Charger ICs integrate USB charging, safety features

Charger ICs integrate USB charging, safety features

The SMB231, SMB232, and SMB233 fourth-generation programmable battery charger ICs target single-cell Li-Ion, Li-polymer, and Li-FePO4 battery packs. The devices integrate feature compatibility with all relevant industry standards: USB Battery Charging Revision 1.1, USB 2.0/USB3.0, JEITA Safety, IEEE1725, Chinese USB Charging, and others.

The battery charger ICs feature automatic matching between the ac/dc adaptor’s current capability and the portable device’s charging requirements. The ICs suit digital still cameras, mobile phones, digital camcorders, wireless headsets, DECT headsets, portable media players GPS navigation equipment, and portable game consoles/controllers. The proprietary CurrentPath functionality allows the system to turn on with a missing or deeply discharged battery. The devices operate with an input range from 3.7 to +6.2-V input and withstand continuous input over-voltage up to 20 V. (Ea/10,000: SMB231 and SMB232, $0.80; SMB233, $0.88 — available now.)

By Paul O’Shea

Summit Microelectronics , Sunnyvale , CA
Information 408-523-1000
http://www.summitmicro.com