AAT2500 Datasheet | AAT

Description The AAT2500 is a member of Analogic Tech'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 300m A. 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 400m A step-down converter is designed to minimize external ponent size and cost while maintaining a low 25µA no load quiescent current. Peak current mode control with internal pensation 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 180m V dropout voltage at 400m A. 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. .. Features - - - - - - - - - - - - - - - - System Power™ VIN Range: 2.7V to 5.5V 300m A LDO Current Output 400m V LDO Dropout Voltage at 300m A High Output Accuracy: ±1.5% Fast LDO Line / Load Transient Response 400m A, 96% Efficiency Step-Down Converter 25µA No Load Quiescent Current for Step Down 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 Phones Digital Cameras Handheld Instruments Microprocessor/DSP Core/IO...