Summit Microelectronics SMB231, SMB232, and SMB233 Li+ Charger ICs

Summit Microelectronics announced the SMB231/2/3 programmable battery charger integrated circuit (IC) family for single-cell Li-Ion, Li-Polymer, and Li-FePO4 battery packs. The Summit chips support USB Battery Charging Revision 1.1, USB 2.0/USB3.0, JEITA Safety, IEEE1725, Chinese USB Charging. The SMB231, SMB232, and SMB233 have an operating temperature range of -30°C to +85°C. The SMB231/2/3 family of battery chargers is available now. The SMB231 and SMB232 are priced at $0.80 and the SMB233 is priced at $0.88 (quantities of 10,000 units).

Summit Microelectronics SMB231/2/3 programmable battery charger integrated circuit (IC) family for single-cell Li-Ion, Li-Polymer, and Li-FePO4 battery packs

Summit SMB231/2/3 Tiny Li+ Charger ICs Features

  • Over 50% smaller compared to similar devices
  • Automatic charger input current adjustment based on wall adapter current limit
  • Automatic power source detection per USB 1.1 charging specification
  • Integrated low-battery voltage detector
  • CurrentPath for dead battery boot-up
  • Supports USB 2.0 and USB 3.0 power specifications
  • Battery thermal monitor with JEITA support
  • Fault status and adapter present indicators
  • +3.6V to +6.2V operating input (+20V protection)
  • Very low reverse leakage and shutdown current
  • I2C programmable (volatile and non-volatile)
  • Fast/pre-charge/termination current
  • Float voltage
  • System voltage
  • Pre-charge/low-battery thresholds
  • Safety timers
  • Built-in safety supports IEEE1725 and JEITA standards
  • Input OV protection to +20V
  • Battery OV/OC protection
  • Trickle charge for deeply-discharged cells
  • Safety timers
  • Digital fault monitors
  • Battery and IC temperature monitor
  • 2.16 x 1.61 CSP and 4 x 4 QFN packaging

More info: Summit Microelectronics