AP2203

Preliminary Datasheet 150mA RF ULDO REGULATOR WITH ERROR FLAG General Description The AP2203 is a 150mA ULDO regulator, which provides ultra low dropout voltage (typically 165mV at 150mA), very low quiescent current (1µA maximum) in shutdown mode and excellent power supply ripple rejection (PSRR 75dB 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 compatible 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. AP2203 Features · · · · · · · · · · · · · Error Flag to Indicate Undervoltage Fault Up to 150mA Regulator Output Low Quiescent Current Low Dropout Voltage: VDROP=165mV at 150mA High Output Accuracy: ±1% Good Ripple Rejection Ability: 75dB 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 www.DataSheet4U.com · Wireless Communicators · PDAs / Palmtops · Consumer Electronics SOT-23-5 Figure 1. Package Type of AP2203 Mar. 2006 Rev. 1. 0 1 BCD Semiconductor Manufacturing Limited Pre...