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Table 7: Pin functions
APL5910
a) General Description
The APL5910 is a 1A ultra low dropout linear regulator. The IC needs two supply
voltages, one is a control voltage (VCNTL) for the control circuitry, the other is a main
supply voltage (VIN) for power conversion, to reduce power dissipation and provide
extremely low dropout voltage. The APL5910 integrates many functions. A Power-On- Reset
(POR) circuit monitors both supply voltages on VCNTL and VIN pins to prevent erroneous
operations. The functions of thermal shutdown and current-limit protect the device against
thermal and current over-loads. A POK indicates that the output voltage status with a delay
time set internally. It can control other converter for power sequence. The APL5910 can be
enabled by other power systems. Pulling and holding the EN voltage below 0.4V shuts off the
output.
The APL5910 is available in a SOP-8P package which features small size as SOP-8 and an
Exposed Pad to reduce the junction-to-case resistance to extend power range of applications.
b) Features
• Ultra Low Dropout
- 0.12V (Typical) at 1AOutput Current
• 0.8V Reference Voltage
• High Output Accuracy
- ±1.5%over Line, Load, and Temperature Range
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