BQ24085 Status: ACTIVE

Product Information

Features

• Ideal for Low-Dropout Designs for Single-Cell Li-Ion or Li-Pol Packs in Space Limited Applications
• Integrated Power FET and Current Sensor for up to 750-mA Charge Applications
• Reverse Leakage Protection Prevents Battery Drainage
• ±0.5% Voltage Regulation Accuracy
• Thermal Regulation Maximizes Charge Rate
• Charge Termination by Minimum Current and Time
• Precharge Conditioning With Safety Timer
• Status Outputs for LED or System Interface Indicate Charge, Fault, and Power Good Outputs
• Short-Circuit and Thermal Protection
• Automatic Sleep Mode for Low Power Consumption
• Small 3×3 mm MLP Package
• Selectable Battery Insertion and Battery Absent Detection
• Input Overvoltage Protection
  • 6.5 V and 10.5 V Options
• APPLICATIONS
  • PDA, MP3 Players, Digital Cameras
  • Internet Appliances and Handheld Devices

Description

The bq24085/6/7/8 series are highly integrated Li-Ion and Li-Pol linear chargers, targeted at space-limited portable applications. The bq24085/6/7/8 series offers a variety of safety features and functional options, while still implementing a complete charging system in a small package. The battery is charged in three phases: conditioning, constant or thermally regulated current, and constant voltage. Charge is terminated based on minimum current. An internal programmable charge timer provides a backup safety feature for charge termination and is dynamically adjusted during the thermal regulation phase. The bq24085/6/7/8 automatically restarts the charge if the battery voltage falls below an internal threshold; sleep mode is set when the external input supply is removed. Multiple versions of this device family enable easy design of the bq24085/6/7/8 in cradle chargers or in the end equipment, while using low cost or high-end AC adapters.