FS8841
50mA Ultra-Low Quiescent Current LDO Linear Regulator
General Description
The FS8841 series is a positive voltage regulator
with high accuracy output voltage and ultra-low
quiescent current which is typically 1.0µA. The
device is ideal for battery powered handheld
equipments which require low quiescent current.
The FS8841 contains a bandgap voltage
reference, an error amplifier, a P-channel pass
transistor, and a resistor-divider for setting output
voltage. The output voltage is fixed with high
accuracy by advanced trimming technology.
The FS8841 has been designed to be used with
low cost ceramic capacitors and requires a
minimum output capacitor of 1.0µF. The devices
are available in SOT-23, SOT-89, and TO-92
packages.
Ordering Information
FS8841-xx x x
Package
C : SOT-23
E : TO-92
L : SOT-89
Pin Out
1.GND 2.OUT 3.IN
1.GND 2.IN
3.OUT
1.GND 2.IN
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
Ultra-low quiescent current (1.0µA Typ.)
High accuracy of output voltage
±2%
: V
OUT
≧2.7
V
±2.4%
: V
OUT
≦2.6
V
Low dropout voltage 600mV at 50mA
(Typ.)
Guaranteed 50 mA Output
Wide operating voltage range up to 18V
TO-92, SOT-89 and SOT-23 Packages
Note :
Mask option output types are
available by order only.
Pin Configurations
TO-92
Pin 1
1
2
3
Pin 2
Pin 3
GND
IN
OUT
Applications
Battery powered Equipments
Portable Communication Devices
Precision Voltage References
Hand-Held Electronics
Wireless Communication Systems
(BOTTOM VIEW)
SOT-89
SOT-23
IN
3
.....
1Qxx
w
...
1
2
FS8841
xxxLxxxx
1
GND
2
3
OUT
IN
(TAP)
GND OUT
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
1/10
TD-0407008
Rev. 1.0
FS8841
50mA Ultra-Low Quiescent Current LDO Linear Regulator
Package Marking Information
Package Marking Information
SOT-23
EX：FS8841-50CC
.....
TO-92 & SOT-89
EX：FS8841-36CE
FS8841
36CExxxx
xxxx：Date Code
1Q 50
...
W
Top Point: Lot No.
Bottom Point: Year
w : week, A~Z & A ~ Z
EX：FS8841-50PC
.....
EX：FS8841-36PE
FS8841
36PExxxx
xxxx：Date Code
P: Pb/P Free
1Q 50
...
.
W
Top Point: Lot No.
Bottom Point: Year
w : week, A~Z & A ~ Z
A dot after marking : Pb/P Free
Pin Description
Part NO.
FS8841-xxCC
FS8841-xxCE
FS8841-xxCL
Symbol
GND
IN
OUT
Ground pin
Regulator input pin
Regulator output pin
Description
IN
is the regulator input pin. Supply voltage can range from 2.5V to 18V. Bypass this pin with a 1µF
capacitor to GND.
OUT
is the voltage output pin. Sources up to 50mA. Bypass this pin with a 1µF capacitor to GND.
GND
provides the reference for all voltages.
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
2/10
TD-0407008
Rev. 1.0
FS8841
50mA Ultra-Low Quiescent Current LDO Linear Regulator
Functional Block Diagram
IN
OUT
1.23V
Bandgap
Reference
GND
Typical Application Circuit
FS8841
GND
1
IN
2
OUT
3
V
IN
1µF
V
OUT
1µF
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
3/10
TD-0407008
Rev. 1.0
FS8841
50mA Ultra-Low Quiescent Current LDO Linear Regulator
Absolute Maximum Ratings
Input voltage V
IN
to GND --------------------------------------------------------------------------------------------------- 20V
Maximum output current, I
(MAX)
----------------------------------------------------------------------------------------- 100mA
Continuous power dissipation, P
D
(∆T= T
J
-T
A
= 100°C)
SOT-23
----------------------------------------------------------------------------------------------------------------------------------------
0.31W
SOT-89
---------------------------------------------------------------------------------------------------------------------------------------
0.55W
TO-92
----------------------------------------------------------------------------------------------------------------------------------------
0.55W
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.
Electrical Characteristics
(V
IN
=5V, T
A
=25˚C, unless otherwise noted.)
Symbol
V
IN
V
OUT
Parameter
Input Voltage
Output Voltage
V
IN
=V
OUT
+1.0V, I
OUT
=1mA, V
OUT
≦
2.6V
V
IN
=V
OUT
+1.0V, I
OUT
=1mA, V
OUT
≧
2.7V
V
IN
>V
OUT
+1.0V, V
OUT
≦2.6V
V
IN
>V
OUT
+1.0V, V
OUT
≧2.7V
I
OUT
=0mA, V
IN
=V
OUT
+1.0V
I
OUT
=1mA
V
DROP
∆V
LINE
∆V
LOAD
∆V
OUT/
∆T
A
Dropout Voltage
Line Regulation
Load Regulation
Temperature
Characteristic of
∆V
OUT
V
IN
=5.0V
I
OUT
=10mA
I
OUT
=50mA
V
OUT
+1.0V<V
IN
<12V, I
OUT
=1mA
I
OUT
=0mA to 50mA
V
IN
=5.0V, I
OUT
=10mA,
T
A
= -40˚C ~ 80˚C
Test Conditions
Min
2.5
V
OUT
*
0.976
V
OUT
*
0.98
-2.4
-2.0
50
1.0
16
160
800
0.2
0.01
0.60
2.5
20
200
1000
0.3
0.02
V
OUT
V
OUT
Typ
Max
18
V
OUT
*
1.024
V
OUT
*
1.02
+2.4
+2.0
Unit
V
V
V
%
%
mA
µA
mV
mV
mV
%/V
%/mA
mV/˚C
∆V
OUT
I
MAX
I
Q
Output Voltage Accuracy
Maximum Load Current
Quiescent Current
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
4/10
TD-0407008
Rev. 1.0
FS8841
50mA Ultra-Low Quiescent Current LDO Linear Regulator
Typical Operating Characteristics
(FS8841-36CE tested, C
IN
=1.0µF, C
OUT
=1.0µF, T
A
=+25℃, unless otherwise noted.)
Output Voltage v.s. Input Voltage, IOUT=1mA
4
3.5
3
Vout (V)
2
1.5
1
0.5
0
2
2.5
3
3.5
Vin (V)
4
4.5
5
0
0
5
10
Vin (V)
15
20
Iq (uA)
2.5
2.5
2
1.5
1
0.5
Ground Pin Current v.s. Input Voltage
Output Voltage v.s. Temperture, Vin=10V
3.63
3.62
3.61
Vout (V)
3.6
3.59
3.58
3.57
3.56
-40
-20
0
20
40
60
80
Temperture (℃)
Line Transient, Vin=5~6V, Iout=50mA
Iq (uA)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
Ground Pin Current v.s. Temperture, Vin=10V
-40
-20
0
20
40
60
80
Temperture(℃)
Load Transient, Vin=5V, Iout=1~60mA
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
5/10
TD-0407008
Rev. 1.0
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