BQ24161B_15 Datasheet, PDF (1/52 Pages) Texas Instruments – bq2416xx 2.5A, Dual-Input, Single-Cell Switched-Mode Li-Ion Battery Charger with Power Path Management and I2C Interface

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bq24160, bq24160A, bq24161
bq24161B, bq24163, bq24168
SLUSAO0F – NOVEMBER 2011 – REVISED JULY 2014
bq2416xx 2.5A, Dual-Input, Single-Cell Switched-Mode Li-Ion Battery Charger with Power
Path Management and I²C Interface
1 Features
•1 High-Efficiency Switched-Mode Charger with
Separate Power Path Control
– Instantly Start Up System from a Deeply
Discharged Battery or No Battery
• Compatible with MaxLife™ Technology for Faster
Charging When Used in Conjunction With
bq27530
• Dual Input, Integrated FET Charger for up to 2.5-A
Charging
– 20-V input rating, with Overvoltage Protection
(OVP)
– 6.5 V for USB Input up to 1.5 A
– 10.5 V for IN input (bq24160, bq24160A,
bq24161, bq24163) up to 2.5 A
– 6.5 V for IN input (bq24168) up to 2.5 A
• Safe and Accurate Battery-Management
Functions
– 1% Battery Regulation Accuracy
– 10% Charge Current Accuracy
• Charge Parameters Programmed Using I²C
Interface
• Voltage-Based, NTC Monitoring Input
– JEITA Compatible (bq24160, bq24160A,
bq24161B, bq24163, bq24168)
• Available in small 2.8-mm × 2.8-mm 49-ball
WCSP or 4-mm × 4-mm VQFN-24 Packages
2 Applications
• Handheld Products
• Portable Media Players
• Portable Equipment
• Netbook and Portable Internet Devices
3 Description
The bq24160, bq24160A, bq24161, bq24161B,
bq24163, and bq24168 are highly integrated single-
cell Li-Ion battery charger and system power path
management devices targeted for space-limited,
portable applications with high-capacity batteries. The
single-cell charger has dual inputs which allow
operation from either a USB port or a higher-power
input supply (that is, AC adapter or wireless charging
input) for a versatile solution. The two inputs are fully
isolated from each other and are easily selectable
using the I²C interface.
The power path management feature allows the
bq2416xx to power the system from a high-efficiency
DC-DC converter while simultaneously and
independently charging the battery. The power-path
management architecture enables the system to run
with a defective or absent battery pack and enables
instant system turnon even with a totally discharged
battery or no battery.
PART NUMBER
bq2416xx
Device Information
PACKAGE
BODY SIZE (NOM)
VQFN (24)
4.00 mm × 4.00 mm
DSBGA (49)
2.80 mm × 2.80 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Application Schematic
AC Adapter or
Wireless Power
VBUS
D+
D–
GND
IN
PMIDI
USB
PMIDU
SW
BOOT
SYS
System
Load
HOST
V_SYS
D+
D–
SDA
SCL
INT
PGND
BAT
TS
DRV
TEMP PACK+
+
–
PACK–
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.