FS8856
550mA LDO Linear Regulator
General Description
The FS8856 is a low-dropout linear regulator
that operations in the input voltage range from
+2.5V to +6.5V and delivers 550mA output
current.
The high-accuracy output voltage is preset at an
internally trimmed voltage 2.5V or 3.3V. Other
output voltages can be mask-optioned from
1.3V to 5.0V with 100mV increment, except
FS8856-29Cx which has 2.85V output voltage.
The FS8856 consist of a 1.25V reference
compare amplifier, and a P-channel pass
transistor. Other features include short-circuit
protection and thermal shutdown protection.
The FS8856 devices are available in TO-92,
SOT-89 and SOT-223 packages.
Ordering Information
FS8856-xx x x
Package
D : TO-92
E : TO-92
F : TO-92
W : TO-92
G : SOT-223
H : SOT-223
J : SOT-223
X : SOT-223
K : SOT-89
L : SOT-89
I : SOT-89
Y : SOT-89
Pin Out
1.IN
1.GND
1.OUT
1.GND
1.IN
1.GND
1.GND
1.OUT
1.IN
1.GND
1.OUT
1.GND
2.GND
2.IN
2.GND
2.OUT
2.GND
2.IN
2.OUT
2.GND
2.GND
2.IN
2.GND
2.OUT
3.OUT
3.OUT
3.IN
3.IN
3.OUT
3.OUT
3.IN
3.IN
3.OUT
3.OUT
3.IN
3.IN
Temperature Range
C : Commercial Standard
P : Commercial Standard, Lead(Pb) Free and
Phosphorous(P) Free Package
Output Voltage
13 : 1.3V
14 : 1.4V
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 750mV at 550mA
(Typ.)
Up to
±35mV
output voltage accuracy
Preset at 2.5V, 3.3V
Mask option from 1.3V to 5.0V
Small output capacitor
Output current limit
Thermal overload shutdown
protection
TO-92, SOT-89 and SOT-223 Packages
Applications
CD-ROM Drivers
DVD-ROM Drivers
Portable Consumer Equipment
Radio Control Systems
Wireless Communication Systems
Note :
Mask option output types are
available by order only.
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
1/13
TD-0405008
Rev. 1.3
FS8856
550mA LDO Linear Regulator
Pin Configurations
Part No. Pin 1 Pin 2 Pin 3
FS8856
-xxxD
IN
GND OUT
IN
OUT
IN
IN
1
TO-92
Part No. Pin 1 Pin 2 Pin 3
3
SOT-89
2
FS8856
-xxxK
IN
GND OUT
IN
OUT
IN
IN
FS8856
xxxxxxxx
1
2
3
FS8856
GND
-xxxE
(BOTTOM VIEW)
FS8856
OUT GND
-xxxF
FS8856
GND OUT
-xxxW
FS8856
GND
-xxxL
FS8856
OUT GND
-xxxI
FS8856
GND OUT
-xxxY
SOT-223
Part No. Pin 1 Pin 2 Pin 3
FS8856
-xxxG
IN
GND OUT
IN
OUT
IN
IN
1
FS8856
GND
-xxxH
FS8856
xxxxxxxx
2
3
FS8856
GND OUT
-xxxJ
FS8856
OUT GND
-xxxX
Package Marking Information
EX：FS8856-33CL
FS8856
33CLxxxx
xxxx：Date Code
EX：FS8856-33PL
FS8856
33PLxxxx
xxxx：Date Code
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
2/13
TD-0405008
Rev. 1.3
FS8856
550mA LDO Linear Regulator
Pin Description
Part NO.
FS8856-xxCD
FS8856-xxCE
FS8856-xxCF
FS8856-xxCW
FS8856-xxCG
FS8856-xxCH
FS8856-xxCJ
FS8856-xxCX
FS8856-xxCK
FS8856-xxCL
FS8856-xxCI
FS8856-xxCY
Symbol
GND
Ground pin.
Description
IN
Regulator input pin.
OUT
Regulator output pin.
IN
is the regulator input pin. Supply voltage can range from 2.5V to 6.5V. Bypass with a 1µF capacitor to
GND.
OUT
is the output voltage pin. Sources up to 550mA. Bypass with a 3.3µF capacitor to GND.
GND
provides the reference for all voltages.
Functional Block Diagram
IN
Current Limit
Shutdown
Logic
Thermal
Protection
OUT
R1
1.25V
Bandgap
Reference
R2
GND
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
3/13
TD-0405008
Rev. 1.3
FS8856
550mA LDO Linear Regulator
Typical Application Circuit
FS8856
Absolute Maximum Ratings
Input voltage V
IN
to GND ----------------------------------------------------------------------------------------------------- 7V
Output current limit, I
(LIMIT)
-------------------------------------------------------------------------------------------------- 0.8A
Continuous power dissipation, P
D
SOT-223
----------------------------------------------------------------------------------------------------------------------------------------
0.65W
SOT-89
----------------------------------------------------------------------------------------------------------------------------------------
0.55W
----------------------------------------------------------------------------------------------------------------------------------------
0.55W
TO-92
* 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 Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
4/13
TD-0405008
Rev. 1.3
FS8856
550mA LDO Linear Regulator
Electrical Characteristics
(T
A
=25℃, unless otherwise noted.)
Symbol
V
IN
V
OUT
∆
V
OUT
I
MAX
I
LIMIT
I
SC
I
Q
Parameter
Input Voltage
Output Voltage
Output Voltage Accuracy
Maximum Load Current
Current Limit
Short-Circuit Current
Ground Pin Current
V
OUT
=0V, V
IN
>V
OUT
+0.9V
I
LOAD
=0mA to 550mA, V
IN
=V
OUT
+0.9V
I
OUT
=100mA
V
DROP
Dropout Voltage
I
OUT
=300mA
I
OUT
=500mA
I
OUT
=550mA
∆V
LINE
∆V
LOAD
PSRR
T
SD
T
HYS
Line Regulation
Load Regulation
Ripple Rejection
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
SOT-223
Thermal Resistance
SOT-89
TO-92
V
OUT
+0.9V<V
IN
<6.5V, I
LOAD
=1mA
I
OUT
=0mA to 550mA
350
65
110
350
650
750
0.2
0.02
75
155
20
155
180
180
V
IN
=V
OUT
+0.9V, I
OUT
=1mA
V
IN
>V
OUT
+0.9V, V
IN
≦6.5V
Test Conditions
Min
2.5
V
OUT
-
0.035
-35
550
0.8
400
90
130
420
800
900
0.3
0.03
Typ
V
OUT
Max
6.5
V
OUT
+
0.035
+35
Unit
V
V
mV
mA
A
mA
µA
mV
mV
mV
mV
%/V
%/mA
dB
°C
°C
°C/W
°C/W
°C/W
θ
JA
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
5/13
TD-0405008
Rev. 1.3
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