BQ25898C Datasheet, PDF (1/11 Pages) Texas Instruments – Controlled Single Cell 3-A Charger

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bq25898C
SLUSCJ7B – MARCH 2016 – REVISED APRIL 2016
bq25898C I²C Controlled Single Cell 3-A Charger for High Input Voltage in Compact
DSBGA Package
1 Features
•1 Operation as Slave Charger to Provide Fast
Charging in Dual Charger Operation
• Simple Configuration with Minimum BOM
• High Efficiency 3-A, 1.5-MHz Switch Mode Buck
Charge
– 92% Charge Efficiency at 3 A and 94% Charge
Efficiency at 2 A Charge Current
– Optimize for High Voltage Input (9 V / 12 V)
– Low Power PFM mode for Light Load
Operations
• Single Input to Support USB Input and Adjustable
High Voltage Adapters
– Support 3.9-V to 14-V Input Voltage Range
– Input Current Limit (100 mA to 3.25 A with 50-
mA resolution) to Support USB2.0, USB3.0
standard and High Voltage Adapters
– Wide Input Dynamic Power Management
(DPM) Range
• Highest Battery Discharge Efficiency with 5-mΩ
• Default Charge Disabled
• Integrated ADC for System Monitor
(Voltage, Charge Current)
• Flexible Autonomous and I²C Mode for Optimal
System Performance
• Remote Battery Sensing
• High Integration includes all MOSFETs, Current
Sensing and Loop Compensation
• High Accuracy
– ±0.5% Charge Voltage Regulation
– ±5% Charge Current Regulation
– ±7.5% Input Current Regulation
• Safety
– Thermal Regulation and Thermal Shutdown
– Input UVLO/Overvoltage Protection
– Battery OVP
– Safety Timer
2 Applications
• Smart Phone
• Tablet PC
• Portable Internet Devices
3 Description
The bq25898C is a highly-integrated switch-mode
battery charge management and system power path
management device for single cell Li-Ion and Li-
polymer battery. The device supports high input
voltage for charging. The low impedance power path
optimizes switch-mode operation efficiency, reduces
battery charging time and extends battery life during
discharging phase. The I2C serial interface with
charging and system settings makes the device a
truly flexible solution. The bq25898C is available in a
2.8mm x 2.5mm 42-ball DSBGA package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq25898C
DSBGA (42)
2.80 mm x 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
USB
Simplified Schematic
INPUT
3.9V±14V
VBUS
SW
BTST
SYS
Host
I2C BUS
Host Control
BAT
BATSEN
bq25898C
ICHG
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.