2007/2008

C O N T E N T S

Introduction . . . . . . . . . . . . . . . . . . . . 1

ADM4210:.Positive.Hot.Swap.....Controller . . . . . . . . . . . . . . . . . . . . 2

ADM1170/ADM1171/ADM1172:....Positive.Hot.Swap.Controllers. . . . . 3

ADM1191/ADM1192:.Digital.Power....Monitors.with.I2C. . . . . . . . . . . . . . . 4

ADM1175/ADM1176/ADM1177/.ADM1178:.Hot.Swap.with.I2C.Digital.....Power.Monitoring . . . . . . . . . . . . . . 5

ADM4073:.High-Side,.Voltage.Output,....Current-Sense.Amplifier . . . . . . . . . 6

ADM1070:.–48.V.Hot.Swap.....Controller . . . . . . . . . . . . . . . . . . . . 6

ADM1073:.Full.Feature.–48.V.....Hot.Swap.Controller . . . . . . . . . . . . 7

A N A L O G D E V I C E S A P P L I C A T I O N S B U L L E T I N

HOT SwAP AND POwER MONITORING

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ADI Introduces the World’s Most Accurate Digital Power Monitors

GND

+V

Storage Plug-In Modules Servers

Hot Swap Control Captured Power Usage Data

VOLTAGE

CURRENT

ON

TIMER

GATE

ILOAD

VOUTPOWER

ADM1175

INRUSH CURRENT IS LIMITED

CONTROLLER

WATTS

P

I2CBUS

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Features

•.Controls.supply.rails.from.2 .7.V.to.16 .5.V

•.50.mV.sense.voltage.limit.providing.minimal.voltage.drop.losses

•.Charge.pumped.gate.drive.for.N-channel.FET.

•.Automatic.retry.or.latch-off

•.6-lead.TSOT.package

ADM4210: Positive Hot Swap Controller

The ADM4�10 is a positive, high-side hot swap controller that safely enables a printed circuit board to be removed and inserted to a live backplane. An external N-channel power MOSFET and a sense resistor is required. An internal charge pump is used to enhance the gate of the N-channel FET.

VCC

GATE

1.0V

SENSE

GATEDRIVE/LOGIC

ADM4210

1.3V

20

ONVCP

TIMERTIMER

GND

LONG

VIN

VCC

RSENSE

CTIMER

LONG

SHORT

SENSE

ON

TIMER

GND

ADM4210

GATE

GND GND

VOUTQ1

CLOAD

Pin-Compatible Upgrade of LTC4210

Hot Swap Under Normal Conditions

ON

TIMER

GATE

ILOAD

VOUT

INRUSH CURRENT IS LIMITED

Hot Swap Under Shorted Load

ON

TIMER

GATE

ILOAD

VOUT

LOAD CURRENT IS LIMITED

TIMER EXPIRES SO GATE SHUTS DOWN

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Part NumberHot Swap Voltage

Range (V)Soft Start Additional Features Auto Retry Latch-Off

Price ($US)1

ADM1170-1 1 .6.to.16 .5 Yes Separate.VCC.pin Yes — 2 .10.

ADM1170-2 1 .6.to.16 .5 Yes Separate.VCC.pin — Yes 2 .10.

ADM1171-1 2 .7.to.16 .5 Yes Current-sense.output Yes — .2 .20

ADM1171-2 2 .7.to.16 .5 Yes Current-sense.output — Yes .2 .20

ADM1172-1 2 .7.to.16 .5 No Power.fail.comparator Yes — .2 .00

ADM1172-2 2 .7.to.16 .5 No Power.fail.comparator — Yes .2 .001All prices are in USD in quantities greater than 1000.

