300mA Low Power Low Noise
LDO CMOS Voltage Regulator
Description
The SE5509B series of fixed output low
dropout linear regulators are designed for portable
battery powered applications, which require low
power consumption, low noise environment, 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 SE5509B has been designed to be used
with low cost capacitors and requires a minimum
output capacitor of 1.0μF. The output voltages
range from 1.3V to 4.4V in 100mV increments.
Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0,
and 3.3V. The SE5509B is characterized for
operation
from
-40
o
C
to
125
o
C,
junction
temperarure.
SE5509B
Features
Typical 110mV Dropout Voltage at 150mA.
Fast Enable Turn-On Time of 20μs (Typ.)
Excellent Line and Load Regulation.
High Accuracy Output Voltage of 3%.
Ultra-Low Ground Current at 35μA (Typ.)
Disable Current Less than 0.01μA (Typ.)
Over Current and thermal Protection.
No Reverse Current.
ESD rating is 2.5KV(HBM).
Standard SOT-23-5L and TSOP-5 Package.
100% Lead (Pb)-Free
Application
USB removable devices
MPEG4 devices
Wireless LAN’s
Hand-Held Instrumentation.
Portable DVD players
Digital camera
Pin Configuration
Ordering Information
SE5509B
_
__
Pin (1=>5):
G: V
IN
/GND/EN/BYPASS/V
OUT
Package:
L: SOT-23-5L / TSOP-5
Output Voltage: A: V
OUT
= 3.3V
B: V
OUT
= 2.8V
C: V
OUT
= 2.5V
D: V
OUT
= 1.8V
E: V
OUT
= 1.5V
F: V
OUT
= 3.0V
Block Diagram
Revision 5/4/2009
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2006. • www.seawardinc.com.cn • Page 1
SEAWARD [ Seaward Electronics Inc. ]
