BQ24610RGER Power Path Management IC Battery Management Synch Sw-Mode Li-Ion Li-Poly Batt Charger

BQ24610RGER Power Path Management IC Battery Management Synch Sw-Mode Li-Ion Li-Poly Batt Charger

1 Features

• 600-kHz NMOS-NMOS Synchronous Buck Converter

• Stand-Alone Charger Support for Li-Ion or Li- Polymer

• 5-V to 28-V VCC Input Operating Range and Supports 1- to 6-Battery Cells (bq24610)

• 5-V to 24-V VCC Input Operating Range and Supports 1- to 5-Battery Cells (bq24617)

• Up to 10-A Charge Current and Adapter Current

• High-Accuracy Voltage and Current Regulation

  • – ±0.5% Charge Voltage Accuracy

  • – ±3% Charge Current Accuracy

  • – ±3% Adapter Current Accuracy

• Integration

  • – Automatic System Power Selection From Adapter or Battery

  • – Internal Loop Compensation and Soft Start

  • – Dynamic Power Management

• Safety Protection

  • – Input Overvoltage Protection

  • – Battery Thermistor Sense Hot and Cold Charge Suspend

  • – Battery Detection

  • – Reverse Protection Input FET

  • – Programmable Safety Timer

  • – Charge Overcurrent Protection

  • – Battery Short Protection

  • – Battery Overvoltage Protection

  • – Thermal Shutdown

– Charger Operation Status

• Charge Enable Pin

• 6-V Gate Drive for Synchronous Buck Converter

• 30-ns Driver Dead-Time and 99.5% Maximum Effective Duty Cycle

• Energy Star Low Quiescent Current Iq

• – < 15-μA Off-State Battery Discharge Current

• – < 1.5-mA Off-State Input Quiescent Current

   

2 Applications

• Netbooks, Mobile Internet Devices, and Ultra- Mobile PCs

• Personal Digital Assistants (PDAs) • Handheld Terminals
• Industrial and Medical Equipment • Portable Equipment

3 Description

The bq2461x is a highly integrated Li-ion or Li- polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge

The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage.

Device Information