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SS6821DCVTR Datasheet

  • SS6821DCVTR

  • Single-cell Lithium-lon Battery Protection IC

  • 147.54KB

  • 10頁(yè)

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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 7碌A(chǔ) (V
CC
=3.5V).
Ultra-low power-down current of 0.6
碌
A (V
CC
=2.2V).
Precision over-charge protection voltage
4.35V
鹵
50mV for the SS6821A
4.30V
鹵
50mV for the SS6821B
4.25V
鹵
50mV for the SS6821C
4.20V
鹵
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.
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
鹵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.
APPLICATIONS
Protection IC for single-cell Lithium-Ion battery
packs.
TYPICAL APPLICATION CIRCUIT
FUSE
BATT+
R1
BATTERY
100
C1
0.1碌F
5
VCC
CS
4
2
3
GND
OD
OC
1
R3
R2
100K
M1
SSM9926
SS6821
10M
BATT-
M2 SSM9926
Protection Circuit for Single-Cell Lithium-Ion Battery
12/6/2004 Rev.2.02
www.SiliconStandard.com
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