APL5910 Datasheet, PDF (1/16 Pages) Anpec Electronics Coropration – 1A, Ultra Low Dropout (0.12V Typical) Linear Regulator

APL5910
1A, Ultra Low Dropout (0.12V Typical) Linear Regulator
Features
General Description
• 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)
Applications
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.
Simplified Application Circuit
• Motherboards, VGA Cards
• Notebook PCs
• Add-in Cards
Pin Configuration
POK 1
EN 2
VIN 3
VCNTL 4
8 GND
7 FB
6 VOUT
5 NC
POK
EN
Enable
VCNTL
POK
VIN
VOUT
APL5910
EN
FB
GND
V_CNTL
V_IN
V_OUT
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.
1
Rev. A.2 - Aug., 2008
www.anpec.com.tw