Dual 200mA CMOS
LDO Voltage Regulator
(Preliminary)
Block Diagram
VIN
P5
OCP
OTP
OCP
SE5221
EN2
P3
VREF
EN1
P6
VOUT2
P1
VOUT1
P4
GND
P2
Functional Pin Desciption
Pin No.
1
2
3
4
5
6
Pin Name
VOUT2
GND
EN2
EN1
VIN
VOU1
Pin Function
Channel 2 Output Voltage
Common Ground
Chip Enable (Active High)
Chip Enable (Active High)
Supply Input
Channel 1 Output Voltage
Ordering/Marking Information
Package
Ordering Information
Vout1=3.3V
Vout2=1.8V
Vout1=2.8V
Vout2=1.8V
Vout1=3.3V
Vout2=1.3V
Vout1=2.8V
Vout2=1.3V
SE5221ADLG-LF
SE5221BDLG-LF
SE5221AGLG-LF
SE5221BGLG-LF
21ADLz
21BDLz
21AGLz
21BGLz
Marking Information
The last character is the
batch number.
A dot on top right corner
is for lead-free process.
LF: lead free.
Revision 9/4/2008
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2007. • www.seawardinc.com • Page 2
SEAWARD [ Seaward Electronics Inc. ]