Features

•.Current-sense.output—ADM1171

•.Power.fail.detector—ADM1172

•.Controls.supply.rails.from.1 .6.V.to.16 .5.V

•.50.mV.sense.voltage.limit.providing.minimal.voltage.drop.losses

•.Charge.pumped.gate.drive.for.external.N-channel.FET

•.Automatic.retry.or.latch-off

•.8-lead.TSOT.package

ADM1170/ADM1171/ADM1172: Positive Hot Swap Controllers

The ADM1170/ADM1171/ADM117� are a series of low voltage, positive, high-side, hot swap controllers that safely enable a printed circuit board to be removed and inserted to a live backplane. This is achieved using an external N-channel power MOSFET with a current control loop that monitors the load current through a sense resistor. An internal charge pump is used to enhance the gate

of the N-channel FET.

LONG

VIN = 5V

RON1

RON2

VOUT = 5V

VCC

RSENSE Q1

CTIMER

LONG

SHORT

SENSE

ON

SS

TIMER

GND

ADM1171GATE

GND GND

CLOAD

CSS

CSOUT

WATTS

PADC

Evaluation KitsAvailable

ON

CSOUT

GATE

ILOAD

VOUT

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Part Number ALERT PolarityNumber of

I2C AddressesAdditional Features

Price ($US)1

ADM1191 ALERTB 16 Convert.pin .1 .90

ADM1192 ALERT 4 Overcurrent.timer 1 .90.1All prices are in USD in quantities greater than 1000.

Features

•.Sensing.from.3 .15.V.to.26.V

•.±1 .5%.accuracy

•.12-bit.ADC.for.current.and.voltage.readback

•.ALERT.output.for.overcurrent.interrupts

•.I2C.fast.mode-compliant.interface

•.Up.to.16.devices.on.the.same.bus

•.10-lead.MSOP

ADM1191/ADM1192: Digital Power Monitors with I2C

The ADM1191 and ADM119� are integrated current-sense amplifiers that offer digital current and voltage monitoring via an on-chip, 1�-bit analog-to-digital converter (ADC), communicated through an I�C® interface.

V

I

0

1

ADM1191

SENSE

SETV

VCC

CONV

MUX

ALERT

GND

COMPARATOR

CURRENT-SENSE

AMPLIFIER

A

SDA

SCL

A1

A0

ALERTB

12-BITADC

I2C

RSENSE

CONTROLLERADM1192

SENSEVCC

SDASCL

GND

GND

ALERT

CLRB

ADR

3.15V TO 26V

WATTS

SETV

TIMER

RON2

CTIMER

CLOAD

P

CURRENT VOLTAGEVOLTAGE

Evaluation KitsAvailable

ADM119x evaluation software.

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Part Number Additional Features Auto Retry Latch-OffPrice ($US)1

ADM1175-1 Manual.convert.pin Yes — 2 .50

ADM1175-2 Manual.convert.pin — Yes .2 .50

ADM1176-1 Additional.address.pin.providing.16.I2C.addresses.in.total Yes — .2 .50

ADM1176-2 Additional.address.pin.providing.16.I2C.addresses.in.total — Yes .2 .50

ADM1177-1 Soft.start 2 .50

ADM1177-2 Soft.start 2 .50

ADM1178-1 Overcurrent.alert.pin Yes — .2 .70

ADM1178-2 Overcurrent.alert.pin — Yes .2 .701All prices are in USD in quantities greater than 1000.

Features

•.Controls.supply.voltages.from.3 .15.V.to.16 .5.V

•.±3%.accurate.hot.swap.current.limit.level

•.12-bit.ADC.for.current.and.voltage.readback

•.Charge.pumped.gate.drive.for.N-channel.FET

•.Adjustable.current.limit.with.circuit.breaker

•.Automatic.retry.or.latch-off.on.current.fault.

•.I2C.fast.mode-compliant.interface

•.10-lead.MSOP

ADM1175/ADM1176/ADM1177/ADM1178: Hot Swap with I2C Digital Power Monitoring

The ADM117�/ADM1176/ADM1177/ADM1178 are a series of integrated hot swap controllers and current-sense amplifiers that offer digital current and voltage monitoring via an on-chip, 1�-bit analog-to-digital converter (ADC), communicated through an I�C interface.

