.5 5024 Vdc Vin 30 Vdc 3.2 25
Load Regulation, (Note 2) Regload 2.0 55 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.5 6.5 mAQuiescent Current Change IB mA
21 Vdc Vin 33 Vdc 1.05.0 mA IO 1.0 A 0.5
Ripple Rejection RR 53 57 dB22 Vdc Vin 33 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) ViI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.3 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 1.5 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
11MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7818AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 17.64 18 18.36 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 17.3 18 18.7 Vdc
21 Vdc Vin 33 VdcLine Regulation (Note 2) Regline mV
21 Vdc Vin 33 Vdc, IO = 500 mA 9.5 2224 Vdc Vin 30 Vdc, IO = 1.0 A 3.2 2524 Vdc Vin 30 Vdc, IO = 1.0 A, TJ = 25C 3.2 10.520.6 Vdc Vin 33 Vdc, IO = 1.0 A, TJ = 25C 8.0 22
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 2.0 255.0 mA IO 1.0 A 1.8 25250 mA IO 750 mA 1.5 15
Quiescent Current IB 3.5 6.0 mAQuiescent Current Change IB mA
21 Vdc Vin 33 Vdc, IO = 500 mA 0.821.5 Vdc Vin 30 Vdc, TJ = 25C 0.85.0 mA IO 1.0 A 0.5
Ripple Rejection RR 53 57 dB22 Vdc Vin 32 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.3 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 1.5 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7824C
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 23 24 25 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 22.8 24 25.2 Vdc
27 Vdc Vin 38 VdcLine Regulation, (Note 2) Regline mV
27 Vdc Vin 38 Vdc 2.7 6030 Vdc Vin 36 Vdc 2.7 48
Load Regulation, (Note 2) Regload 4.4 65 mV5.0 mA IO 1.5 A
Quiescent Current IB 3.6 6.5 mAQuiescent Current Change IB mA
27 Vdc Vin 38 Vdc 1.05.0 mA IO 1.0 A 0.5
NOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
12 MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7824C
Characteristic Symbol Min Typ Max Unit
Ripple Rejection RR 50 54 dB28 Vdc Vin 38 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz rO 1.4 m
Short Circuit Current Limit (TA = 25C) ISC 0.2 AVin = 35 Vdc
Peak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 2.0 mV/C
ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)MC7824AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25C) VO 23.5 24 24.5 VdcOutput Voltage (5.0 mA IO 1.0 A, PD 15 W) VO 23.2 24 25.8 Vdc
27.3 Vdc Vin 38 VdcLine Regulation (Note 2) Regline mV
27 Vdc Vin 38 Vdc, IO = 500 mA 11.5 2530 Vdc Vin 36 Vdc, IO = 1.0 A 3.8 2830 Vdc Vin 36 Vdc, TJ = 25C 3.8 1226.7 Vdc Vin 38 Vdc, IO = 1.0 A, TJ = 25C 10 25
Load Regulation (Note 2) Regload mV5.0 mA IO 1.5 A, TJ = 25C 2.1 155.0 mA IO 1.0 A 2.0 25250 mA IO 750 mA 1.8 15
Quiescent Current IB 3.6 6.0 mAQuiescent Current Change IB mA
27.3 Vdc Vin 38 Vdc, IO = 500 mA 0.827 Vdc Vin 38 Vdc, TJ = 25C 0.85.0 mA IO 1.0 A 0.5
Ripple Rejection RR 45 54 dB28 Vdc Vin 38 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25C) VI VO 2.0 VdcOutput Noise Voltage (TA = 25C) Vn 10 V/VO
10 Hz f 100 kHz
Output Resistance (f = 1.0 kHz) rO 1.4 mShort Circuit Current Limit (TA = 25C) ISC 0.2 A
Vin = 35 VdcPeak Output Current (TJ = 25C) Imax 2.2 AAverage Temperature Coefficient of Output Voltage TCVO 2.0 mV/C
NOTES: 1. Tlow = 40C for MC78XXAC, C Thigh = +125C for MC78XXAC, C2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series
13MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Peak Output Current as a Function ofInput/Output Differential Voltage (MC78XXC, AC)
Figure 2. Ripple Rejection as a Function ofOutput Voltages (MC78XXC, AC)
Figure 3. Ripple Rejection as a Function ofFrequency (MC78XXC, AC)
Figure 4. Output Voltage as a Function ofJunction Temperature (MC7805C, AC)
Figure 5. Output Impedance as a Function ofOutput Voltage (MC78XXC, AC)
Figure 6. Quiescent Current as a Function ofTemperature (MC78XXC, AC)
I O
VinVout, INPUT/OUPUT VOLTAGE DIFFERENTIAL (V)
3.0
2.0
1.5
1.0
04.0 8.0 12 20 30 40
, OU
TPUT
CU
RREN
T (A)
80
70
60
50
