ISL94201
Multi-Cell Li-ion Battery Pack Analog Front-End
Key Features
- Four Battery-Backed Software Controlled Flags
- 10% Accurate 3.3V Voltage Regulator (Minimum 25mA Out With External NPN Transistor Having Current Gain of 70)
- Monitored Cell Voltage Output Stable In 100µs
- Simple I2C Host Interface
- Sleep Operation With Programmable Negative Edge or Positive Edge Wake-Up
- <10µA Sleep Mode
- Pb-Free (RoHS compliant)
Description
The ISL94201 is an analog front end for a microcontroller in a multi-cell Li-ion battery pack. The ISL94201 supports battery pack configurations consisting of 4-cells to 7-cells in series and 1 or more cells in parallel. The ISL94201 provides an internal 3.3V voltage regulator, and cell voltage monitor level shifters.
Using an internal analog multiplexer the ISL94201 provides monitoring of each cell voltage plus internal and external temperature by a separate microcontroller with an A/D converter. Software on this microcontroller implements all battery pack control functionality.
Applications
- Power Tools
- Battery Backup Systems
- E-Bikes
- Portable Test Equipment
- Medical Systems
- Hybrid Vehicle
- Military Electronics
