ISL94202

Standalone 3 to 8 Cell Li-Ion Battery Pack Monitor

Product Status: Mass Production

OVERVIEW

The ISL94202 is a battery pack monitor IC that supports from three to eight series connected cells. It provides complete battery monitoring and pack control. The ISL94202 provides automatic shutdown and recovery from out-of-bounds conditions and automatically controls pack cell balancing.


The ISL94202 is highly configurable as a stand-alone unit, but can be used with an optional external Microcontroller (MCU), which communicates to the ISL94202 through an I2C interface.

The ISL94202 supersedes the ISL94203 for all future designs, as the ISL94202 operates in both parallel and series power FET configurations.

KEY FEATURES

  • Eight cell voltage monitors support Li-ion CoO2, Li-ion Mn2O4, Li-ion FePO4, and other chemistries
  • Stand-alone pack control - no MCU needed
  • Multiple voltage protection options (each programmable to 4.8V; 12-bit digital value) and selectable overcurrent protection levels
  • Programmable detection/recovery times for overvoltage, undervoltage, overcurrent, and short-circuit conditions
  • Configuration/calibration registers maintained in EEPROM
  • Open Wire battery connection detection
  • Integrated charge/discharge FET drive circuitry with built-in charge pump supports high-side N-channel FETs
  • Cell balancing uses external FETs with internal state machine or an optional external MCU
  • Enters low power states after periods of inactivity
    • Charge or discharge current detection resumes normal scan rates
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    APPLICATIONS

  • Power tools
  • Battery back-up systems
  • Light electric vehicles
  • Portable equipment
  • Energy storage systems
  • Solar farms
  • Medical equipment
  • Hospital beds
  • Monitoring equipment
  • Ventilators

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL94202
Basic Information
生产状态
Mass Production
#串联电池
3 to 8 Cells
通信接口
I2C
实施
Pack
电量平衡
External (Built-in FET Drivers)
电池组电压
4V to 36V
绝对电池电压测量精度
15mV Max (0°C to 60°C)
集成充电/放电FET驱动
Yes
集成电流感应/检测
Yes (High Side Measurement)
集成温度检测
Yes
IS (最大值)
370 µA
SHDN ICC
(max) 1 µA
集成调节器输出/基准输出
2.5V / 1.8V
特殊功能
*Stand Alone operation or with External µC
*Provides Diagnostic Info
*Robust Hot Plug Performance
*Fast Scan Rate of 100µs/Cell
封装
48Ld TQFN (6x6mm)
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +85

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