BQ29410PWRG4 Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Not For New Designs
Moisture Sensitivity Level (MSL):	--
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion
Number of Cells:	2 ~ 4
Fault Protection:	Over Voltage
Interface:	--
Operating Temperature:	-40°C ~ 110°C (TA)
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	BQ29410

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Introduction

PMIC (Power Management ICs) are integrated circuits designed to optimize the battery performance of electronic systems. They are also known as battery management systems as they perform a range of monitoring and control functions, such as voltage and current regulation, battery charging, and safety protection. The BQ29410PWRG4 is a high performance PMIC, specifically designed for applications requiring a long battery life, like wearables, portable medical devices, and consumer electronics.

Functionality

The BQ29410PWRG4 is a battery fuel gauge monitor, which provides precise voltage and current measurements of the battery’s state-of-charge, temperature, and health. It is designed to increase the accuracy and operation time of a range of consumer products, as well as enable new features, such as overcharge and over-discharge protection in high-capacity battery pack designs. Additionally, the device offers direct safety-critical features and can be programmed for optional features such as fast charging and fast discharge.

Application field & Working Principle

The BQ29410PWRG4 is ideal for a range of IoT and mobile products, as well as handheld electronics, such as mobile medical equipment, healthcare, wearables, and consumer electronics. The device works by monitoring the battery’s charge and temperature in real-time, allowing it to respond to changes in the battery condition, such as overcharging or over-discharging. Additionally, the device allows for the design of safety-critical features, such as current and voltage limiting, battery thermal protection, and low battery/high battery detection. The device works by collecting data from various points on a Li-Ion battery, such as voltage, current, and temperature. This data is then used to calculate the battery’s state-of-charge and state-of-health. Additionally, the device can provide redundancy, meaning that if one cell fails, the device will still be able to monitor and control the remaining cells. The device also provides an interface for advanced features, such as communicating with external controllers, and configurable parameters can be programed by the user. This gives the user greater control over the system and makes it suitable for a range of applications.

Integrated Protection Features

The BQ29410PWRG4 provides several integrated protection features to ensure safe operation of the system. These protections include short-circuit protection, over-temperature protection, overcharge protection, and over-discharge protection. Additionally, the device can be programmed with safety-critical features such as low battery/high battery detection, current limiting, and thermal protection.

Conclusion

The BQ29410PWRG4 is an advanced battery fuel gauge monitor designed for use in wearables, portable medical equipment, and consumer electronics. It enables precise monitoring of the battery’s state-of-charge and state-of-health, as well as providing an array of integrated protection features. This makes it an ideal choice for high-capacity battery packs, as it offers the user greater control and more reliable operation.

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