BQ24600RVAT Power Path Management IC Battery Management Standalone Synch Sw- mode Charge Cntrlr

1 Features

• 1.2-MHz NMOS-NMOS Synchronous Buck Converter

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

• 5-V – 28-V VCC Input Voltage Range and Supports 1S-6S Battery Cells

• Up to 10-A Charge Current and Adapter Current

• High-Accuracy Voltage and Current Regulation

  • – ±0.5% Charge-Voltage Accuracy

  • – ±3% Charge-Current Accuracy

• Integration

  • – Internal Loop Compensation

  • – Internal Soft Start

• Safety

  • – Input Overvoltage Protection

  • – Battery Thermistor Sense Hot/Cold Charge Suspend

  • – Battery Detection

  • – Built-In Safety Timer

  • – Charge Overcurrent Protection

  • – Battery Short Protection

  • – Battery Overvoltage Protection

  • – Thermal Shutdown

• Status Outputs

  • – Adapter Present

  • – Charger Operation Status

• Charge Enable Pin

• 6-V Gate Drive for Synchronous Power Converter

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

• 16-Pin 3.5-mm × 3.5-mm QFN package

• Energy Star Low Quiescent Current Iq

2 Applications

• Portable Equipment Handle Terminals
• Industrial and Medical Equipment
• Power Tools Appliance
• Mobile Internet Device, and Ultra-Mobile PC

3 Description

The bq24600 is a highly integrated Li-ion or Li- polymer switch-mode battery-charge controller. It offers a constant-frequency synchronous PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, and charge status monitoring,

The bq24600 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The bq24600 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low- quiescent-current sleep mode when the input voltage falls below the battery voltage.

Device Information