EmbeddedRelated.com
BQ25504RGTR

TIBQ25504RGTR

Texas Instruments
Battery Management Ultra Low Power Boos t Converter A 595-B A 595-BQ25504RGTT
NRND3,634 in stock

Overview

The BQ25504RGTR is a highly efficient boost converter designed specifically to manage microwatts of power generated from high-impedance sources like solar cells or thermoelectric generators. It features an ultra-low quiescent current of 330nA and integrates a cold-start circuit that allows the system to begin operation from an input voltage as low as 130mV.

Why Choose This Part

This device features integrated Maximum Power Point Tracking (MPPT) to optimize energy extraction from various harvesting sources. It provides comprehensive battery protection, including programmable undervoltage and overvoltage thresholds, while maintaining an extremely low 330nA supply current to maximize storage efficiency.

Applications

Solar Energy Harvesting
Extracting power from small indoor or outdoor photovoltaic cells to charge Li-Ion batteries or thin-film capacitors.
Thermoelectric Generator (TEG) Systems
Converting low-voltage thermal energy into usable power for wireless sensor nodes.
Wireless Sensor Networks
Providing autonomous power management for remote loT devices that require long-term operation without battery replacement.

Key Specifications

Applications Energy Harvesting
Mounting Type Surface Mount
Package / Case 16-VFQFN Exposed Pad
Current - Supply 330nA
Voltage - Supply 2.5V ~ 5.25V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 16-VQFN (3x3)

Getting Started

Engineers can evaluate this IC using the BQ25504EVM-674 evaluation module, which provides headers for connecting harvesting sources and storage elements. Design involves calculating external resistor dividers to set the MPPT ratio and battery protection voltages according to the specific storage chemistry used.

Also Consider

ADP5091 Analog Devices - Offers similar ultra-low power harvesting with an integrated regulated output for powering sensors directly.