SMB231, SMB232, SMB233 Battery Chargers | SMB23x Family
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SMB231/2/3
SMB231/2/3

Programmable Linear Battery Chargers with CurrentPath and Automatic USB Power Source Detection.

The SMB23x family is a programmable single-cell lithium-ion/lithium-polymer battery charger for a variety of portable applications. The device provides a simple way to charge Li-ion or LiPolymer batteries via a USB port or an AC port. The SMB23x family can power the system while independently charging the battery. Unlike conventional devices, the SMB23x family’s very small package and high level of configurability simplify design in a wide range of handheld equipment.

Product license agreement

Features

  • World’s smallest programmable 1 A linear charger with CurrentPath
  • Optional automatic power source detection per latest USB charging specification
  • Automatic input current limit
  • Supports JIS8714 and JEITA standards
  • Up to 1 A charge current
  • Up to 1.5 A input current limit
  • 4.35 V to 6.2 V input voltage range (20 V input tolerance)
  • Low reverse leakage current
  • Digital programming of all major parameters via I2C interface and lockable OTP memory
    • Battery voltage set point
    • Pre-charge, fast charge, termination current
    • Pre to fast-charge voltage threshold
    • Temperature limits
    • Charge safety timers
    • Automatic restart threshold
  • Fault/status and adapter present indicators
  • Applications
    • Bluetooth and stereo headsets
    • Noise cancellation headphones
    • MP3 players
    • Wireless handsets
    • Digital still cameras
Specifications
Charging
Maximum Current
1.5 A
Power Management
Maximum Input Voltage
20 V
Package
Type
WLCSP, QFN, WLNSP
Part
Part Number(s)
SMB231, SMB233, SMB232
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