APL5910
1A, Ultra Low Dropout (0.12V Typical) Linear Regulator
Features
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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 a control volt-
age (V
CNTL
) for the control circuitry, the other is a main
supply voltage (V
IN
) 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 pro-
tect 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
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Motherboards, VGA Cards
Notebook PCs
Add-in Cards
Simplified Application Circuit
V
CNTL
V
IN
VCNTL
POK
POK
VIN
VOUT
Pin Configuration
POK
EN
VIN
VCNTL
1
2
3
4
8
7
6
5
GND
FB
VOUT
NC
V
OUT
APL5910
EN
EN
GND
FB
Enable
Optional
SOP-8P (Top View)
= Exposed Pad
(connected to ground plane for better heat dissipation)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.2 - Aug., 2008
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
