|
BQ25890H Datasheet, PDF (1/66 Pages) Texas Instruments – I2C Controlled Single Cell 5-A Fast Charger | |||
|
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
BQ25890H
SLUSCC5 â SEPTEMBER 2016
BQ25890H I2C Controlled Single Cell 5-A Fast Charger with MaxChargeTM Technology for
High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode
1 Features
â¢1 High Efficiency 5-A, 1.5-MHz Switch Mode Buck
Charge
â 93% Charge Efficiency at 2 A and 91% Charge
Efficiency at 3 A Charge Current
â Optimize for High Voltage Input (9 V / 12 V)
â Low Power PFM mode for Light Load
Operations
⢠USB On-the-Go (OTG) with Adjustable Output
from 4.5 V to 5.5 V
â Selectable 500-KHz / 1.5-MHz Boost
Converter with up-to 2.4 A Output
â 93% Boost Efficiency at 5 V at 1 A Output
â Accurate Hiccup Mode Overcurent Protection
â Support down-to 2.5V Battery
â Support PWM only or PFM/PWM control for
Light Load Efficiency
⢠Single Input to Support USB Input and Adjustable
High Voltage Adapters
â Support 3.9-V to 14-V Input Voltage Range
â Input Current Limit (100 mA to 3.25 A with 50-
mA resolution) to Support USB2.0, USB3.0
standard and High Voltage Adapters
â Maximum Power Tracking by Input Voltage
Limit up-to 14V for Wide Range of Adapters
â Auto Detect USB SDP, CDP, DCP, and Non-
standard Adapters
⢠Input Current Optimizer (ICO) to Maximize Input
Power without Overloading Adapters
⢠Resistance Compensation (IRCOMP) from
Charger Output to Cell Terminal
⢠Highest Battery Discharge Efficiency with 11-mΩ
Battery Discharge MOSFET up to 9 A
⢠Integrated ADC for System Monitor
(Voltage, Temperature, Charge Current)
⢠Narrow VDC (NVDC) Power Path Management
â Instant-on Works with No Battery or Deeply
Discharged Battery
â 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
1
Sensing and Loop Compensation
⢠12-µA Low Battery Leakage Current to Support
Ship Mode
⢠High Accuracy
â ±0.5% Charge Voltage Regulation
â ±5% Charge Current Regulation
â ±7.5% Input Current Regulation
⢠Safety
â Battery Temperature Sensing for Charge and
Boost Mode
â Thermal Regulation and Thermal Shutdown
2 Applications
⢠Smart Phone
⢠Tablet PC
⢠Portable Internet Devices
3 Description
The bq25890H is a highly-integrated 5-A switch-mode
battery charge management and system power path
management device for single cell Li-Ion and Li-
polymer battery. The devices support high input
voltage fast 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq25890H
WQFN (24)
4.00mm x 4.00mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
USB
Host
Input
3.9V±14V at 3A
OTG
5V at 2.4A
VBUS
I2C Bus
SW
SYS
BAT
QON
bq25890H REGN
Host Control
TS
SYS 3.5V±4.5V
Ichg = 3A
Optional
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.
|
▷ |