404.0 6.0 8.0 10 12 14 16 18 20 22 24
VO, OUTPUT VOLTAGE (V)
RR, R
IPPL
E RE
JECT
ION
(dB)
PART # VinMC7805C = 10 VMC7806C = 11 VMC7808C = 14 VMC7812C = 19 VMC7815C = 23 VMC7818C = 27 VMC7824C = 33 V
80
50
RR, R
IPPL
E RE
JECT
ION
(dB)
0.1 10f, FREQUENCY (kHz)
0.01
, OU
TPUT
VO
LTAG
E (V)
O5.0
4.9
60 20 20 60 100 140 180TJ, JUNCTION TEMPERATURE (C)
V
, OU
TPUT
IM
PEDA
NCE
(m)
O
10
5.0
3.02.0
1.0
0.5
0.30.2
0.14.0 8.0 12 16 20 24VO, OUTPUT VOLTAGE (V)
Z
, QU
IESCE
NT CU
RREN
T (mA
)B
6.0
4.0
3.0
2.0
1.0
075 50
TJ, JUNCTION TEMPERATURE (C)25 0 25 50 75 100 125
I
2.5
0.5
70
40
30
60
4.8
6.0 10 15 25 35
TJ = 85C
TJ = 25C
1.0
f = 120 HzIO = 20 mAVin = 1.0 V(RMS)
TJ = 125C
TJ = 0C
f = 120 HzIO = 500 mACL = 0 F
Vin = 10 VVO = 5.0 VIL = 20 mA
Vin = 20 VIO = 5.0 mA
MC78XXB, C, AC
Vin = 8.0 V to 18 VIO = 500 mAf = 120 HzTA = 25C
TJ = 40C
MC7800, MC7800A, LM340, LM340A Series
14 MOTOROLA ANALOG IC DEVICE DATA
APPLICATIONS INFORMATIONDesign Considerations
The MC7800 Series of fixed voltage regulators aredesigned with Thermal Overload Protection that shuts downthe circuit when subjected to an excessive power overloadcondition, Internal Short Circuit Protection that limits themaximum current the circuit will pass, and Output TransistorSafeArea Compensation that reduces the output shortcircuit current as the voltage across the pass transistor isincreased.
In many low current applications, compensationcapacitors are not required. However, it is recommendedthat the regulator input be bypassed with a capacitor if theregulator is connected to the power supply filter with long
wire lengths, or if the output load capacitance is large. Aninput bypass capacitor should be selected to provide goodhighfrequency characteristics to insure stable operationunder all load conditions. A 0.33 F or larger tantalum,mylar, or other capacitor having low internal impedance athigh frequencies should be chosen. The bypass capacitorshould be mounted with the shortest possible leads directlyacross the regulators input terminals. Normally goodconstruction techniques should be used to minimize groundloops and lead resistance drops since the regulator has noexternal sense lead.
IO5.0 V
R IB
Figure 7. Current Regulator Figure 8. Adjustable Output Regulator
Figure 9. Current Boost Regulator Figure 10. Short Circuit Protection
The MC7800 regulators can also be used as a current source whenconnected as above. In order to minimize dissipation the MC7805C ischosen in this application. Resistor R determines the current as follows:
For example, a 1.0 A current source would require R to be a 5.0 ,10 W resistor and the output voltage compliance would be the inputvoltage less 7.0 V.
IB 3.2 mA over line and load changes.
Input
0.33 F R
IO
MC7805
ConstantCurrent toGroundedLoad
The addition of an operational amplifier allows adjustment to higher orintermediate values while retaining regulation characteristics. Theminimum voltage obtainable with this arrangement is 2.0 V greater than theregulator voltage.
InputMC7805
Output
0.33 F
10 kMC1741G
76
41.0 k
VO = 7.0 V to 20 VVIN = VO 2.0 V
0.1 F3
2
The MC7800 series can be current boosted with a PNP transistor. TheMJ2955 provides current to 5.0 A. Resistor R in conjunction with the VBEof the PNP determines when the pass transistor begins conducting; thiscircuit is not short circuit proof. Input/output differential voltage minimum isincreased by VBE of the pass transistor.
XX = 2 digits of type number indicating voltage.
MC78XX
Input
OutputR
1.0 F
MJ2955 or Equiv.
1.0 F
The circuit of Figure 9 can be modified to provide supply protection againstshort circuits by adding a short circuit sense resistor, RSC, and anadditional PNP transistor. The current sensing PNP must be able to handlethe short circuit current of the threeterminal regulator. Therefore, afourampere plastic power transistor is specified.
XX = 2 digits of type number indicating voltage.
1.0 F
MC78XX
MJ2955or Equiv.
Output
RSC
R
2N6049or Equiv.
