Ultra Low Dropout (0.12V Typical) Linear Regulator - ANPEC
Description
APL5910
1A, Ultra Low Dropout (0.
12V Typical) Linear Regulator
Features
• • • • • • • • • • • • • •
Ultra Low Dropout - 0.
12V (Typical) at 1A Output Current 0.
8V Reference Voltage High Output Accuracy - ±1.
5% over Line, Load, and Temperature Range Fast Transient Response Adjustable Output Voltage Power-On-Reset Monitoring on Both VCNTL and VIN Pins Internal Soft-Start Current-Limit and Short Current-Limit Protections Thermal Shutdown with Hysteresis Open-Drain VOUT Voltage Indicator (POK) Low Shutdown Quiescent Current (< 30µA ) Shutdown/Enable Control Function Simple SOP-8P Package with Exposed Pad Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APL5910 is a 1A ultra low dropout linear regulator.
The IC needs two supply voltages, one is the control voltage (VCNTL) for the control circuitry, the other is the main supply voltage (VIN) for power conversion, to reduce power dissipation and provide extremely low dropout voltage.
The APL5910 integrates many functions.
A Power-OnReset (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.
Applications
• • •
Motherboards, VGA Cards Notebook PCs Add-in Cards
Simplified Application Circuit
VCNTL
VIN
POK
Pin Configuration
POK EN VIN VCNTL 1 2 3 4 8 7 6 5 GND FB VOUT NC
POK
VCNTL VIN VOUT VOUT
APL5910
EN
EN
Enable
GND
FB
Optional
SOP-8P (Top View)
= Exposed Pad (connected to ground plane for better heat dis...
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