BQ25820RRVR

Battery Chargers Overview

The BQ25820RRVR is a synchronous buck DC/DC charging controller designed for high-voltage battery applications. It supports input voltages from 4.2V to 70V and output voltages up to 70V, enabling the charging of 1S to 16S lithium-ion or LiFePO4 battery packs. The device integrates direct power path management, allowing system load sharing during charging. It features an I2C interface for configuration and monitoring, supporting programmable charge current and voltage settings.

Battery Chargers Feature Summary

• Integrated synchronous buck converter with NFET drivers for high efficiency
• Direct power path control for simultaneous charging and system operation
• Built-in maximum power point tracking (MPPT) for solar energy harvesting
• Comprehensive safety protections including overvoltage, overcurrent, and thermal regulation

Battery Chargers Applications

• High-voltage cordless power tools and garden equipment
• Solar-powered backup chargers and energy storage systems
• Unmanned aerial vehicles (drones)
• Medical equipment such as ultrasound and X-ray systems
• Vacuum robots and multi-parameter patient monitors

Battery Chargers Procurement Notes

Verify the specific suffix RRVR against the manufacturer's datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target PCB footprint and thermal requirements. Confirm that the I2C address and register map align with the host controller software implementation. Check for any recent lifecycle notices or obsolescence warnings before finalizing procurement plans.

Battery Chargers Selection Notes

Select this component when designing systems requiring wide input voltage ranges, particularly for solar or high-voltage battery architectures. It is suitable for applications needing integrated MPPT functionality without external microcontrollers for basic operation. Consider the thermal performance and inductor selection carefully due to the high current capabilities and voltage ratings involved in the design.

Battery Chargers Part Context

This part belongs to the BQ25820 family of high-voltage battery chargers from Texas Instruments. It is the tape-and-reel packaged version of the BQ25820 IC, distinct from evaluation modules like the BQ25820EVM. The family is characterized by its ability to handle high series cell counts and integrate power path management directly within the charger controller.

Battery Chargers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.