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
Description
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.
Parameters
| Attributes | Value |
|---|---|
| Cells Supported (#) | 3 - 8 |
| Pack Voltage (Op) | 4 - 36 |
| Cell Balancing FETs | External (Built-in Drivers) |
| Integrated Current Sense/Detection | High Side |
| Charge/Discharge FET Control | Yes |
| Charge/Discharge FET Arrangement | Both |
| Charge/Discharge FET Location | High Side |
| IS (mA) | 0.348 |
| Sleep/Reset Mode Current (µA) | 13 |
| Stand Alone Capable | State Machine |
| Internal ADC (bits) | 14 |
| Daisy Chain | No |
| GPI+GPIOs (#) | 2 |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +85°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TQFN | 6.0 x 6.0 x 0.75 | 48 | 0.4 |
Application Block Diagrams
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
 | Cordless Leaf Blower 20V cordless leaf blower features adjustable speeds, a smart motor, a rechargeable battery, and a versatile design. |
 | Cordless Vacuum Cleaner BLDC motors power efficient, versatile tools from vacuums to fans, featuring smart control and long life. |
 | Robot Vacuum Cleaner This smart robot vacuum features environment mapping, anti-drop, obstacle detection, auto-recharge, app control. |
 | Smart Travel Bag AI-powered smart travel bag with object detection and hands-free convenience. |
 | Cordless BLDC Hand Blender Lightweight, versatile cordless hand blender with fast charging, BLDC motor, and multi-speed control. |
Additional Applications
- Power tools
- Battery back-up systems
- Light electric vehicles
- Portable equipment
- Energy storage systems
- Solar farms
- Medical equipment
- Hospital beds
- Monitoring equipment
- Ventilators