BQ24261M_15 Datasheet, PDF (1/56 Pages) Texas Instruments – bq2426x 3-A, 30-V, Host-Controlled Single-Input, Single-Cell Switched-Mode Li-Ion Battery Charger With Power-Path Management and USB-OTG Support

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bq24260, bq24261, bq24261M, bq24262
SLUSBU4D – DECEMBER 2013 – REVISED APRIL 2015
bq2426x 3-A, 30-V, Host-Controlled Single-Input, Single-Cell Switched-Mode Li-Ion Battery
Charger With Power-Path Management and USB-OTG Support
Not Recommended for New Designs : bq24260, bq24261
1 Features
•1 Charge Time Optimizer (Enhanced CC/CV
Transition) for Faster Charging
• Integrated FETs for up to 3-A Charge Rate at 5%
Accuracy and 93% Peak Efficiency
• Boost Capability to Supply 5 V at 1 A at IN for
USB OTG Supply
• Integrated 17-mΩ Power-Path MOSFET and
Optional BGATE Control to Maximize Battery Life
and Instantly Start up From a Deeply Discharged
Battery or No Battery
• 30-V Input Rating With Overvoltage Protection
Supports 5-V USB 2.0/3.0 and 12-V USB Power
Delivery (bq24261/1M)
• Small Solution Size In a 2.4-mm × 2.4-mm 36-Pin
WCSP or 4-mm × 4-mm 24-Pin QFN Package
– Total Charging Solution Can be 50 mm² or
Less With WCSP
• Safe and Accurate Battery-Management
Functions Programmed Using I²C Interface
– Charge Voltage, Current, Termination
Threshold, Input Current Limit, V_{IN_DPM}
Threshold
– Voltage-Based, JEITA-Compatible NTC
Monitoring Input
– Thermal Regulation Protection for Input
Current Control
– Thermal Shutdown and Protection
2 Applications
• Smart Phones and Tablets
• Handheld Products
• Power Banks and External Battery Packs
• Small Power Tools
• Portable Media Players and Gaming
3 Description
The bq24260/bq24261/bq24261M/bq24262 is a
highly integrated single-cell Li-Ion battery charger and
system power path management device that supports
operation from either a USB port or wall adapter
supply. The power-path feature allows the
bq24260/1/1M/2 to power the system from a high
efficiency DC-DC converter while simultaneously and
independently charging the battery. The power path
also permits the battery to supplement the system
current requirements when the adapter cannot. Many
features are programmable using the I²C interface.
To support USB OTG applications, the
bq24260/1/1M/2 is configurable to boost the battery
voltage to 5 V and supply up to 1 A at the input. The
battery is charged with three phases: precharge,
constant current, and constant voltage. Thermal
regulation prevents the die temperature from
exceeding 125°C. Additionally, a JEITA-compatible
battery pack thermistor monitoring input (TS) is
included to prevent the battery from charging outside
of its safe temperature range.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq24260/1/1M/2
DSBGA (36)
QFN (24)
2.40 mm × 2.40 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Application Schematic
VBUS
D+
D-
GND
HOST
V I/O
IN
PGND
PMID
D+
D-
CD
SDA
SCL
INT
SW
BOOT
`
SYS
`
BAT
bq24260
TS
VDRV
System
Load
TEMP
PACK+
PACK-
1
Charge Time Optimizer Effect
Charge Cycle 4000mAh Battery 2A Charge Rate
4.4
3
4.2
2.5
4
3.8
More Energy
2
3.6
Delivered to
the Battery
in the Same
3.4
Time
1.5
3.2
1
3
2.8
0.5
2.6
2.4
0
2000
VBAT_CTO
4000
6000
8000
Time (sec)
VBAT_Traditional IBAT_CTO
0
10000 11000
IBAT_Traditional
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.