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Lithium Battery Management IC

SIT2122-Lithium battery protection IC

SIT2122-Lithium battery protection IC

2 series lithium battery protection series

SIT2122 built-in high-precision voltage detection circuit and delay circuit is a protection IC for lithium ion rechargeable batteries / lithium polymer rechargeable batteries.
SIT2122 is suitable for the protection of overcharge, overdischarge, charge overcurrent, and discharge overcurrent of 2-cell lithium-ion/lithium polymer battery packs used in series.

Hotline:138 2870 3807

Description

1 Overview
SIT2122 built-in high-precision voltage detection circuit and delay circuit, is
For the protection of lithium ion rechargeable batteries/lithium polymer rechargeable batteries
IC.
SIT2122 is suitable for 2 series lithium ion/lithium polymer batteries
Group overcharge, overdischarge, charge overcurrent and discharge overcurrent protection.

2. Features
High voltage device: Absolute maximum rating 32V
Built-in high-precision voltage detection circuit:
SIT2122 Overcharge detection voltage 3..65±0.025V
Overdischarge detection voltage 2.0±0.08V
Discharge overcurrent 1 detection voltage 0.20±0.020V
3-stage discharge overcurrent detection (discharge overcurrent 1, discharge overcurrent 2 and negative
Load short circuit detection)
Charge overcurrent detection function
Built-in delay capacitor, no need for external capacitor
With charging function to 0V battery
Low current consumption:
Typical value during operation: 7μA
Maximum value during sleep: 0.1μA
Package form: SOT-23-6

3. Application
Lithium-ion rechargeable battery pack
Lithium polymer rechargeable battery pack
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