SE5220_10 Datasheet, PDF (1/7 Pages) Seaward Electronics Inc. – 1.5A CMOS Ultra LDO Voltage Regulator with EN

SE5220
1.5A CMOS Ultra LDO Voltage Regulator with EN
Description
The SE5220 series of adjustable output ultra
low dropout linear regulators are designed for
portable battery powered applications, which
require low power consumption and low dropout
voltage. Each device contains a bandgap voltage
reference, an error amplifier, a PMOS power
transistor, and current limit and temperature limit
protection circuits. The output voltage can be
adjusted via the external resistor network, based on
the internal reference voltage of 0.8V
The SE5220 is designed to work with low cost
electrolytic and ceramic capacitors and requires a
minimum output capacitor of 10µF.
Pin Configuration
Top View
Features
¾ Typical 150mV Dropout Voltage at 500mA.
¾ Fast Enable Turn-On Time of 20µs (Typ.)
¾ Excellent Line and Load Regulation.
¾ High Accuracy Output Voltage of 2%.
¾ Ultra-Low Ground Current at 150µA (Typ.)
¾ Disable Current Less than 10µA (Typ.)
¾ Thermal and Over-Current Protection.
¾ Short Circuit Protection
¾ Standard PSOP-8 Package.
Application
¾ USB removable devices
¾ MPEG4 devices
¾ Wireless LAN’s
¾ Hand-Held Instrumentation.
¾ Portable DVD players
¾ Digital camera
ENABLE
VIN
VOUT
ADJ
1
8
2
7
GND
3
6
4
5
NC
NC
NC
GND
PSOP8 ( Exposed Pad)
Block Diagram
VIN ^Port
Port _VOUT
Over-
Temperature
10uA
Protection
Short
Circuit
Protection
Over-Current
Protection
ENABLE ^Port
Port
ADJ
Vref=0.8V
Port _GND
Revision 8/6/2010
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2004. • www.seawardinc.com • Page 1