Li Ion Smart Battery Manager

The PowerSmart PS334 Li Ion Smart Battery Managers are advanced Smart Battery IC products from PowerSmart, incorporating the accurate capacity monitoring from the PS330 and PS331 plus six (6) programmable output pins. The PS334’s programmable outputs can be used as LED outputs to display State-Of-Charge (SOC), direct control of external charge circuitry, or to provide additional levels of safety in Li-Ion packs. As a result, PowerSmart’s PS334 eliminates the need for additional components normally required for charge control or safety.

Using the PS334, OEMs can achieve the highest smart battery data accuracy in a complete battery management solution at an attractive cost. The PS334 delivers both space and total system component cost savings which is especially useful for applications such as PDAs, digital cameras, and notebook computers

• Performs all major Li Ion battery management functions
• Six independently programmable output pins can be assigned as SOC LED outputs, direct charge control, or additional levels of safety control
• High accuracy measurement of charge / discharge current, voltage, and temperature with on-chip 14-bit integrating A/D
• Precise capacity reporting for all lithium based chemistries using PowerSmart patented algorithms and 3D battery cell models
• 3D models and “learned” parameters stored in external EEPROM; fully field reprogrammable via SMBus interface

• industry standard Smart Battery Data Specification V1.1a - SMBus V1.1 with PEC / CRC-8 communication with system host