|
BQ25890_16 Datasheet, PDF (1/69 Pages) Texas Instruments – Adjustable Voltage USB On-the-Go Boost Mode | |||
|
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
bq25890, bq25892
SLUSC86B â MARCH 2015 â REVISED MAY 2016
bq25890/2 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 to 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 and 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
⢠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 14 V for Wide Range of Adapters
â Auto Detect USB SDP, CDP, DCP, and Non-
Standard Adapters (bq25890)
⢠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
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 bq25890, bq25892 are 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)
bq25890
bq25892
WQFN (24)
4.00mm x 4.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
USB
Host
Input
3.9V±14V at 3A
OTG
5V at 2.4A
VBUS
I2C Bus
SW
SYS
BAT
QON
bq2589x REGN
Host Control
TS
SYS 3.5V±4.5V
Ichg = 5A
Optional
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.
|
▷ |