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SS6821 Datasheet Preview

SS6821 Datasheet

Single-cell Lithium-lon Battery Protection IC

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SS6821
Single-Cell Lithium-Ion Battery Protection IC
FEATURES
Reduction in board size with miniature SOT-23-5
package and few external components.
Ultra-low quiescent current of 7µA (VCC=3.5V).
Ultra-low power-down current of 0.6 µ A (VCC=2.2V).
Precision over-charge protection voltage
4.35V ± 50mV for the SS6821A
4.30V ± 50mV for the SS6821B
4.25V ± 50mV for the SS6821C
4.20V ± 50mV for the SS6821D
Built-in delay-time circuits for over-charge, over-
discharge, and over-current protection.
Load detection function during overcharge mode.
Two detection levels for over-current protection.
APPLICATIONS
Protection IC for single-cell Lithium-Ion battery
packs.
DESCRIPTION
The SS6821 battery protection IC is
designed to protect a lithium-ion battery from
damage or reduced lifetime due to over-charge,
over-discharge, and/or over-current in single-cell
lithium-ion battery powered systems, such as
cellular phones. The ultra-small package and
few external components make the SS6821
ideal for integration into the limited space of
of a battery pack.
The accurate ±50mV over-charging detection
voltage ensures safe and full-utilization
charging. Four different specification values for
over-charge protection voltage are provided for
various protection requirements. The very low
standby current drains little current from the cell
while in storage.
TYPICAL APPLICATION CIRCUIT
FUSE
BATT+
M1
SSM9926
R1 5 VCC
100 C1
0.1µF
2 GND
3 OD
4
CS
OC 1
SS6821
R3
10M
M2 SSM9926
Protection Circuit for Single-Cell Lithium-Ion Battery
R2
100K
BATT-
12/6/2004 Rev.2.02
www.SiliconStandard.com
1 of 10




Silicon

SS6821 Datasheet Preview

SS6821 Datasheet

Single-cell Lithium-lon Battery Protection IC

No Preview Available !

SS6821
ORDERING INFORMATION
SS6821-XCXXX
Packing:
TR: Tape and reel
PIN CONFIGURATION
SOT-23-5 VCC
TOP VIEW 5
CS
4
Package type
V: SOT-23-5
Overcharge protection:
A: 4.35V
B: 4.30V
C: 4.25V
D: 4.20V
Example: SS6821-A CVTR
à 4.35V version, in SOT-23-5 package
shipped in tape and reel
12 3
OC GND OD
ABSOLUTE MAXIMUM RATINGS
Supply Voltage....................................………………….................................................... 18V
DC Voltage Applied on other Pins ...............………………………….............................. 18V
Charger Voltage ..............……………………….……………………................................ 14V
Operating Temperature Range .....................................……………….............. -40°C~85°C
Storage Temperature Range .........................…………………..................... - 65°C~125°C
TEST CIRCUIT
VCC
R1
100
VOD
ICC
5
C1
0.1µF
2
VCC
GND
3 OD
4
CS
1
OC
SS6821
R2
100K
R3
10M
VCS
VOC
12/6/2004 Rev.2.02
www.SiliconStandard.com
2 of 10


Part Number SS6821
Description Single-cell Lithium-lon Battery Protection IC
Maker Silicon
Total Page 10 Pages
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