AAT2505 Datasheet | AAT

Description The AAT2505 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 cell lithium-ion / polymer batteries. The LDO has an independent input pin and is capable of delivering up to 300m A of current. 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, low dropout voltage, and a Power-OK (POK) open drain output signaling when VOUT is in regulation. The 600m A step-down converter is designed to operate with 1.4MHz of switching frequency, minimizing external ponent size and cost while maintaining a low 27µA no load quiescent current. Features - - System Power™ - - - - VIN Range: 2.7V to 5.5V 300m A LDO - 400m V Dropout Voltage at 300m A - High Accuracy: ±1.5% - Fast Line / Load Transient Response - Power OK Output 600m A Step-Down Converter - Up To 98% Efficiency - 27µA No Load Quiescent Current - Shutdown Current <1µA - Low RDS(ON) Integrated Power Switches - Fast Turn-On Time (150µs Typical) - Low Dropout 100% Duty Cycle - 1.4MHz Switching Frequency - Internal Soft Start Over-Temperature and Current Limit Protection TDFN33-12 Package -40°C to +85°C Temperature Range Peak current mode control with internal pensation provides a stable converter with a low equiv.. alent series resistance (ESR) ceramic output Applications capacitor for extremely low output ripple. For maximum battery life with high voltage outputs, the step-down converter duty cycle increases to 100%. The output voltage is either fixed or adjustable with an integrated P- and N-channel MOSFET power stage and 1.4MHz switching frequency. The AAT2505 is available in a Pb-free, 12-pin TDFN33 package and is rated over a temperature range of -40°C to +85°C. - - -...