IR3870M SupIRBuck™ Integrated Voltage Regulator PRESS RELEASE DATA SHEETS HI-RES GRAPHIC Features • Input voltage range: 3V to 26V • Output voltage range: 0.5V to 12 • Continuous 10A load capability • Constant on-time control • Excellent efficiency at very low output current levels • Gate drive charge pump option to maximize efficiency at higher output current levels • Compensation loop not required • Programmable switching frequency, soft start, and over current protection • Power good output • Precision voltage reference (0.5V, +/- 1%) • Enable input with voltage monitoring capability • Pre-bias start up • Under/over voltage fault protection • Ultra small, low profile 5 x 6 mm SuPIRBuck™ PAGE The IR3870M SupIRBuck™ is an integrated voltage regulator for notebook and desktop computers, game consoles, consumer electronics applications such as set top boxes and general purpose point- of-load (POL) DC-DC converters. The IR3870M features IR’s latest advances in control IC, MOSFET and package integration technologies and is an easy-to-use and fully integrated DC-DC voltage regulator designed to deliver maximum efficiency in systems that require light load as well as full load performance. Advantages • The IR3870M features a hysteretic constant on-time modulator with adaptive dead-time control and on-state resistance (R DS(on) ) current sensing to achieve maximum efficiency for notebooks. • The IR3870 is capable of delivering up to 10A in environments with up to 60C ambient temperatures and features diode emulation for improved light load efficiency. The device also offers a charge pump output (CPO) option for enhancing the MOSFET gate drive to deliver highest efficiency at medium to full load conditions. • The IR3870 has a wide input voltage range of 3V to 26V and can be programmed for output voltages of 0.5V to 12V by an external resistor divider network. • The IR3870M also features pre-boas start-up, very precise 0.5V reference, over- and under-voltage shut down, power good output and enable input with voltage monitoring capability. The device also offers constant on-time control, programmable switching frequency, soft start, and over-current protection. • The same feature-rich controller IC utilized in the IR3870M is also available as a stand-alone device, the

IR3870M SupIRBuck ™ Integrated Voltage Regulator

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PRESS RELEASE. IR3870M SupIRBuck ™ Integrated Voltage Regulator. DATA SHEETS. - PowerPoint PPT Presentation

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IR3870M SupIRBuck™ Integrated Voltage Regulator

PRESS RELEASE

DATA SHEETS

HI-RES GRAPHIC

Features• Input voltage range: 3V to 26V• Output voltage range: 0.5V to 12• Continuous 10A load capability• Constant on-time control• Excellent efficiency at very low output current

levels• Gate drive charge pump option to maximize

efficiency at higher output current levels• Compensation loop not required• Programmable switching frequency, soft start,

and over current protection• Power good output• Precision voltage reference (0.5V, +/- 1%)• Enable input with voltage monitoring capability• Pre-bias start up• Under/over voltage fault protection• Ultra small, low profile 5 x 6 mm QFN package

SuPIRBuck™ PAGE

The IR3870M SupIRBuck™ is an integrated voltage regulator for notebook and desktop computers, game consoles, consumer electronics applications such as set top boxes and general purpose point-of-load (POL) DC-DC converters. The IR3870M features IR’s latest advances in control IC, MOSFET and package integration technologies and is an easy-to-use and fully integrated DC-DC voltage regulator designed to deliver maximum efficiency in systems that require light load as well as full load performance.

Advantages• The IR3870M features a hysteretic constant on-time modulator with

adaptive dead-time control and on-state resistance (RDS(on)) current sensing to achieve maximum efficiency for notebooks.

• The IR3870 is capable of delivering up to 10A in environments with up to 60C ambient temperatures and features diode emulation for improved light load efficiency. The device also offers a charge pump output (CPO) option for enhancing the MOSFET gate drive to deliver highest efficiency at medium to full load conditions.

• The IR3870 has a wide input voltage range of 3V to 26V and can be programmed for output voltages of 0.5V to 12V by an external resistor divider network.

• The IR3870M also features pre-boas start-up, very precise 0.5V reference, over- and under-voltage shut down, power good output and enable input with voltage monitoring capability. The device also offers constant on-time control, programmable switching frequency, soft start, and over-current protection.

• The same feature-rich controller IC utilized in the IR3870M is also available as a stand-alone device, the IR3710M. This device allows designers who use the IR3870 for lighter loads to easily scale up to loads as high as 24A by using the IC with a pair of external IR MOSFETs.