AP2138

ULTRA LOW QUIESCENT CURRENT CMOS LDO General Description Features Data Sheet AP2138/2139 The AP2138/2139 series are CMOS-based positive voltage regulator ICs. Each of these ICs consists of a voltage reference, an error amplifier, a resistor network for setting output voltage and a current limit circuit for current protection. The difference between AP2138 and AP2139 is the AP2139 has an enable circuit with a quick discharge function. These ICs feature high output voltage accuracy, extremely low quiescent current and low dropout voltage which make them ideal for use in various power sources for portable applications. The AP2138/2139 series have 1.2V, 1.4V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V and 4.0V fixed output voltage versions. The AP2138 series is available in SOT-23-3 and SOT89 packages, AP2139 series is available in SOT-23-5 package. · Ultra-low Quiescent Current: 1.0μA Typical · Output Voltages: 1.2V, 1.4V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V and 4.0V · High Output Voltage Accuracy: ±2% · Output Current: 250mA · Low Dropout Voltage: 25mV Typical at IOUT=10mA and VOUT=3V 200mV Typical at IOUT=100mA and VOUT=3V · Line Regulation: 6mV Typical · Load Regulation: 25mV Typical · Low Output Voltage Temperature Coefficient: ±100ppm/oC · Low Standby Current: 0.1μA Typical (AP2139) · Active Quick Output Discharge (AP2139) · Logic-controlled Enable (AP2139) Applications · Battery Powered Equipment · Reference Voltage Sources · Cameras, Video Cameras · Portable AV Sy...