Linear Charge Management Li-Ion/Li-Pol Packs 750mA 4.2V 10-Pin VSON EP T/R

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.

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