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AAT2512

AAT
Part Number AAT2512
Manufacturer AAT
Description Dual 400mA High Frequency Buck Converter
Published Apr 30, 2007
Detailed Description Dual 400mA High Frequency Buck Converter General Description The AAT2512 is a member of AnalogicTech's Total Power Manag...
Datasheet PDF File AAT2512 PDF File

AAT2512
AAT2512

Overview
Dual 400mA High Frequency Buck Converter General Description The AAT2512 is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family.
It is a dual channel synchronous buck converter operating with an input voltage range of 2.
7V to 5.
5V, making it ideal for applications with singlecell lithium-ion/polymer batteries.
Both regulators have independent input and enable pins.
Offered with fixed or adjustable output voltages, each channel is designed to operate with 27µA (typical) of quiescent current, allowing for high efficiency under light load conditions.
The AAT2512 requires only three external components (CIN, COUT, and LX) for each converter, minimizing cost and real estate.
Both channels are designed to deliver 400mA of load current and operate with a switching frequency of 1.
4MHz, reducing the size of external components.
The AAT2512 is available in a Pb-free, 12-pin TDFN33 package and is rated over the -40°C to +85°C temperature range.
AAT2512 Features • • • • • • • • • • • • SystemPower™ VIN Range: 2.
7V to 5.
5V Output Current: — Channel 1: 400mA — Channel 2: 400mA 98% Efficient Step-Down Converter Integrated Power Switches 100% Duty Cycle 1.
4MHz Switching Frequency Internal Soft Start 150µs Typical Turn-On Time Over-Temperature Protection Current Limit Protection Available in TDFN33-12 Package -40°C to +85°C Temperature Range Applications Cellular Phones Digital Cameras Handheld Instruments Microprocessor / DSP Core/ IO Power PDAs and Handheld Computers • • www.
DataSheet4U.
com • • • Typical Application V OUT1 L1 4.
7µH VIN1 LX1 V BAT C IN VIN2 FB1 AAT2512 EN1 LX2 L2 4.
7µH VOUT2 EN2 GND FB2 4.
7µF COUT 4.
7µF 2512.
2006.
06.
1.
4 1 Dual 400mA High Frequency Buck Converter Pin Descriptions Pin # 1 2 AAT2512 Symbol EN1 FB1 Function Enable pin for Channel 1.
When connected low, it disables the channel and consumes less than 1µA of current.
When connected high, normal operation.
Feedback input pin for Channel 1.
This pin is conne...


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