40V/2.6μA/200mA，Ultra-Low-Iq, Low Dropout LDO
SE85XX
General Description
Features
Ultra Low Quiescent Current: 2.6μA(Typ.)
Wide Operating Voltage: V
OUT
+1V to 35V
High output current: ≥200mA
System startup with no overshoot
Short circuit protection is designed with no
overshoot
UVLO 1.8V
Low Dropout Voltage
High Accuracy Output Voltage: ±1%
Excellent power / load transient response
Low temperature coefficient: ±100ppm/℃
Thermal and Short-Circuit Protection
SOT-89 and SOT-23 package
Customer Pin Assignments are available
SE85XX series is designed for power-sensitive
applications. It includes a precision and high
voltage input stage, an ultra-low-power bias current
branch, and results in a ultra-low-power and
low-dropout linear regulator.
The SE85XX operates from an input voltage of
V
OUT
+1V to 35V, consumes only 2.6μA of quiescent
current, and offers 1% initial accuracy and low dropout
voltage, 300mV typical at 100mA.
SE85XX has 1.8V，2.5V，3.0V，3.3V，3.6V，
4.0V，4.2V，5.0V fixed voltage versions.
Other features include short-circuit protection
and thermal shutdown.
Applications
Battery-powered Smoke sensor
Smoke sensor
Microcontrollers
Household appliances and instruments
Application Diagram
Rev1.0
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1
40V/2.6μA/200mA，Ultra-Low-Iq, Low Dropout LDO
SE85XX
Pin Configuration
(Customer pin assignments are available)
Absolute Maximum Rating
Symbol
V
IN
V
OUT
T
A
T
STG
T
J
T
LEAD
JA
P
D
Parameter
Input Supply Voltage
Output Voltage
Operating Temperature
Storage Temperature
Maximum Junction Temperature
Lead Temperature (Soldering) 10 seconds
Thermal Resistance, Junction-to-Ambient
Power Consumption
Value
40
6
-40----105
-40---150
150
260
165(SOT89)
230(SOT23)
750 (SOT89)
250 (SOT23)
Units
V
°C
℃/W
mW
Ordering Information
Rev1.0
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 2
40V/2.6μA/200mA，Ultra-Low-Iq, Low Dropout LDO
SE85XX
Operating Rating
Parameter
Operating Temperature
Storage Temperature
Lead Temperature (Soldering) 10 seconds
Value
-20℃½85
-40℃½125
260±5
Units
℃
℃
℃
Block Diagram
Electrical Characteristics
（V
IN
=V
OUT
+ 1V
；
Tj=25℃ unless otherwise noted.）
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
IN
V
OUT
I
Q
I
OUT
Input Supply Voltage
Output Voltage Accuracy
Quiescent Current
Output Current
1.8
I
OUT
=10mA
-1%
-2%
2.6
200
I
OUT
=10mA
ΔV
OUT
= - V
OUT
*2%
I
OUT
=100mA
ΔV
OUT
= - V
OUT
*2%
I
OUT
=200mA
ΔV
OUT
= - V
OUT
*2%
250
30
300
600
40
0.2
36
1%
2%
6.0
V
V
V
μA
mA
mV
mV
mV
mV
%/V
V
DROP
Dropout Voltage
V
LR
V
SR
Rev1.0
Load Regulation
Line Regulation
1mA ≤ I
OUT
≤ 100mA
I
OUT
=1mA,
V
IN
=(V
OUT
+1V) to 30V
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3
40V/2.6μA/200mA，Ultra-Low-Iq, Low Dropout LDO
I
LIMIT
T
SHDN
TC
VOUT
Current Limit
Thermal Protection
Output Voltage
Temperature Coefficient
SE85XX
mA
℃
ppm/℃
V
IN
=(V
OUT
+1V) to 30V
R
LOAD
=V
OUT
/1A
I
OUT
=10mA
-40℃≤T
AMB
≤100℃
450
125
±100
Typical Performance Characteristics
V
OUT
：3.3V
V
OUT
：5.0V
V
OUT
：3.3V
V
OUT
：3.3V
Rev1.0
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 4
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