BQ76925 - 用于 3 至 6 节锂离子电池的模拟前端

BQ76925是TI德州仪器公司的一款电池监控,保护及认证解决方案产品，BQ76925是用于 3 至 6 节锂离子电池的模拟前端，本站介绍了BQ76925的封装应用图解、特点和优点、功能等，并给出了与BQ76925相关的TI元器件型号供参考。

BQ76925 - 用于 3 至 6 节锂离子电池的模拟前端 - 电池监控,保护及认证解决方案 - 电池管理产品 - 德州仪器

产品特性

Analog Interface for Host Cell Measurement
- Cell Input MUX, Level Shifter, and Scaler
- 1.5-/ 3.0-V Low-Drift, Calibrated Reference Allows Accurate Analog-to-Digital Conversions
Analog Interface for Host Current Measurement
- Variable Gain Current Sense Amplifier Capable of Operation with 1-mΩ Sense Resistor
Switchable Thermistor Bias Output for Host Temperature Measurements
Overcurrent Comparator With Dynamically Adjustable Threshold
- Alerts Host to Potential Overcurrent Faults
- Wakes up Host on Load Connect
Integrated Cell Balancing FETs
- Individual Host Control
- 50 mA per Cell Balancing Current
Supports Cell Sense-Line Open Wire Detection
Integrated 3.3-V Regulator for Powering Micro-Controller and/or LEDs
I2C Interface for Host Communications
- Optional Packet CRC for Robust Operation
Supply Voltage Range From 4.2 to 26.4 V
Low Power Consumption
- 40 µA Typical in Normal Mode
- 1.5 µA Maximum in Sleep Mode
20-Pin TSSOP or 24-Pin VQFN Package

产品应用

Primary Protection in Li-Ion Battery Packs
- Cordless Power Tools
- Light Electric Vehicles (E-Bike, Scooter, etc.)
- UPS Systems
- Medical Equipment
- Portable Test Equipment

产品说明

The bq76925 host-controlled analog front end (AFE) is part of a complete pack monitoring, balancing, and protection system for 3-, 4-, 5-, or 6-series cell Li-Ion and Li-Polymer batteries. The bq76925 device allows a Host controller to monitor individual cell voltages, pack current and temperature easily. The Host may use this information to determine unsafe or faulty operating conditions such as overvoltage, under- voltage, overtemperature, overcurrent, cell imbalance, state of charge, and state of health conditions.

Cell input voltages are level-shifted, multiplexed, scaled, and output for measurement by a Host ADC. A dedicated pin provides a low-drift calibrated reference voltage to enable accurate measurements.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq76925	TSSOP (20)	4.00 mm × 4.00 mm
bq76925	VQFN (24)	6.50 mm × 4.40 mm

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