V

I

0

1SENSE

VCC

CONV

MUX

FET DRIVECONTROLLER

GND

UV COMPARATOR

CURRENT-SENSE

AMPLIFIER

A

SDA

SCL

ADR

GATE

TIMER

12-BITADC

I2C

ADM1175-1

ON

1.3V

LONG

VIN = 12V

RON1

RON2

VCC

RSENSE

HOT SWAP CONTROL

Q1

CTIMER

LONG

SHORT

SENSE

ON

SS

TIMER

GND

ADM1177

GATE

GND GND

CLOAD

CSS

CONTROLLER

WATTS

PSDASCL

ADR

CURRENT VOLTAGEVOLTAGE

Evaluation KitsAvailable

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Features

•.Low.cost,.compact,.current-sense.solution

•.Three.available.gain.versions.(20/50/100)

•.Typical.±1 .0%.full-scale.accuracy

•.Wide.1 .8.MHz.bandwidth

•.3.V.to.28.V.operating.supply

•.Wide.2.V.to.28.V.common-mode.range;..operates.from.−40°C.to.+125°C

•.Available.in.a.6-lead.SOT-23.package

ADM4073: High-Side, Voltage Output, Current-Sense Amplifier

The ADM407� is a low cost, high-side, current-sense amplifier ideal for small portable applications. The device is available in three dif-ferent gain models. The voltage on the output pin is determined by the current flowing through the selectable external sense resistor and the gain of the version selected.

Features

•.Typically.operates.from.–36.V.to.–80.V

•.Tolerates.transients.up.to.–200.V.

•.Inrush.current.control

•.Short-circuit.protection

•.Programmable.timeout.in.current.limit

•.Limited.consecutive.retry

•.Single.pin.undervoltage/overvoltage.detection

•.Small,.6-lead.SOT-23.package

ADM1070: –48 V Hot Swap Controller

The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V back-plane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits, and overvoltage and undervoltage conditions. Inrush current is limited to a programmable value by controlling the gate drive of an external

N-channel FET. The current limit can be programmed by the choice of the external sense resistor.

2V TO 28V

3V TO 28V

0.1 F

VOUTRSENSE

ILOAD

IRG1

OUT

RS+

GND

AV

RS–

VCCRG2

RGD = 12k

RG1

ADM4073IRGD

CURRENTMIRROR

Pin-Compatible Upgrade of MAX4073

CENTRAL OFFICE BACKPLANE –48V

–48V

–48V RNT

FAULT TIMERAND CONTROL

100mVREF

SENSE

GATE

ADM1070SOT-23-6PACKAGE

VCC

VREF

R1

R2

RSENSE

TIMER

RDROP

VIN

VEE

UV/OVVIN

45A

N-CHANNELMOSFET

VCC ANDREFERENCEGENERATOR

OVER-/UNDER-VOLTAGE

DETECTIONCIRCUIT

LINEAR INRUSHCURRENT CONTROL

OSCILLATORCIRCUIT

5V3.3VGNDISOLATED

DC-TO-DCCONVERTER

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Features

•.Precision.current.control

•.Soft.start.inrush.current-limit.profiling

•.Additional.SOA.protection.via.FET.drain.monitor

•.Precision.maximum.on-time.in-current.limit

•.PWM.current.control.scheme

•.Limited.number.of.PWM.cycles

•.Continuous.autoretry.with.a.5-second.cooling.period

•.High.transient.voltage.tolerance

•.Separate.UV.and.OV.pins.

•.Power-good.flag

ADM1073: Full Feature –48 V Hot Swap Controller

The ADM107� is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. This device performs the same basic function as the ADM1070 but with the addition of new features providing a more robust and powerful solution. A built-in soft start function allows control of the inrush current profile by an external capacitor on the

soft start pin. The drain of the FET is also monitored to better ensure the FETs SOA is not exceeded during linear regulation of the FET. Separate UV and OV pins are included to provide further programmability. There are also a number of additional I/O pins, which can be used to determine and control the status of the system. The ADM107� features a high accuracy current control loop, which is key to a robust hot swap control solution.

