| FEATURES Ultra Low Dropout 0.23V(typical) @ 2A Output Current for 1.2V Output Voltage Low ESR Output Capacitor (Multi-layer Chip Capacitors (MLCC)) Applicable EN Pull-low for APE8903BMP-A EN Pull-high for APE8903BMP-B Fast Transient Response Adjustable Output Voltage by External Resistors Power-On-Reset Monitoring on Both VCNTL and VIN Pins Internal Soft-Start Under-Voltage Protection Current-Limit and Thermal Shutdown Protection Power-OK Output with a Delay Time SO-8 with Exposed Pad Pb-Free Package Halogen Free Product DESCRIPTION The APE8903B series is a 3A ultra low dropout linear regulator. This product is specifically designed to provide well supply voltage for front-side-bus termination on motherboards and NB applications. The IC needs two supply voltages, a control voltage for the circuitry and a main supply voltage for power conversion, to reduce power dissipation and provide extremely low dropout. The APE8903B series integrates many functions. A Power-On-Reset (POR) circuit monitors both supply voltages to prevent wrong operations. A thermal shutdown and current limit functions protect the device against thermal and current over-loads. A POK indicates the output status with time delay which is set internally. It can control other converter for power sequence. The APE8903B series can be enabled by other power system. Pulling and holding the EN pin below 0.4V shuts off the output. The APE8903B series is available in ESOP-8 package which features small size as SO-8 and an Exposed Pad to reduce the junction-to-case resistance, being applicable in 2~3W applications |
