STBCFG01 Datasheet, PDF (1/37 Pages) STMicroelectronics – Integrated current sensing resistor

STBCFG01
Switch mode single cell Li+ battery charger with OTG boost,
voltage mode fuel gauge and LDO
Datasheet - production data
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 VBUS generation (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)
Applications
 Mobile phones
 Smart phones
Description
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.
April 2016
DocID026474 Rev 3
This is information on a product in full production.
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