FS8853A
300mA LDO Linear Regulator with ON/OFF Control
General Description
The FS8853A is a low-dropout linear regulator
with ON/OFF control. The device operates in the
input voltage range from +2.5V to +9.0V and
delivers 300mA output current.
The high-accuracy (±35mV) output voltage is
preset at an internally trimmed voltage 2.5V,
2.85V or 3.3V. Other output voltages can be
mask-optioned from 1.3V to 5.0V with 100mV
increment, except FS8853A-29Cx which has
2.85V output voltage.
The FS8853A consists of a 1.25V reference
compare amplifier, a P-channel pass transistor,
and an enable/disable logic circuit. Other
features include short-circuit protection and
thermal shutdown protection. The FS8853
devices are available in SOT-89-5 and
SOT-23-5 packages.
Ordering Information
FS8853A-xx x x
Package
A : SOT-23-5
B : SOT-23-5
C : SOT-23-5
D : SOT-89-5
E : SOT-89-5
F : SOT-89-5
1.IN
4.NC
1.EN
4.OUT
1.GND
4.NC
1.OUT
4.EN
1.EN
4.OUT
1.GND
4.NC
Pin Out
2.GND
5.OUT
2.GND
5.IN
2.IN
5.EN
2.GND
5.IN
2.GND
5.IN
2.IN
5.EN
3.EN
3.NC
3.OUT
3.NC
3.NC
3.OUT
Temperature Range
C : Commercial Standard
P : Commercial Standard, Lead(Pb) Free
and Phosphorous(P) Free Package
Output Voltage
15 : 1.5V
16 : 1.6V
17 : 1.7V
18 : 1.8V
19 : 1.9V
20 : 2.0V
21 : 2.1V
22 : 2.2V
23 : 2.3V
24 : 2.4V
25 : 2.5V
26 : 2.6V
27 : 2.7V
28 : 2.8V
29 : 2.85V
30 : 3.0V
31 : 3.1V
32 : 3.2V
33 : 3.3V
34 : 3.4V
35 : 3.5V
36 : 3.6V
37 : 3.7V
38 : 3.8V
39 : 3.9V
40 : 4.0V
41 : 4.1V
42 : 4.2V
43 : 4.3V
44 : 4.4V
45 : 4.5V
46 : 4.6V
47 : 4.7V
48 : 4.8V
49 : 4.9V
50 : 5.0V
Features
Low dropout voltage 400mV at 300mA
(Typ.)
Low 40µA current consumption (Typ.)
at Vin=5V
High accuracy output voltage: ±35mV
Preset at 2.5V, 2.85V, 3.3V
Mask options from 1.5V to 5.0V
Small output capacitor
Output current limit
Short circuit current limit protection
Thermal overload shutdown protection
ON/OFF Control Function
SOT-89-5 and SOT-23-5 Package
Note :
Output Voltage is preset at
2.5V, 2.85V or 3.3V, and
standard package type is ‘A’
type. Mask option output
voltages and other package
types are available by special
order only.
Applications
Battery-Powered Devices
Personal Communication Devices
Home Electric/Electronic Appliances
Fortune Semiconductor Corp.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
1/11
TD-0410026
Rev. 1.3
FS8853A
300mA LDO Linear Regulator with ON/OFF Control
Pin Configurations
Part No. Pin 1 Pin 2 Pin 3 Pin 4 Pin 5
FS8853A
-xxxA
IN
GND
GND
IN
EN
NC
OUT
NC
OUT
NC
OUT
IN
EN
1
SOT-23-5
5
4
FS8853A
EN
-xxxB
FS8853A
GND
-xxxC
.....
Axxx
W
....
2
3
Part No. Pin 1 Pin 2 Pin 3 Pin 4 Pin 5
5
SOT-89-5
4
FS8853A
OUT GND
-xxxD
FS8853A
EN
-xxxE
FS8853A
GND
-xxxF
GND
IN
NC
NC
OUT
EN
OUT
NC
IN
IN
EN
FS8853A
xxxxxxxx
1
2
3
Package Marking Information
SOT-23-5
EX：FS8853A-33CA
.....
SOT-89-5
EX：FS8853A-33CD
FS8853A
33CDxxxx
xxxx：Date Code
A33A
...
W
Top Point：Lot No.
Bottom Point：Year
w : week, A~Z & A ~ Z
EX：FS8853A-33PA
.....
EX：FS8853A-33PD
FS8853A
33PDxxxx
xxxx：Date Code
A33A
...
.
W
Top Point：Lot No.
Bottom Point：Year
w : week, A~Z & A ~ Z
A dot after marking : Pb/P Free
Fortune Semiconductor Corp.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
2/11
TD-0410026
Rev. 1.3
FS8853A
300mA LDO Linear Regulator with ON/OFF Control
Pin Description
Part NO.
