BQ24187 Datasheet, PDF (1/44 Pages) Texas Instruments – 1A USB-OTG Support

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bq24187
SLUSBM0 – APRIL 2014
bq24187 2A, 30V Host-Controlled Single-Input, Single Cell Switchmode Li-Ion Battery
Charger with Integrated Sense Element and 1A USB-OTG Support
1 Features
•1 Charge Time Optimizer (Enhanced CC/CV
Transition) for Faster Charging
• Integrated FETs for Up to 2A Charge Rate at 5%
Accuracy and 93% Peak Efficiency
• Boost Capability to Supply 5V at 1A at IN for USB
OTG Supply
• Integrated Current Sense Resistor for Smallest
Size and Cost
• 30V Input Rating with Over-Voltage Protection
Supports 5V USB2.0/3.0 with 6.5V OVP
• Small Solution Size In a 2,4mm x 2,4mm 36-ball
WCSP or 4mm x 4mm QFN-24 Package
• 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
• Smartphones and Tablets
• Handheld Products
• Power Banks and External Battery Packs
• Small Power Tools
• Portable Media Players and Gaming
3 Description
The bq24187 is a highly integrated single cell Li-Ion
battery charger targeted for space-limited, portable
applications with high capacity batteries. The single
cell charger has a single input that supports operation
from either a USB port or wall adapter supply for a
versatile solution. The integrated sense element
reduces solution size and external component count.
The charge parameters are programmable using the
I2C interface. To Support USB OTG applications, the
bq24187 is configurable to boost the battery voltage
to 5V at the input. In this mode, the bq24187 supplies
up to 1A and operates with battery voltages down to
3.3V. A voltage-based, JEITA compatible battery
pack thermistor monitoring input (TS) is included that
monitors battery temperature for safe charging.
Device Information
ORDER NUMBER⁽¹⁾
PACKAGE
BODY SIZE
bq24187YFFR
bq24187RGER ⁽²⁾
DSBGA (36)
VQFN (24)
2,4mm × 2,4mm
4mm × 4mm
(1) For ordering information see the addendums at the end of the
data sheet.
(2) PREVIEW
4 Typical Application
IN
VBUS
D+
D-
GND
SW
PGND
BOOT
DRV
CS+
HOST
GPIO1
SDA
SCL
USB PHY
BAT
PSEL
bq24187
TS
INT
SDA
SCL
TEMP
PACK+
VDRV
PACK-
System
Load
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.