BQ24297 Datasheet, PDF (1/48 Pages) Texas Instruments – I2C Controlled 3A Single Cell USB Charger

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bq24296
bq24297
SLUSBP6A – SEPTEMBER 2013 – REVISED OCTOBER 2013
I²C Controlled 3A Single Cell USB Charger With Narrow VDC
Power Path Management and Adjustable Voltage USB OTG
Check for Samples: bq24296, bq24297
FEATURES
1
•2 90% High Efficiency Switch Mode 3A Charger
• 3.9V-6.2V Single Input USB-compliant Charger
with 6.4V Over-Voltage Protection
– USB Host or Charging Port D+/D- Detection
Compatible to USB Battery Charger Spec
(BC1.2)
– Support Non-standard 2A/1A Adapters
detection (bq24297)
– Input voltage and current limit supports
USB2.0 and USB 3.0
– Input Current Limit: 100mA, 150mA, 500mA,
900mA, 1A, 1.5A, 2A, and 3A
• USB OTG with Adjustable output 4.55-
5.5V@1A or 1.5A
– Fast OTG Startup (22ms typ.)
– 90% 5V Boost Mode Efficiency
– Accurate +/-15% Hiccup Mode Overcurrent
Protection
• Narrow VDC (NVDC) Power Path Management
– Instant System On with No Battery or
Deeply Discharged Battery
– Ideal Diode Operation in Battery
Supplement Mode
• 1.5MHz Switching Frequency for Low Profile
1.2mm Inductor
• I2C port for optimal system performance and
status reporting
• Autonomous Battery Charging with or without
Host Management
– Battery Charge Enable
– Battery Charge Preconditioning
– Charge Termination and Recharge
• High Accuracy
– ±0.5% Charge Voltage Regulation
– ±7% Charge Current Regulation
– ±7.5% Input Current Regulation
– ±3% Output Voltage Regulation in USB
OTG Boost Mode
• High Integration
– Power Path Management
– Synchronous Switching MOSFETs
– Integrated Current Sensing
– Bootstrap Diode
– Internal Loop Compensation
• Safety
– Battery Temperature Sensing for Charging
and Discharging in OTG Mode
– Battery Charging Safety Timer
– Thermal Regulation and Thermal Shutdown
– Input and System Over-Voltage Protection
– MOSFET Over-Current Protection
• Charge Status Outputs for LED or Host
Processor
• Maximum power tracking capability by input
voltage regulation
• 20µA Low Battery Leakage Current and
Support Shipping Mode
• 4mm x 4mm QFN-24 Package
APPLICATIONS
• Tablet PC
• Smart Phone
• Portable Audio Speaker
• Internet Devices
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated