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 (#) | - |
| Pack Voltage (Op) | - |
| 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 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
|
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