1 Features

• High Efficiency 4.5-A Switch Mode Charger

– 92% Charge Efficiency at 2 A, 90% at 4 A

– Accelerate Charge Time by Battery Path

Impedance Compensatioin

• Highest Battery Discharge Efficiency with 12-mΩ

Battery Discharge MOSFET up to 9-A Discharge

Current

• Single Input USB-compliant/Adapter Charger

– USB Host or Charging Port D+/D- Detection

Compatible to USB Battery Charger Spec 1.2

– Input Voltage and Current Limit Supports

USB2.0 and USB3.0

– Input Current Limit: 100 mA, 150 mA, 500 mA,

900 mA, 1.2 A, 1.5 A, 2 A and 3 A

• 3.9-V to 17-V Input Operating Voltage Range

– Support All Kinds of Adapter with Input Voltage

DPM Regulation

• USB OTG 5 V at 1.3 A Synchronous Boost

Converter Operation

– 93% 5-V Boost Efficiency at 1 A

• Narrow VDC (NVDC) Power Path Management

– Instant-on Works with No Battery or Deeply

Discharged Battery

– Ideal Diode Operation in Battery Supplement

Mode

• 1.5-MHz Switching Frequency for Low Profile

Inductor

• Autonomous Battery Charging with or without

Host Management

– Battery Charge Enable

– Battery Charge Preconditioning

– Charge Termination and Recharge

• High Accuracy (0°C to 125°C)

– ±0.5% Charge Voltage Regulation

– ±7% Charge Current Regulation

– ±7.5% Input Current Regulation

– ±2% Output Regulation in Boost Mode

• High Integration

– Power Path Management

– Synchronous Switching MOSFETs

– Integrated Current Sensing

– Bootstrap Diode

– Internal Loop Compensation

• Safety

– Battery Temperature Sensing and Charging

Safety Timer

– JEITA Guideline Compliant

– Thermal Regulation and Thermal Shutdown

– Input System Over-Voltage Protection

– MOSFET Over-Current Protection

• Charge Status Outputs for LED or Host Processor

• Low Battery Leakage Current and Support

Shipping Mode

• 4.00 mm x 4.00 mm QFN-24 Package

2 Applications

• Tablet PC and Smart Phone

• Portable Audio Speaker

• Portable Media Players

• Internet Devices

3 Description

The bq24193 is a highly-integrated switch-mode

battery charge management and system power path

management device for single cell Li-Ion and Lipolymer

batteries in a wide range of tablet and other

portable devices.