BQ25155YFPR

The BQ25155YFPR is a highly integrated single-cell Li-Ion and Li-Polymer battery charger IC designed to provide a complete power management solution for portable and battery-powered applications. This IC features low quiescent current for maximum efficiency and supports various charging profiles, making it suitable for a wide range of battery types and applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• TS: Temperature Sense Input
• PROG: Charge Current Programming Input
• PG: Power Good Indicator Output
• STAT: Charge Status Indicator Output
• CE: Charge Enable Input
• BAT: Battery Input
• PROG: Charge Current Programming Input
• TS: Temperature Sense Input
• TS: Temperature Sense Input
• GND: Ground Connection
• VSYS: System Output
• VINDPM: Input Voltage DPM setting
• VIN: Input Supply

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the BQ25155YFPR IC for a visual representation.

Key Features

• High Integration: The BQ25155YFPR integrates multiple power management functions, including battery charging, voltage regulation, and status indication, in a compact package.
• Programmable Charge Current: Allows for flexibility in setting the charge current to accommodate various battery sizes and types.
• Low Quiescent Current: Minimizes power consumption in standby or low-load conditions, optimizing overall system efficiency.
• Wide Input Voltage Range: Supports a wide input voltage range, enabling operation from various power sources, including USB ports and power adapters.
• Charge Status Indication: Provides visual indication of the charge status, facilitating user interface design in portable devices.

Note: For detailed technical specifications, please refer to the BQ25155YFPR datasheet.

Application

• Portable Devices: Ideal for charging batteries in portable electronic devices, such as smartphones, tablets, and wearables.
• Battery-Powered Systems: Suitable for use in standalone battery-powered systems, IoT devices, and wireless sensor nodes.
• Power Banks: Can be integrated into power bank designs to manage charging and power delivery to external devices.

Functionality

The BQ25155YFPR is a highly efficient and versatile battery charger IC that provides comprehensive power management for single-cell Li-Ion and Li-Polymer batteries. It offers programmable charging capabilities and integrated status indicators for seamless integration into various portable and battery-powered applications.

Usage Guide

• Power Supply: Connect VIN (Pin 12) to the input power source and BAT (Pin 6) to the battery to be charged.
• Charge Current Programming: Use the PROG pin to set the desired charge current based on the battery specifications.
• Temperature Sensing: Connect the TS pin to a thermistor for temperature monitoring during charging.

Frequently Asked Questions

Q: Is the BQ25155YFPR suitable for fast charging applications?
A: The BQ25155YFPR is optimized for low-power and efficient charging, making it ideal for applications where fast charging may not be the primary requirement.

Q: Can the BQ25155YFPR operate with USB power sources?
A: Yes, the wide input voltage range of the BQ25155YFPR allows it to operate with USB power sources commonly found in portable devices.