1 Features

• Input Voltage Dynamic Power Management Feature (VBUS_DPM)
• Selectable Battery Tracking Mode to Maximize the Charge Rate from Solar Panel Using DPM Feature
• Load Mode to Support Loads Connected at VBUS Pin
• 20-V Input Rating, With Overvoltage Protection (OVP)
• 1% Battery Voltage Regulation Accuracy
• Current Charge up to 800 mA With 10% Charge Current Accuracy
• Thermal Regulation Protection for Output Current Control
• Low Battery Leakage Current
• BAT Short-Circuit Protection
• NTC Input Monitoring
• Built-In Safety Timer With Reset Control
• Status Indication – Charging/Power Present
• Available in Small 2-mm × 3-mm 10-Pin WSON Package

2 Applications

• Smart Phones
• PDAs
• MP3 Players
• Low-Power Handheld Devices
• Auxiliary Solar Chargers

3 Description

The bq24210 device is a highly integrated Li-Ion linear charger targeted at space-limited portable applications. The battery is charged in three phases: conditioning, constant current and constant voltage with an IC thermal protection and safety timer. The charge current value is programmable through an external resistor.The high input voltage range with input overvoltage protection supports low-cost unregulated adapters. The input voltage regulation loop with programmable input voltage regulation threshold make it suitable for charging from alternative power sources, such as solar panel or inductive charging pad. Furthermore, when no input source is present, the IC has a load mode to power peripherals by connecting the battery to the VBUS. Load mode has current limiting function to prevent overload.

1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Typical Application Schematic