300mA Low Power Low Noise
LDO CMOS Voltage Regulator
Ordering/Marking Information
Package
SOT-23-5L / TSOP-5
(Top View)
VIN
GND
ENABLE
1
2
3
4
BYPASS
5
VOUT
SE5509B
Ordering Information
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
SE5509BALG-LF
SE5509BBLG-LF
SE5509BCLG-LF
SE5509BDLG-LF
SE5509BELG-LF
SE5509BFLG-LF
509ALz
509BLz
509CLz
509DLz
509ELz
509FLz
Marking Information
The last character is the batch number.
A dot on top right corner is for lead-free
process.
LF: lead free.
Absolute Maximum Rating
(1)
Parameter
Input Voltage
Enable Voltage
Output Voltage
Power Dissipation
Output Short Circuit Duration
Thermal Resistance, Junction-to-Ambient
Lead Temperature (Soldering, 5 sec.)
Junction Temperature
Storage Temperature
T
J
T
S
Θ
JA
Symbol
V
IN
V
EN
V
OUT
P
D
Value
6
-0.3 to V
IN
-0.3 to 4.6
Internally Limited
(3)
Infinite
230
260
0 to +150
-40 to +150
°C/W
°C
°C
°C
Units
V
V
V
Operating Rating
(2)
Parameter
Supply Input Voltage Range
Junction Temperature Range
Symbol
V
IN
T
J
Value
5.5
0 to +125
Units
V
°C
Electrical Characteristics
V
IN
= 5V; V
EN
=V
IN
; C
IN
= 2.2μF; C
OUT
= 2.2μF（
Electrolytic
capacitor
）;
I
OUT
= 10mA; T
J
= 25°C; unless otherwise noted
Conditions
Min
1.455
1.746
2.425
2.716
2.910
3.201
--
Typ
1.5
1.8
2.5
2.8
3.0
3.3
0.2
Max
1.545
1.854
2.575
2.884
3.090
3.399
--
Unit
Symbol
Parameter
V
OUT
Output Voltage
Accuracy
SE5509B – 1.5 (V
IN
=1.8V)
SE5509B – 1.8 (V
IN
=3.3V)
SE5509B – 2.5
SE5509B– 2.8
SE5509B – 3.0
SE5509B – 3.3
V
IN
= (V
OUT
+ 0.8)V to 5.5V
V
ΔV
OUT
Line Regulation
%/V
Revision 5/4/2009
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2006. • www.seawardinc.com.cn • Page 2
SEAWARD [ Seaward Electronics Inc. ]
