BQ24297RGER Power Path Management IC Battery Management I2C Cntl 3A SGL Cell USB NVDC-1 Charger

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
• 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