Description

The BQ24045DSQR is a battery management integrated circuit (IC) which serves as an integrated Li-Ion linear charger and system power path management device that is designed for portable applications that are limited in space. This device is part of the BQ2407x series. It can operate using either a USB port or an AC adapter, and supports charge currents up to 1.5 A. Furthermore, it has a fully compliant USB charger that has selectable 100-mA and 500-mA maximum input currents, which makes it easier to tick all the boxes in the USB-IF compliance checklist. Additionally, the device has an input dynamic power management feature that prevents it from crashing in the presence of incorrectly configured USB sources.

Specifications and features

• Integrated Li-Ion linear charger and system power path management device
• Supports charge currents up to 1.5 A
• Fully Compliant USB Charger
• Selectable 100-mA and 500-mA Maximum Input Current
• 28-V Input Rating with Overvoltage Protection
• Integrated Dynamic Power Path Management (DPPM) Function
• Supports up to 1.5-A Charge Current with Current Monitoring Output (ISET)
• Programmable Input Current Limit up to 1.5 A for Wall Adapters
• Reverse Current, Short-Circuit and Thermal Protection
• NTC Thermistor Input
• Status Indication – Charging/Done, Power Good

Application Scenarios

The BQ24045DSQR is a versatile battery management IC that can be used in a wide variety of applications. The main application scenarios for this device include:

• Smart Phones
• Portable Media Players
• Portable Navigation Devices
• Low-Power Handheld Devices

Comparison

• USB-IF compliant
• Supports charge currents up to 1.5 A
• Input-based dynamic power management feature
• 28-V input rating with overvoltage protection
• Integrated Dynamic Power Path Management (DPPM) Function
• Status indication (Charging/Done, Power Good)
• Programmable Pre-Charge and Fast-Charge Safety Timers

• None identified