Suitable for High Current Applications

CENTRAL OFFICE BACKPLANE –48V

–48V

VCC

VREF

RDROPVIN

R3

R4

RSENSE

VEE

SENSE

GATE

5 SECSHUTDOWN

EDGETRIGGER

DRAINFOLDBACKAND

PWRGD

SPLYGD

PWM TIMINGCONTROL

FETDRIVE

1msFILTER

R1

R2

SS

OVERVOLTAGEMONITOR

TIMER

UV

OV

CSSCONRON

CLOAD

RDRAIN

N-CHANNELMOSFET

FAULT

–48V RTN

SUPPLYMONITOR

END OFPWM RETRY

PERIOD

PWRGD

SHDN

RESTART

LATCHED

VOUT

UNDERVOLTAGEMONITOR

VCC AND REFERENCEGENERATOR

SOFT STARTRAMP

GENERATOR

0V

0V

0V

GATE

SENSE

VOUT

–48V

0 91 2 3 4 5 6 7 8 10MILLISECONDS

Typical Startup Profiles

+100mV

+12.3V

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Hot Swap Controllers

Part Number Voltage Range (V)

Undervoltage Detection/Overvoltage Detection Digital V and I Readback Additional Features Package Price

($U.S.)1

ADM1070 –18.to.–80 UV/OV.pin — — 6-lead.SOT-23 1 .55

ADM1073 –18.to.–80 UV.pin,.OV.pin —Soft.start,.

drain.pin.monitoring,.additional.I/Os

14-lead.TSSOP 2 .10

ADM1170 1 .6.to.16 .5 ON.pin.(UV) — Soft.start,.separate.VCC.pin 8-lead.TSOT 2 .10

ADM1171 2 .7.to.16 .5 ON.pin.(UV) — Soft.start,.current-sense.output 8-lead.TSOT 2 .20

ADM1172 2 .7.to.16 .5 ON.pin.(UV) — Power.fail.detector 8-lead.TSOT 2 .00

ADM1175 3 .15.to.16 .5 ON.pin.(UV);.ONB.pin.(OV) I2C.interface.with.four.addresses Convert.pin 10-lead.MSOP 2 .50

ADM1176 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.16.addresses — 10-lead.MSOP 2 .50

ADM1177 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.four.addresses Soft.start 10-lead.MSOP 2 .50

ADM1178 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.four.addresses ALERTB.pin 10-lead.MSOP 2 .70

ADM4210 2 .7.to.16 .5 ON.pin.(UV) — — 6-lead.TSOT 2 .981All prices are in USD in quantities greater than 1000.

Digital Power Monitors

Part Number Voltage Range (V)

Overcurrent Timer Digital V and I Readback Additional Features Package Price

($U.S.)1

ADM1191 3 .15.to.26 — I2C.Interface.with.16.addresses Programmable.alert.output,.convert.pin 10-lead.MSOP 1 .90

ADM1192 3 .15.to.26 Capacitor.Programmable I2C.Interface.with.four.addresses Programmable.alert.output,.

timer.CLR.pin 10-lead.MSOP 1 .90

1All prices are in USD in quantities greater than 1000.

Current Sense Amplifiers—High Side

Part Number CM Range (V) Gain Max Sense Voltage

(mV)Supply Range

(V) Accuracy (Typ) Package Price($U.S.)1

ADM4073T 2.to.28 20 150 3.to.28 1% 6-lead.SOT-23 0 .6

ADM4073F 2.to.28 50 150 3.to.28 1% 6-lead.SOT-23 0 .6

ADM4073H 2.to.28 100 150 3.to.28 1% 6-lead.SOT-23 0 .61All prices are in USD in quantities greater than 1000.