AP2203 Datasheet | BCD Semiconductor

Description The AP2203 is a 150m A ULDO regulator, which provides ultra low dropout voltage (typically 165m V at 150m A), very low quiescent current (1µA maximum) in shutdown mode and excellent power supply ripple rejection (PSRR 75d B at 100Hz) in battery powered applications, such as handsets and PDAs and in noise sensitive applications, such as RF electronics. The AP2203 also features an undervoltage monitor with an error flag output, logic patible enable/shutdown control inputs, a low power shutdown mode for extended battery life, over current protection, over temperature protection as well as reversed-battery protection. The AP2203 has 2.5V, 3.0V and 3.3V versions. The AP2203 is available in space saving 5-pin SOT23-5 package. Features - - - - - - - - - - - - - Error Flag to Indicate Undervoltage Fault Up to 150m A Regulator Output Low Quiescent Current Low Dropout Voltage: VDROP=165m V at 150m A High Output Accuracy: ±1% Good Ripple Rejection Ability: 75d B at 100Hz and IOUT=100µA Tight Load and Line Regulation Low Temperature Coefficient Over Current Protection Thermal Protection Reverse-battery Protection Zero Off-mode Current Logic-controlled Enable Applications - Cellular Phones - Cordless Phones .. - Wireless municators - PDAs / Palmtops - Consumer Electronics SOT-23-5 Figure 1. Package Type of AP2203 Mar. 2006 Rev. 1. 0 1 BCD Semiconductor Manufacturing Limited Preliminary Datasheet 150m A RF ULDO REGULATOR WITH ERROR FLAG Pin Configuration AP2203 K Package (SOT-23-5) VIN GND EN 1 2 3 VOUT FLAG Figure 2. Pin Configuration of AP2203 (Top View) Pin Description Pin Number 1 2 3 4 5 Pin Name VIN GND EN FLAG VOUT Input voltage Ground Enable input: CMOS or TTL patible input. Logic high=enable, logic low=shutdown Error flag (Output pin): Open-collector output. Active low indicates an output undervoltage condition Regulated output voltage Function Mar. 2006 Rev. 1. 0 2 BCD Semiconductor Manufacturing Limited Preliminary Datasheet 150m A RF...