500mA CMOS LDO Voltage Regulator
(Preliminary)
Description
The SE5218 series of fixed output low dropout
linear regulators are designed for portable battery
powered applications, which require low noise
environment, fast enable response time, 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 SE5218 has been designed to be used with
low cost capacitors and requires a minimum output
capacitor of 1.0μF.
Standard voltage versions are
1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.
SE5218
Features
Typical 175mV Dropout Voltage at 150mA.
Fast Enable Turn-On Time of 20μs (Typ.)
Excellent Line and Load Regulation.
High Accuracy Output Voltage of 2%.
Ultra-Low Ground Current at 65μA (Typ.)
Disable Current Less than 0.3μA (Typ.)
Thermal Protection.
Standard SOT-23-5L Packages.
Applications
USB removable devices
MPEG4 devices
Wireless LAN’s
Hand-Held Instrumentation.
Portable DVD players
Digital camera
Pin Configuration
Application Diagram
Revision
12/5/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 1
SEAWARD [ Seaward Electronics Inc. ]
