BQ25910 Datasheet, PDF (1/8 Pages) Texas Instruments – I2C Controlled 6-A Three-Level Switch Mode, Single-Cell Parallel Battery Charger for High Input Voltage

TI Information — Selective Disclosure
bq25910
SLUSD57 – SEPTEMBER 2017
bq25910 I²C Controlled 6-A Three-Level Switch Mode,
Single-Cell Parallel Battery Charger for High Input Voltage
1 Features
•1 High Efficiency 750-kHz Synchronous Switch
Mode Three-Level Buck Parallel Charger
– Reduced ripple to support low profile inductor
– 94% (TBD) Charge Efficiency at 3 A from 9-V
input
– Optimized for High Voltage Adapter
(9 V to 12 V)
• Single Input to Support USB Input and Adjustable
High Voltage Adapters
– Support 3.9-V to 14-V Input Voltage Range
with 20-V Absolute Maximum Input Voltage
Rating
• Flexible Autonomous and I²C Mode for Optimal
System Performance
• High Integration Includes all MOSFETs, Current
Sensing and Loop Compensation
– Lossless charge current sensing without sense
resistor
• <10-µA (TBD) Low Battery Leakage Current
during Stand-By Mode
• High Accuracy
– ±0.5% (TBD) Charge Voltage Regulation
– ±10% (TBD) Charge current Regulation
– ±10% (TBD) Input Current Regulation
– Remote Differential Battery Sensing
• Safety
– Thermal Regulation and Thermal Shutdown
– Input UVLO and Overvoltage Protection
– Battery OVP
– Input Dynamic Power Management (DPM)
– Charging Safety Timer
• Available in 36-Ball WCSP Package
3 Description
The bq25910 is an integrated three-level switch-mode
parallel battery charge management device for single
cell Li-ion and Li-polymer batteries. Utilization of the
three-level converter reduces solution footprint and
volume while maintaining highest switch-mode
operation efficiency. Low impedance power path
reduces battery charging time. The device supports
fast charging with high input voltage for a wide range
of portable devices. The solution integrates reverse-
blocking FET (Q_BLK), and four switching FETs (Q_HSA,
Q_HSB, Q_LSB, Q_LSA). The I²C serial interface with
charging and system settings makes the device a
truly flexible solution.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq25910
DSBGA (36)
2.41 mm x 2.44 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
USB
VBUS
SW
I2C Bus
Host
Control
BTST
SYS
BAT
Master
VBUS CFLY+
Host
I2C Bus
Host
Control
SW
CFLY-
BATP
BATN
bq2591x
ICHG
+
2 Applications
• Smart Phone and Tablet PC
• Portable Internet Devices and Accessory
Copyright © 2017, 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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.