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BQ25896 Datasheet(PDF) 1 Page - Texas Instruments

Part # BQ25896
Description  bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ25896 Datasheet(HTML) 1 Page - Texas Instruments

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SYS
BAT
bq25896
Host
Input
3.9V±14V at 3A
USB
OTG
5V at 2A
Ichg = 3A
SYS 3.5V±4.5V
I2C Bus
Host Control
VBUS
SW
TS
QON
Optional
REGN
Product
Folder
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bq25896
SLUSC76A – JULY 2015 – REVISED SEPTEMBER 2015
bq25896 I2C Controlled Single Cell 3-A Fast Charger with MaxChargeTM Technology for
High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode
1 Features
Ship Mode
High Accuracy
1
High Efficiency 3-A, 1.5-MHz Switch Mode Buck
Charge
±0.5% Charge Voltage Regulation
92.5% Charge Efficiency at 2 A and 90.5%
±5% Charge Current Regulation
Charge Efficiency at 3 A Charge Current
±7.5% Input Current Regulation
Optimize for High Voltage Input (9 V / 12 V)
Safety
Low Power PFM mode for Light Load
Battery Temperature Sensing for Charge and
Operations
Boost Mode
USB On-the-Go (OTG) with Adjustable Output
Thermal Regulation and Thermal Shutdown
from 4.5 V to 5.5 V
Selectable 500-KHz / 1.5-MHz Boost
2 Applications
Converter with up-to 2 A Output
Smart Phone
93% Boost Efficiency at 5 V at 1 A Output
Tablet PC
Accurate Hiccup Mode Overcurent Protection
Portable Internet Devices
Support down-to 2.5V Battery
3 Description
Support PWM only or PFM/PWM control for
Light Load Efficiency
The bq25896 is a highly-integrated 3-A switch-mode
battery charge management and system power path
Single Input to Support USB Input and Adjustable
management device for single cell Li-Ion and Li-
High Voltage Adapters
polymer battery. The devices support high input
Support 3.9-V to 14-V Input Voltage Range
voltage fast charging. The low impedance power path
Input Current Limit (100 mA to 3.25 A with 50-
optimizes switch-mode operation efficiency, reduces
battery charging time and extends battery life during
mA resolution) to Support USB2.0, USB3.0
discharging phase. The I2C Serial interface with
standard and High Voltage Adapters
charging and system settings makes the device a
Maximum Power Tracking by Input Voltage
truly flexible solution.
Limit up-to 14V for Wide Range of Adapters
Input Current Optimizer (ICO) to Maximize Input
Device Information(1)
Power without Overloading Adapters
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Resistance Compensation (IRCOMP) from
bq25896
WQFN (24)
4.00mm x 4.00mm
Charger Output to Cell Terminal
(1) For all available packages, see the orderable addendum at
Highest Battery Discharge Efficiency with 11-m
Ω
the end of the datasheet.
Battery Discharge MOSFET up to 9 A
Simplified Schematic
Integrated ADC for System Monitor
(Voltage, Temperature, Charge Current)
Narrow VDC (NVDC) Power Path Management
Instant-on Works with No Battery or Deeply
Discharged Battery
Ideal Diode Operation in Battery Supplement
Mode
BATFET Control to Support Ship Mode, Wake Up,
and Full System Reset
Flexible Autonomous and I2C Mode for Optimal
System Performance
High Integration includes all MOSFETs, Current
Sensing and Loop Compensation
12-µA Low Battery Leakage Current to Support
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.


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