REV. 1.1
FS8821-DS-11_EN
SEP. 2006
Datasheet
FS8821
Ultra-Low Quiescent Current Voltage Detector
FS8821
Fortune Semiconductor Corporation
富晶電子股½有限公司
28F., No.27, Sec. 2, Zhongzheng E. Rd.,
Danshui Town, Taipei County 251, Taiwan
Tel.：886-2-28094742
Fax：886-2-28094874
www.ic-fortune.com
This manual contains new product information.
Fortune Semiconductor Corporation
reserves the rights to
modify the product specification without further notice. No liability is assumed by
Fortune Semiconductor
Corporation
as a result of the use of this product. No rights under any patent accompany the sale of the
product.
Rev. 1.1
2/11
FS8821
1.
General Description
4.
Ordering Information
The FS8821 series are highly accurate, ultra-low
current consumption voltage detectors, developed
using CMOS process. Two output forms N-channel
open-drain and CMOS output are available. The
device is ideal for battery- powered portable devices
which require low current consumption.
The FS8821 consists of a comparator, a voltage
reference unit, a resistor divider, an output driver,
and a hysteresis circuit. The detection voltage is
fixed internally with
±2.0%
accuracy by advanced
trimming technology.
The devices are available in SOT-23, SOT-89, and
TO-92 packages.
FS8821x-xx x x
Package
C : SOT-23
E : TO-92
L : SOT-89
Pin Out
1.OUT 2.GND 3.VDD
1.OUT 2.VDD 3.GND
1.OUT 2.VDD 3.GND
Temperature Range
C : Commercial Standard
P : Commercial Standard, Lead(Pb) Free and
Phosphorous(P) Free Package
Output Voltage
16 : 1.6V
17 : 1.7V
:
:
60 : 6.0V
Output Type
N : N-ch open drain
C : CMOS
2.
Features
Ultra-low quiescent current 1.0μA Typ.
High accuracy of detection voltage
±2%
Hysteresis width %5 Typ.
Detection Voltage 1.6V to 6.0V (0.1V Step)
Operating voltage range 1.5V to 6.0V
N-ch open drain and CMOS outputs
TO-92, SOT-89 and SOT-23 packages
3.
Applications
5.
Pin Configurations
Battery checker for battery-powered equipments
Reset for CPUs and microcomputers
Power monitor for portable devices and
communication devices
Power failure detection
Rev. 1.1
3/11
FS8821
6.
Package Marking Information
Package Marking Information
SOT-23
EX：FS8821N-50CC
.....
TO-92 & SOT-89
EX：FS8821N-25CL
FS8821N
W
21 50
...
Top Points: Lot No.
First 3 Bottom Points: Year
w : week, A~Z & A ~ Z
25CLxxxx
xxxx：Date Code
EX：FS8821C-50PC
.....
EX：FS8821C-25PL
FS8821C
25PLxxxx
xxxx：Date Code
P: Pb/P Free
21 50
.
....
W
Top Points: Lot No.
First 3 Bottom Points: Year
4th Bottom Point: CMOS output
w : week, A~Z & A ~ Z
A dot after marking : Pb/P Free
7.
Pin Description
Symbol
VDD
OUT
GND
Description
Power supply and voltage detection input pin
Voltage detection output pin
Ground pin
8.
Functional Block Diagram
Rev. 1.1
4/11
FS8821
9.
Typical Application Circuit
10. Absolute Maximum Ratings
Input voltage VDD to GND ------------------------------------------------------------------------------------------------- 6V
Output Voltage, CMOS ------------------------------------------------------------------------------------- GND ~ VDD+0.3V
Output Voltage, N-Channel ------------------------------------------------------------------------------------------ GND ~ 6V
Output current ----------------------------------------------------------------------------------------------------------------- 50mA
Continuous power dissipation, P
D
(ΔT= T
J
-T
A
= 100°C)
SOT-23
----------------------------------------------------------------------------------------------------------------------------------------
0.31W
SOT-89
---------------------------------------------------------------------------------------------------------------------------------------
0.55W
----------------------------------------------------------------------------------------------------------------------------------------
0.55W
TO-92
Storage temperature range, T
STG
---------------------------------------------------------------------- -55°C to +150°C
Operating junction temperature range ---------------------------------------------------------------- -40°C to +85°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.
11. Electrical Characteristics
(T
A
=25℃, unless otherwise noted.)
Symbol
VDD
VDET
VHYS
IQ
Parameter
Operating Voltage
Detection Voltage
Hysteresis Width
Quiescent Current
VDD=5.0V
VDD = 2V
IOUT
Output Current
N-Channel
Output
VDD = 3V
VDD = 5V
ILEAK
Leakage Current
Temperature Coefficient
Response time
N-Channel, VDD=OUT=6V
-40˚C < TA < +85˚C
100
3
5
7
Test Conditions
Min
1.5
VDET*
0.98
VDET*
0.03
VDET
VDET*
0.05
1.0
7
10
13
0.1
350
200
Typ
Max
6.0
VDET*
1.02
VDET*
0.08
3.0
Unit
V
V
V
µA
mA
mA
mA
µA
ppm/˚C
µS
Rev. 1.1
5/11
微控制器 MCU
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