600mA CMOS Ultra LDO Voltage Regulator with EN
SE5220
General Description
Features
Typical 150mV Dropout Voltage at 500mA.
Fast Enable Turn-On Time of 20μs (Typ.)
Excellent Line and Load Regulation.
High Accuracy Output Voltage of 2%.
Ultra-Low Ground Current at 78μA(Typ)
Disable Current Less than 1μA (Typ.)
Thermal and Over-Current Protection.
Short Circuit Protection
Standard SOT23-5 Package.
The SE5220 series of adjustable output ultra
low dropout linear regulators are designed for
portable
voltage.
battery
powered
applications,
which
require low power consumption and low dropout
Each device contains a bandgap voltage
reference, an error amplifier, a PMOS power
transistor, and current limit and temperature limit
protection circuits. The output voltage can be
adjusted via the external resistor network, based
on the internal reference voltage of 0.8V
The SE5220 is designed to work with low cost
electrolytic and ceramic capacitors and requires a
minimum output capacitor of 1μF.
Applications
USB removable devices
MPEG4 devices
Wireless LAN’s
Hand-Held Instrumentation.
Portable DVD players
Digital camera
Typical Application
Vin
VIN
VOUT
R1
Cout
10uF
Vout
SE5220
Enable
Cin
10uF
ENABLE ADJ
Gnd
R2
Vout= 0.8 * ( 1+ R1/R2) Volts
Figure 2. ADJ Vout Typical Application Circuit（Minimum Cout 1uF）
Rev1.1
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., • www.seawardinc.com • Page
2
9/7/2012
600mA CMOS Ultra LDO Voltage Regulator with EN
SE5220
Pin Configuration
Top View
ENABLE
VIN
VOUT
ADJ
1
2
3
4
8
7
6
5
NC
NC
NC
GND
GND
PSOP8 ( Exposed Pad)
Pin Description
NO.
1
2
3
4
5
Pin Name
ENABLE
VIN
VOUT
ADJ
GND
Pin Function Description
Enable Pin
Input Voltage
Output Voltage
Adjust Pin
Ground
Functional Block Diagram
Ordering Information
Part Number
SE5220-LF-ADJ
SE5220-HF-XXV
SE5220-HF-ADJ
Marking Information
5220X
5220X
SE5220-ADJ
YYWW-HF
Package
SOT23-5
SOT23-5
PSOP8
Remarks
Adjustable output voltage
X means Production batch.
Fixed output voltage 1.0~4.3V
X means Production batch.
Adjustable output voltage
YYWW means Production batch.
Rev1.1
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., • www.seawardinc.com • Page
3
9/7/2012
600mA CMOS Ultra LDO Voltage Regulator with EN
SE5220
Absolute Maximum Ratings
(1)
Parameter
Input Voltage
Enable Voltage Range
Output Voltage Range
Power Dissipation
Symbol
V
IN
V
EN
V
OUT
P
D
Θ
JA
Value
6.5
-0.3 to V
IN
-0.3 to V
IN
SOT23-5：0.7
PSOP8：1.45
SOT23-5: 150
PSOP8：30
SOT23-5: 33
PSOP8：20
260
Units
V
V
V
W
Thermal Resistance, Junction-to-Ambient
Θ
JC
Lead Temperature (Soldering, 5 sec.)
Junction Temperature Range
Storage Temperature Range
T
J
T
S
°C/W
°C
°C
°C
-40 to +150
-40 to +150
Test condition for all packages: Device mounted on FR-4 substrate PC board, 1oz copper, with minimum recommended pad layout.
MIL-STD-202G 210F
Recommended Operating Conditions
(2)
Parameter
Supply Input Voltage Range
Junction Temperature Range
Ambient Temperature
Symbol
V
IN
T
J
T
A
Value
2~6
-40 to +125
-40 to 85
Units
V
°C
°C
Electrical Characteristics
（
V
IN
= Vout+1.0V); C
IN
= 10μF; C
OUT
= 10μF; I
OUT
= 10mA; T
J
= 25°C; unless otherwise noted
）
Symbol
V
OUT
V
REF
ΔV
OUT
/V
OUT
ΔV
OUT
/V
OUT
ΔV
OUT
/ΔT
Parameter
Output Voltage Accuracy
ADJ Pin Voltage
Line Regulation
Load Regulation
(5)
Output Voltage
Temperature Coefficient
SE5220 – ADJ
V
IN
= (V
OUT
+ 0.7)V to 6V
V
IN
= (V
OUT
+ 0.7)V
I
OUT
= 10mA to 500mA
Note 4
Conditions
Min
-2%
-2%
--
--
--
0.8
0.05
0.12
0.1
Typ
Max
2%
2%
0.2
1
--
Unit
V
V
%/V
%
mV/°C
Rev1.1
Preliminary and all contents are subject to change without prior notice.
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4
9/7/2012
600mA CMOS Ultra LDO Voltage Regulator with EN
V
IN
– V
OUT
T
PROTECTION
I
Q
Dropout Voltage (6)
Thermal Protection
Quiescent Current
Vout<2.5V,Iout = 600mA
Vout≥2.5V,Iout = 600mA
Thermal Protect Threshold
Hysterisys
V
EN
= V
IN
; I
OUT
= 0mA
V
EN
= 0.4V; I
OUT
= 0mA
Voltage Increasing, Output
V
TH(EN)
Enable Input Threshold
Voltage
Current Limit
Short Circuit Current
Ripple Rejection
V
IN
=Vout+1V; Vout< 0.4V
f =100HzVIN=4.5V
Vp-p=1V, ILoad=50mA
Turns On, Logic High
Voltage Decreasing, Output
Turns Off, Logic Low
I
LIMIT
I
short
PSRR
--
--
1.6
--
1
--
--
--
--
306
240
150
30
78
0.1
--
--
1.7
0.32
53.6
100
1
--
0.4
--
--
550
350
--
mV
°C
μA
V
V
A
A
dB
SE5220
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
Note 3:
The maximum allowable power dissipation at any T
A
(ambient temperature) is calculated using: P
D(MAX)
= (T
J(MAX)
– T
A
)/Θ
JA
.
for details
Note 4:
Output voltage temperature coefficient is the worst case voltage change divided by the total
temperature range.
Note 5:
Regulation is measured at constant junction temperature using low duty cycle pulse testing.
are tested for load regulation in the load range from 10mA to 600mA.
to heating effects are covered by the thermal regulation specification.
Note 6:
Dropout voltage is defined as the input to output differential at which the output voltage drops 2%
below its nominal value measured at 1V differential. Input voltage above minimum Vin=2V.
Parts
Changes in output voltage due
Exceeding the maximum allowable power dissipation will result in excessive die
See “Thermal Consideration” section
temperature, and the regulator will go into thermal shutdown.
Rev1.1
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., • www.seawardinc.com • Page
5
9/7/2012
600mA CMOS Ultra LDO Voltage Regulator with EN
SE5220
Typical Performance Characteristics
Rev1.1
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., • www.seawardinc.com • Page
6
9/7/2012
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