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AAT2500

AAT
Part Number AAT2500
Manufacturer AAT
Description Step-Down Converter/LDO Regulator
Published Apr 30, 2007
Detailed Description 1MHz Step-Down Converter/LDO Regulator General Description The AAT2500 is a member of AnalogicTech's Total Power Managem...
Datasheet PDF File AAT2500 PDF File

AAT2500
AAT2500

Overview
1MHz Step-Down Converter/LDO Regulator General Description The AAT2500 is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family.
It is a low dropout (LDO) linear regulator and a step-down converter with an input voltage range of 2.
7V to 5.
5V, making it ideal for applications with single lithium-ion/polymer batteries.
The LDO has an independent input and is capable of delivering up to 300mA.
The linear regulator has been designed for high-speed turn-on and turn-off performance, fast transient response, and good power supply rejection ratio (PSRR).
Other features include low quiescent current and a low dropout voltage.
The 400mA step-down converter is designed to minimize external component size and cost while maintaining a low 25µA no load quiescent current.
Peak current mode control with internal compensation provides a stable converter with a low equivalent series resistance (ESR) ceramic output capacitor for extremely low output ripple.
For maximum battery life, the step-down converter increases to 100% duty cycle and has a typical 180mV dropout voltage at 400mA.
The output voltage is either fixed or adjustable with an integrated P- and N-channel MOSFET power stage and 1MHz switching frequency.
The AAT2500 is available in a 12-pin TDFN33 or STDFN33 package, and is rated over a temperature range of -40°C to +85°C.
www.
DataSheet4U.
com AAT2500 Features • • • • • • • • • • • • • • • • SystemPower™ VIN Range: 2.
7V to 5.
5V 300mA LDO Current Output 400mV LDO Dropout Voltage at 300mA High Output Accuracy: ±1.
5% Fast LDO Line / Load Transient Response 400mA, 96% Efficiency Step-Down Converter 25µA No Load Quiescent Current for StepDown Converter Shutdown Current <1µA Low RDS(ON) 0.
4Ω Integrated Power Switches Low Dropout 100% Duty Cycle 1MHz Switching Frequency Internal Soft Start Over-Temperature Protection Current Limit Protection Available in TDFN33-12 or STDFN33-12 Package -40°C to +85°C Temperature Range Applications • • • • • • Cellular P...


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