BQ24075TRGTR Power Path Management IC Battery Management 1.5A USB-Friendly Li Ion Batt Charger

1 Features

• Fully Compliant USB Charger

• Selectable 100mA and 500mA Maximum Input

  Current

• 100mA Maximum Current Limit Ensures Compliance to USB-IF Standard

• Input based Dynamic Power Management (VIN- DPM) for Protection Against Poor USB Sources

• 28V Input Rating with Over-voltage Protection

• Integrated Dynamic Power Path Management (DPPM) Function Simultaneously and Independently Powers the System and Charges the Battery

• System Output Tracks Battery Voltage (bq24072T)

• Supports up to 1.5A Charge Current with Current Monitoring Output (ISET)

• Programmable Input Current Limit up to 1.5A for Wall Adapters

• Battery Disconnect Function with SYSOFF Input

• Reverse Current, Short-Circuit and Thermal Protection

• Flexible Voltage Based NTC Thermistor Input

• Proprietary Start Up Sequence Limits Inrush Current

• Status Indication – Charging/Done, Power Good

• Small 3 mm × 3 mm 16 Lead VQFN Package

2 Applications

• Smart Phones

• PDAs

• MP3 Players

• Low-Power Handheld Devices

3 Description

The bq2407xT series of devices are integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents up to 1.5A. The input voltage range with input over-voltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the bq2407xT to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN - DPM) prevents the charger from crashing incorrectly configure USB sources.

Device Information