AAT2512
AAT2512 is Dual 400mA High Frequency Buck Converter manufactured by AAT.
Description
The AAT2512 is a member of Analogic Tech'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 ponents (CIN, COUT, and LX) for each converter, minimizing cost and real estate. Both channels are designed to deliver 400m A of load current and operate with a switching frequency of 1.4MHz, reducing the size of external ponents. The AAT2512 is available in a Pb-free, 12-pin TDFN33 package and is rated over the -40°C to +85°C temperature range.
Features
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System Power™
VIN Range: 2.7V to 5.5V Output Current:
- Channel 1: 400m A
- Channel 2: 400m A 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 puters
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- Typical Application
V OUT1 L1 4.7µH
VIN1
LX1
V BAT
C IN
VIN2
FB1
EN1 LX2 L2 4.7µH
VOUT2
EN2 GND
FB2 4.7µF
COUT 4.7µF
Dual 400m A High Frequency Buck Converter Pin Descriptions
Pin #
1 2
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 connected to the converter output. It is used to see the output of the...
