500mA CMOS LDO Voltage Regulator
(Preliminary)
SE5218
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 specified.
Min
1.470
1.764
2.450
2.744
2.940
3.234
--
--
--
Typ
1.5
1.8
2.5
2.8
3.0
3.3
1.0
1.0
1.5
Max
1.530
1.836
2.550
2.856
3.060
3.366
--
--
%
--
Unit
Symbol
Parameter
V
OUT
Output Voltage
Accuracy
Conditions
SE5218 – 1.5(V
IN
=3.3V)
SE5218 – 1.8(V
IN
=3.3V)
SE5218 – 2.5
SE5218 – 2.8
SE5218 – 3.0
SE5218 – 3.3
V
IN
= (V
OUT
+1)V to 5.5V
V
IN
= (V
OUT
+0.8)V
or 2.5V
I
OUT
= 10mA to
250mA
I
OUT
= 10mA to
500mA
V
ΔV
OUT
Line Regulation
Load
Regulation
(5)
Output Voltage
Temperature
Coefficient
Dropout
Voltage
(6)
Thermal
Protection
Ripple
Rejection
Quiescent
Current
Enable Input
Threshold
Voltage
Current Limit
%/V
ΔV
OUT
ΔV
OUT
/ΔT
Note 4
I
OUT
= 10mA
I
OUT
= 150mA
I
OUT
= 250mA
I
OUT
= 400mA
Thermal Protection Temperature
Protection Hysterisys
f = 120 Hz
V
EN
= 0.4V
V
EN
= V
IN
Voltage Increasing, Output Turns On,
Logic High
Voltage Decreasing, Output Turns Off,
Logic Low
--
0.025
15
175
320
600
--
mV/°C
V
IN
– V
OUT
mV
T
PROTECTION
PSRR
I
Q
--
--
--
--
--
1.6
--
--
150
20
59
0.3
65
--
--
800
--
--
--
--
--
--
°C
dB
μA
V
TH(EN)
V
0.4
--
mA
I
LIMIT
Revision
12/5/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2005. • www.seawardinc.com.cn • Page 3
SEAWARD [ Seaward Electronics Inc. ]
