The OM70201WV is an ultra-compact, low-cost, system-side/pack-side, fuel gauging system IC for Lithium-ion (Li+) based batteries suitable for portable wearable devices.
The OM70201WV includes a low-power 16-bits Sigma-Delta ADC, a precision reference voltage and built-in NTC bias circuits. It continuously monitors battery voltage, current and temperature parameters. It can continuously monitor battery voltage, current, and temperature, and calculate the state of charge (SOC) of the battery through a patented SOC algorithm, accurately estimating the remaining battery capacity. The OM70201WV also counts the charging and discharging cycles of the battery and includes a battery health status estimation function.
The OM70201WV provides flexible interrupt selection for users to timely grasp the status of the battery. Interrupt sources include changes in battery level, low battery level, high temperature, and low temperature.
The OM70201WV uses a 2-wire I2C compatible serial interface and can operate in standard mode or fast mode, support interface voltage from 1.2V to 5V.
The IC is available in a tiny 1.538×1.538mm lead-free 9-ball WLCSP package.
• System-side or Pack-side Fuel Gauging
• Low-side or High-side Current Sensing
• 1% Maximum Total SOC Measurement Error
• 16-bit Sigma-Delta ADC for Cell Voltage, Current and NTC Measurement
• Configurable Interrupt for Battery SOC Change, High/Low Battery Temperature
• Patented SOC Algorithm, No Offset Accumulation during Life Time
• No Full-to-Empty Battery Calibration Necessary
• SOH and Cycle Count
• External Temperature Sensor Supported
• Low Power Dissipation
- Sleep Mode 0.45μA (25℃)
- Active Mode 5μA (25℃)
• General I2C Control Interface, 1.2V~5V Operation.
• Tiny, Lead free WLCSP package
• Wearable Devices
• Tablet PCs
• Handheld and Portable Applications
• Lithium-ion or Lithium Polymer Battery Pack
FUNCTION
A low power voltage and current type fuel gauging system IC for Lithium-ion (Li+) based batteries
PACKAGE
WLCSP-9, 1.538×1.538mm