10 F
RSource
0.33 F Input
RSource
0.33 F
10 F
MC7800, MC7800A, LM340, LM340A Series
15MOTOROLA ANALOG IC DEVICE DATA
Figure 11. Worst Case Power Dissipation versusAmbient Temperature (Case 221A)
Figure 12. Input Output Differential as a Functionof Junction Temperature (MC78XXC, AC)
, PO
WER
DIS
SIPA
TION
(W)
D
20
16
12
8.0
4.0
050 25 0 25 50 75 100 125 150
TA, AMBIENT TEMPERATURE (C)
P
HS = 0C/W
DIFF
EREN
TIAL
(V)
inou
t, IN
PUT
OUTP
UT VO
LTAG
E
0.5
075 50 25 0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (C)
V
V
IO = 0 mA
IO = 20 mA
IO = 1.0 AIO = 500 mAIO = 200 mA
VO = 2% of VO Extended Curve for MC78XXB
JC = 5C/WJA = 65C/WTJ(max) = 150C
HS = 5C/W
HS = 15C/W
No Heatsink
2.0
1.5
1.0
2.5
Figure 13. D2PAK Thermal Resistance and MaximumPower Dissipation versus P.C.B. Copper Length
R, TH
ERMA
L RES
ISTA
NCE
JA JUNC
TION-
TO-A
IR ( C
/W)
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
0 10 20 3025155.0L, LENGTH OF COPPER (mm)
PD(max) for TA = 50C
MinimumSize Pad
2.0 oz. CopperL
L
Free AirMountedVertically
P D, MA
XIMU
M PO
WER
DIS
SIPA
TION
(W)
RJA
DEFINITIONSLine Regulation The change in output voltage for a
change in the input voltage. The measurement is made underconditions of low dissipation or by using pulse techniques suchthat the average chip temperature is not significantly affected.
Load Regulation The change in output voltage for achange in load current at constant chip temperature.
Maximum Power Dissipation The maximum totaldevice dissipation for which the regulator will operate withinspecifications.
Quiescent Current That part of the input current that isnot delivered to the load.
Output Noise Voltage The rms ac voltage at the output,with constant load and no input ripple, measured over aspecified frequency range.
Long Term Stability Output voltage stability underaccelerated life test conditions with the maximum ratedvoltage listed in the devices electrical characteristics andmaximum power dissipation.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regardingthe suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, andspecifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters which may be provided in Motoroladata sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicalsmust be validated for each customer application by customers technical experts. Motorola does not convey any license under its patent rights nor the rights ofothers. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or otherapplications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injuryor death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorolaand its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney feesarising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges thatMotorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an EqualOpportunity/Affirmative Action Employer.
MC7800, MC7800A, LM340, LM340A Series
16 MOTOROLA ANALOG IC DEVICE DATA
T SUFFIXPLASTIC PACKAGE
CASE 221A06ISSUE Y
OUTLINE DIMENSIONS
MIN MINMAX MAXINCHES MILLIMETERS
DIMABCDFGHJKLNQRSTUVZ
14.489.664.070.643.612.422.800.46
12.701.154.832.542.041.155.970.001.15
15.7510.28
4.820.883.732.663.930.64
14.271.525.333.042.791.396.471.27
2.04
0.5700.3800.1600.0250.1420.0950.1100.0180.5000.0450.1900.1000.0800.0450.2350.0000.045
0.6200.4050.1900.0350.1470.1050.1550.0250.5620.0600.2100.1200.1100.0550.2550.050
0.080
NOTES:1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.2. CONTROLLING DIMENSION: INCH.3. DIM Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
T SEATINGPLANEC
ST
U
JR
FB
Q
H
Z
LV
G
ND
K
A4
1 2 3
D2T SUFFIXPLASTIC PACKAGE
CASE 93603(D2PAK)ISSUE B
5 REF5 REF
A
1 2 3
K
F
B
J
S
H
0.010 (0.254) TMD
G
C
ET
ML
PN
R
V
U
TERMINAL 4
NOTES:1 DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.2 CONTROLLING DIMENSION: INCH.3 TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.4 DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.5 DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASHAND GATE PROTRUSIONS NOT TO EXCEED0.025 (0.635) MAXIMUM.
DIMA
MIN MAX MIN MAXMILLIMETERS
0.386 0.403 9.804 10.236
INCHES
B 0.356 0.368 9.042 9.347C 0.170 0.180 4.318 4.572D 0.026 0.036 0.660 0.914E 0.045 0.055 1.143 1.397F 0.051 REF 1.295 REFG 0.100 BSC 2.540 BSCH 0.539 0.579 13.691 14.707J 0.125 MAX 3.175 MAXK 0.050 REF 1.270 REFL 0.000 0.010 0.000 0.254M 0.088 0.102 2.235 2.591N 0.018 0.026 0.457 0.660P 0.058 0.078 1.473 1.981RS 0.116 REF 2.946 REFU 0.200 MIN 5.080 MINV 0.250 MIN 6.350 MIN
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MC7800/D