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SIT8997B

6/7 节锂电池保护芯片

产品详细信息

特性
说明

·High Accuracy Voltage Detection 

 Charge over voltage protection  

 VOV3.2V - 4.4V(Step: 25mV) 

 Charge over voltage protection   accuracy±15mV 

 Release hysteresis voltage0 - 400mV 

 Discharge under voltage Protection  

  VUV2.0V - 3.6V (Step:   100mV) 

 Discharge under voltage protection accuracy ±50mV

 Discharge under voltage protection release  hysteresis voltage0 - 1.6V 

·Discharge Over Current Detection

 Discharge over current 1 protection voltage  VDOC10.025V - 0.400V (Step: 12.5mV) 

 Discharge over   current 1 protection voltage  accuracy±10mV 

 Discharge over current 1 protection voltage  VDOC22×VDOC1 (Step: 25mV) 

 Discharge   over current 2 protection voltage  accuracy±15mV 

·Short Protection

 Short protection voltage  

 VSC4×VDOC1 (Step: 100mV)  Short protection voltage accuracy±15mV 

·Charge Over Current Protection

 Charge over current protection voltage VCOC10mV - 50mV (Step: 10mV) 

 Charge over current     protection voltage accuracy: 10mV±5mV20mV - 50mV±10mV 

·Open Wire Detection 

·Battery Cell Balance

 Balance operation voltage threshold3.2V - 4.375V (25mV step) 

 Balance operation voltage accuracy±25mV 

·Temperature Protection

 Charging high temperature protection50°C  Protection accuracy±4°C(Max.) 

 Charging low temperature   protection-5°C  Protection accuracy±4°C (Max.) 

 Discharging high temperature protection70°C  Protection accuracy±4°C (Max.) 

·External capacitor to set over discharge voltage  protection delay time, over discharge current 1  protection delay time and over discharge   current  2 protection delay time 

·Fixed over charge voltage, over charge current  protection delay time, short protection delay time  and temperature protection delay time  

·Low Power Consumption 

 Normal operation mode current20μA (Max) 

 Sleep mode current3μA (Max) 

·Operation Temperature Range-40°C ~ 85°C 

·Operation Voltage Range3V ~ 40V 

·Package20-pin TSSOP20 

·SEL pin to configure 6 cells or 7 cells application




SIT8997 integrates high accuracy voltage detection  circuits and time delay circuits to monitor battery cell  voltage, current and temperature and to protect Li-Ion  and Li-Polymer battery package safety. SIT8997 has  function with charging from 0V which can increase  battery pack service life. SIT8997 has three operation mode: normal mode,  sleep mode and shutdown mode. SIT8997 enters  sleep mode to reduce system power consumption  when any battery cell is in low battery status.

SIT8997B
意大利贵宾会
SIT8997B
意大利贵宾会
SIT8997B
SIT8997B

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