BQ24296_15 Datasheet, PDF (1/55 Pages) Texas Instruments – bq2429x I2C Controlled 3-A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

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bq24296, bq24297
SLUSBP6B – SEPTEMBER 2013 – REVISED NOVEMBER 2014
bq2429x I²C Controlled 3-A Single Cell USB Charger With Narrow VDC
Power Path Management and Adjustable Voltage USB OTG
1 Features
• 90% High Efficiency Switch Mode 3-A Charger
• 3.9-V to 6.2-V Single Input USB-Compliant
Charger with 6.4-V Over-Voltage Protection
– USB Host or Charging Port D+/D- Detection
Compatible to USB Battery Charger Spec
(BC1.2)
– Supports Nonstandard 2-A/1-A Adapters
Detection (bq24297)
– Input Voltage and Current Limit Supports USB
2.0 and USB 3.0
– Input Current Limit: 100 mA, 150 mA, 500 mA,
900 mA, 1 A, 1.5 A, 2 A, and 3 A
• USB OTG with Adjustable Output 4.55 V to 5.5 V
at 1 A or 1.5 A
– Fast OTG Startup (22 ms Typ)
– 90% 5-V Boost Mode Efficiency
– Accurate ±15% Hiccup Mode Over-Current
Protection
• Narrow VDC (NVDC) Power Path Management
– Instant System On with No Battery or Deeply
Discharged Battery
– Ideal Diode Operation in Battery Supplement
Mode
• 1.5-MHz Switching Frequency for Low Profile 1.2-
mm Inductor
• I²C Port for Optimal System Performance and
Status Reporting
• Autonomous Battery Charging With or Without
Host Management
– Battery Charge Enable and 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
1
• 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
• 20-µA Low Battery Leakage Current and Support
Shipping Mode
• 4.00-mm x 4.00-mm VQFN-24 Package
2 Applications
• Tablet PC, Smart Phone, Internet Devices
• Portable Audio Speaker
• Handheld Computers, PDA, and POS
3 Description
The bq24296/bq24297 are highly-integrated switch-
mode battery charge management and system power
path management devices for 1 cell Li-Ion and Li-
polymer batteries in a wide range of smart phone and
tablet applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq24296/7
VQFN (24)
4.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
5V USB
SDP/DCP
1mF
8.2mH
SYS
VREF
Host
USB
PHY
VBUS
SW
PMID
STAT
BTST
REGN
PGND
SDA
SYS
SCL
INT
BAT
OTG
QON
CE
TS
D+/PSEL
D-/PG
ILIM
bq24296/297
1mH
47nF
4.7mF
SYSTEM
20mF
Battery
Optional
10mF
+
-
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.