SE5220 Datasheet, PDF (1/2 Pages) Seaward Electronics Inc. – 1.5A CMOS Ultra LDO Voltage

1.5A CMOS Ultra LDO Voltage
Regulator with EN
SE5220
Description
The SE5220 series of fixed 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
resistors for setting output voltage, and current limit
and temperature limit protection circuits.
The SE5220 has been designed to be used
with low cost capacitors and requires a minimum
output capacitor of 1.0μF. Standard voltage versions
are 3.3V, 3.0V, and adjustable output from 1.25V to
4.5V.
Features
¾ Typical 100mV 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 50μA (Typ.)
¾ Disable Current Less than 0.2μA (Typ.)
¾ Thermal and Over-Current Protection.
¾ Standard SOP-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
Pin Configuration
Block Diagram
(Fixed V_OUT Version)
Revision 12/4/2008
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2004. • www.seawardinc.com.cn • Page 1