SE5221ADLG-LF SEAWARD [Seaward Electronics Inc.], SE5221ADLG-LF Datasheet
SE5221ADLG-LF
Manufacturer Part Number
SE5221ADLG-LF
Description
Dual 200mA CMOS LDO Voltage Regulator
Manufacturer
SEAWARD [Seaward Electronics Inc.]
Datasheet
1.SE5221ADLG-LF.pdf
(7 pages)
Chip enable
Revision 9/4/2008
Application Diagram
Pin Configuration
Description
regulator supplying up to 200mA at each channel.
The output voltages are selectable between
2.8V/3.3V
Channel-2 with 3% accuracy.
as the pass devices to regulate the output voltages.
The IC consumes 120μA supply current when both
channels are turned on, and is nearly independent
of load currents and dropout conditions. The EN1
and EN2 pins allows for individual channel controls.
When both outputs are shut down simultaneously,
the chip will be turned off and consumes nearly zero
operating current which is suitable for battery-power
devices. Other features include a current limiting,
and over temperature protection.
SE5221 is a dual-channel low dropout
The SE5221 uses internal PMOS transistors
2.2uF
for
3
1
EN2
VOUT2
Channel-1
Preliminary and all contents are subject to change without prior notice
GND
2
© Seaward Electronics Inc., 2007. • www.seawardinc.com • Page 1
VOUT1
EN1
VIN
and
6
4
5
2.2uF
1.3V/1.8V
2.2uF
LDO Voltage Regulator
Chip enable
Dual 200mA CMOS
(Preliminary)
for
Features
Application
Ordering Information
SE5221 _ _ L G
Typical 256mV Dropout Voltage at 200mA
Up to 200mA Output Current (Each Channel)
Low Ground Current at 120uA (Typ.)
Dual Shutdown Pins to Control Each Output
Current Limiting and Thermal Protection
Two LDOs in SOT-23-6L Package
100% Lead (Pb)-Free
Cellular Phones.
Laptop, Notebook, and Palmtop Computers.
Battery-Powered Equipments.
Hand-held Equipments.
Wireless LAN Devices.
G: V
L: SOT23-6L
D: V
G: V
A: V
B: V
Pin (1=>6):
out2
OUT2
OUT2
OUT1
OUT1
/GND/EN2/EN1/V
= 1.8V
= 1.3V
= 3.3V
= 2.8V
SE5221
IN
/V
OUT1
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