ISL94203

3-to-8 Cell Li-ion Battery Pack Monitor

OVERVIEW

The ISL94203 is a Li-ion battery monitor IC that supports from 3 to 8 series connected cells. It provides full battery monitoring and pack control. The ISL94203 provides automatic shutdown and recovery from out of bounds conditions and automatically controls pack cell balancing.

The ISL94203 is highly configurable as a stand-alone unit, but can be used with an external microcontroller, which communicates to the IC through an I2 C interface.

KEY FEATURES

  • Eight cell voltage monitors support Li-ion CoO2, Li-ion Mn2O4 and Li-ion FePO4 chemistries
  • Stand-alone pack control - no microcontroller 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 battery connect 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 external microcontroller
  • Enters low power states after periods of inactivity. Charge or discharge current detection resumes normal scan rates

PARAMETRICS

Parameters
ISL94203
Basic Information
Production Status
Mass Production (Not recommended for new designs)
直列セル数
3 to 8 Cells
通信インタフェース
I2C
実装
Pack
セルバランシング
External (Built-in FET Drivers)
パック電圧
4V to 36V
絶対セル電圧測定精度
15mV Max (0°C to 60°C)
統合充放電FETドライブ
Yes
統合電流検出
Yes (High Side Measurement)
集積温度検出
Yes
IS (max)
370 µA
SHDN ICC
(max) 1 µA
集積レギュレータ出力/リファレンス出力
2.5V / 1.8V
特殊機能
*Stand Alone operation or with External µC
*Provides Diagnostic Info
*Robust Hot Plug Performance
*Fast Scan Rate of 100µs/Cell
パッケージ
48Ld TQFN (6x6mm)
認定レベル
Standard
CANサンプル
YES
温度範囲
-40 to +85

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