BQ77307中文资料适用于 2 至 7 节串联电池、具有高精度电池电压测量功能的低功耗保护器数据手册TI规格书

特性 Features

Primary or secondary voltage, current, and temperature protection for 2-series to 7-series cells with an autonomous recovery option

Voltage protection:

Cell overvoltage (COV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy

Cell undervoltage (CUV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy



Current protection:

Short circuit in discharge (SCD): 10 mV–500 mV, varying steps

Overcurrent in charge (OCC): 3 mV–123 mV, 2-mV steps

Overcurrent in discharge 1 and 2 (OCD1 and OCD2): 4 mV–200 mV, 2-mV steps



Temperature protection using external NTC thermistor:

Overtemperature in charge and discharge (OTC and OTD)

Undertemperature in charge and discharge (UTC and UTD)

Internal die overtemperature



Integrated low-side drivers for NFET protection with an optional autonomous recovery

Low power operation:

NORMAL mode, both FETs enabled: 8 µA

NORMAL mode, FETs disabled: 5 µA

SHUTDOWN Mode: < 1 µA



High voltage tolerance of 45 V on cell connect and select additional pins

Integrated one-time-programmable (OTP) memory for device settings, programmed by TI

Programmable interrupt for host processor, status information available through I 2C

400-kHz I 2C serial communications with optional CRC support

Programmable LDO for external system usage

20-pin QFN 3.5 mm × 3.5 mm × 0.9 mm (RGR) package