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Switch-mode Single Cell Li+ Battery Charger with OTG Boost, Voltage Mode Fuel Gauge and LDO
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The STBCFG01 is a switching battery charger integrating the necessary functions to charge single cell Li-Ion batteries, monitor the battery charge and generate 5 V to supply USB OTG bus powered devices.

The IC also integrates the LDO regulator to support system boot in dead battery conditions.

The battery charger features a smart input current limit: the maximum input current can be selected through I²C and if the input voltage drops below a programmable threshold, the input current is reduced even if the selected maximum current limit has not been reached yet. The dynamic input current limit can be disabled.

An automatic input pre-bias load makes the device suitable for applications using voltage sources with a minimum external load for the right regulation.

The STBCFG01 also integrates a voltage mode fuel gauge to provide the state of charge evaluation without the current sensing resistor.

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Errata Sheet
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Key Features

  • High efficiency switching battery charger
  • 2 MHz or 3 MHz switching frequency
  • 1.2 A max. charging current
  • 20 V tolerant input with OVP
  • Programmable input current limitation and dynamic input current limit
  • Battery overvoltage protection
  • Auto-recharge
  • Integrated current sensing resistor
  • USB compatible
  • Voltage mode fuel gauge
  • External sensing resistor is not needed
  • Battery swap detection through ID resistor
  • Low battery voltage and low SOC programmable alarms
  • 50 mA LDO for system boot in dead battery condition
  • USB OTG VBUSgeneration (500 mA)
  • USB overvoltage protection
  • Programmable battery overcurrent protection
  • Automatic 60 mA input pre-bias
  • I²C compatible control interface
  • Interrupt output pin
  • Flip Chip package, 25 bumps (2.3 x 2.2 mm)

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS10380: Switch mode single cell Li+ battery charger with OTG boost, voltage mode fuel gauge and LDO
2.0 1,657 KB
DB2151: Switch-mode single Cell Li+ battery charger with OTG boost, voltage mode fuel gauge and LDO
1.0 235 KB

Presentations & Training Material


Description Version Size
Power management for handheld and portable applications
734 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-ISB033V1 Evaluation board for STBCFG01 single-cell Li+ battery charger with OTG boost, voltage mode fuel gauge and 200 mA LDO

Publications and Collaterals

Selection Guides

Description Version Size
Linear and Switching Voltage Regulators Selection Guide
384 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STBCFG01JRActiveChip Scale Package 0.4mm pitchTape And Reel_Free SamplesDistributor reported inventory date: 2016-02-06
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA57005000
Farnell Element14Order NowEUROPE49871

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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