FS8853A-xxCA
FS8853A-xxCB
FS8853A-xxCC
FS8853A-xxCD
FS8853A-xxCE
FS8853A-xxCF
Symbol
GND
IN
NC
EN
OUT
Ground pin.
Regulator input pin.
No Connection.
Chip enable pin.
Regulator output pin.
Description
IN
is the regulator input pin. Supply voltage can range from 2.5V to 9.0V. Bypass with a 1µF capacitor to
GND.
OUT
is the output voltage pin. Sources up to 300mA. Bypass with a 3.3µF capacitor to GND.
GND
provides the reference for all voltages.
NC
no connection.
EN
is output voltage ON/OFF control pin. EN pin input voltage must be less than the input voltage at IN
pin.
Functional Block Diagram
IN
EN
ON/OFF
Circuit
Current Limit
Shutdown
Logic
Thermal
Protection
OUT
1.25V
Bandgap
Reference
R1
R2
GND
Fortune Semiconductor Corp.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
3/11
TD-0410026
Rev. 1.3
FS8853A
300mA LDO Linear Regulator with ON/OFF Control
Typical Application Circuit
INPUT
2.5V
TO
9.0V
IN
1µF
OUT
3.3µF
GND
FS8853A
OFF
2V
ON
EN
NC
*Note : EN pin input voltage must always
≦
input voltage.
Absolute Maximum Ratings
Input voltage V
IN
to GND -------------------------------------------------------------------------------------------------- 10V
Output current limit, I
(LIMIT)
----------------------------------------------------------------------------------------------- 0.5A
Continuous power dissipation, P
D
(∆T= T
J
-T
A
= 100°C)
SOT-23-5
------------------------------------------------------------------------------------------------------------------------------------------
0.40W
SOT-89-5
------------------------------------------------------------------------------------------------------------------------------------------
0.55W
* The power dissipation values are based on the condition that junction temperature T
J
and ambient
temperature T
A
difference is 100°C.
Junction Temperature, T
J
------------------------------------------------------------------------------------------------ +155°C
Storage temperature range, T
STG
----------------------------------------------------------------------- -55°C to +150°C
Operating junction temperature range ------------------------------------------------------------------ -40°C to +125°C
Lead temperature (soldering, 10sec) --------------------------------------------------------------------------------- 260°C
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only, and function operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
Fortune Semiconductor Corp.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
4/11
TD-0410026
Rev. 1.3
FS8853A
300mA LDO Linear Regulator with ON/OFF Control
Electrical Characteristics
(V
IN
=5V, T
A
=25
℃
, unless otherwise noted.)
Symbol
V
IN
V
OUT
I
MAX
V
DROP
∆V
LINE
∆V
LOAD
I
Q
I
SD
V
IH
V
IL
I
EN
I
SC
PSRR
T
SD
T
HYS
Parameter
Input Voltage
Output Voltage
Output Current (*1)
Dropout Voltage
Line Regulation
Load Regulation
Ground Pin Current
Shutdown Current
EN Pin Input Voltage “H”
EN Pin Input Voltage “L”
EN Pin Leakage Current
Short Current Limit
Ripple Rejection
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
Thermal Resistance
SOT-23-5
SOT-89-5
V
IN
=V
OUT
+1V, F=100Hz,
Vripple=1Vp-p, I
OUT
=30mA
260
60
155
20
250
180
V
IN
=V
OUT
+1V, I
OUT
=30mA
V
OUT
+1V
≦
V
IN
≦
9V
I
OUT
=300mA
V
OUT
+0.5V
≦
V
IN
≦
9V, I
OUT
=30mA
V
IN
=V
OUT
+1V, 10µA
≦
I
OUT
≦
100mA
V
IN
=+5V, ON/OFF Pin=ON, No Load
V
IN
=+9V, ON/OFF Pin=ON, No Load
V
IN
=V
OUT
+1V, EN Pin=OFF, No Load
(see note *2)
(see note *2)
2.0
0.5
0.1
300
Test Conditions
Min
2.5
V
OUT-
0.035
300
400
0.2
0.02
40
60
0.1
480
0.3
0.03
60
100
1.0
Typ
V
OUT
Max
9.0
V
OUT
+
0.035
Unit
V
V
mA
mV
%/V
%/mA
µA
µA
µA
V
V
µA
mA
dB
°C
°C
°C/W
°C/W
θ
JA
Note
：
(*1) Measured using a double sided board with 1” x 2” square inches of copper area connected to the GND
pins for “heat spreading”.
(*2)EN pin input voltage must be always less than or equal to input voltage.
Fortune Semiconductor Corp.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
5/11
TD-0410026
Rev. 1.3
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