Shanghai Guangyu Ruixin Microelectronics Co., Ltd. specializes in the design, development and sales of semiconductor overvoltage protection devices and integrated circuits. It is one of the domestic suppliers that masters the core technology of semiconductor overvoltage protection devices and integrated circuits. They are used in communication systems, portable products, lithium battery protection, power system overvoltage protection, LED drive, etc.
Single-cell protection of Lithium-ion/Lithium polymer batteries
Features
Product Name: Single cell protection for Lithium-ion/Lithium polymer batteries
Product model: SEI8101
Product Description:
The SEI8100/8101 series are 1-cell lithium-ion/lithium polymer rechargeable battery protection ICs with high-accuracy voltage detection circuit and delay circuit. It is a 6-pin package for 1-celllithium-ion/lithium polymer rechargeable battery cells protections including over-charge detection, over-discharge detection, over-discharge current detection, over-charge current detection, load short circuiting detection and charger insertion detection functions. The OC output controls an external N-MOSFET to enable or disable the battery charging path and the OD output controls an external N-MOSFET to enable or disable the battery discharging path to protect the battery cell from damage and incident occurring. The ICs has a built-in timer circuit for protection discrimination without external delay capacitor. In SOT23-6L package, the DP pin is used for speeding up the delay circuit timer intesting.
Remark: The SEI8100 series are used in battery cells with 0 V un-chargeable and SEI8101 series are used in battery cells with 0 V chargeable.
product features:
1.) High accuracy voltage detection
Over-charge detection voltage
Over-charge release voltage
Over-discharge detection voltage
Over-discharge release voltage
Discharge over-current 1 detection voltage
Load short circuit detection voltage
2.) 29 V high voltage tolerate pin for VM and OC in charger connection
3.) Build-in delay time circuit for over-charge (700 ms), over-discharge (90 ms) and discharge over-current protection (6 ms) without external capacitor
4.) 2-step discharge over-current detection including discharge over-current and load short circuiting detection
5.) With power-down function
6.) Includes the charge over-current detection with normal operation and charger detection in over-discharge condition
7.) Low current consumption
Normal operation: 3.0 μA in typical, 6.0 μA in maximum
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