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APE8973

Advanced Power Electronics
Part Number APE8973
Manufacturer Advanced Power Electronics
Description 3A ULTRA LOW DROPOUT LINEAR REGULATOR
Published May 28, 2016
Detailed Description Advanced Power Electronics Corp. APE8973 3A ULTRA LOW DROPOUT LINEAR REGULATOR FEATURES Ultra Low Dropout - 0.23V(ty...
Datasheet PDF File APE8973 PDF File

APE8973
APE8973

Overview
Advanced Power Electronics Corp.
APE8973 3A ULTRA LOW DROPOUT LINEAR REGULATOR FEATURES Ultra Low Dropout - 0.
23V(typical) at 3A Output Current Low ESR Output Capacitor (Multi-layer Chip Capacitors (MLCC) Applicable 0.
8V Reference Voltage 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 ESOP-8 and DFN 3x3-10L Pb-Free Package.
DESCRIPTION The APE8973 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 APE8973 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 APE8973 can be enabled by other power system.
Pulling and holding the EN pin below 0.
3V shuts off the output.
The APE8973 is available in ESOP-8 and DFN 3x310L packages which features small size as an Exposed Pad to reduce the junction-to-case resistance, being applicable in 2~3W applications.
TYPICAL APPLICATION 1.
Using an Output Capacitor with ESR > 20mΩ VCNTL=5V C1 1uF ON OFF R3 1K U1 VCNTL VIN POK EN VOUT VOUT GND APE8973 FB C2 C3 100uF 0.
1uF VIN=1.
5V Vout=1.
2V/3A R1 C6 1K 12~48nF C4 C5 220uF 0.
1u R2 2K 2.
Using an MLCC as the Output Capacitor ESOP- 8 R3 10K VCNTL=5V U2 VCNTL VIN ON C1 OFF 1uF POK EN VOUT VOUT GND FB APE8973MP VOUT=VFB*(1+R1/R2) VFB = 0.
8V VIN=1.
5V C3 10uF R...


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