Battery Monitoring Fuel Gauge IC Manufacturers: Maxim, ST, ON Semiconductor

This page covers Battery Monitoring Fuel Gauge IC manufacturers or vendors.

The manufacturers of Fuel Gauge ICs used for battery monitoring include Maxim Integrated, STMicroelectronics, ON Semiconductor, etc.

Introduction

The fuel gauge IC is used to monitor the state of charge and health of a battery. This IC helps in predicting how long the battery can provide power under specific operating conditions. This helps the user avoid sudden shutdowns of the battery-operated device, enhancing the user experience.

What is a Fuel Gauge IC?

As mentioned, this IC is used to monitor battery voltage continuously. The applications of fuel gauge ICs include wireless speakers, medical devices, mobile phones, tablets, laptops, PCs, e-bikes, financial terminals, printers, cameras, robots, and AR/VR devices.

All the ICs are interfaced with the battery terminals. The IC stores various parameters in internal registers. All these ICs have an I2C interface which provides access to registers with vital information such as the remaining capacity of the battery, state of charge (SOC), temperature, etc. The I2C interface has two pins: serial clock and serial data.

Battery Monitoring IC Examples

Let’s examine some specific ICs from different manufacturers:

MAX17261 | Battery Monitoring IC from Maxim Integrated

The MAX17261 from Maxim offers the following features:

• Use of ModelGauge m5 EZ algorithm
• Automatic compensation of temperature, discharge rate, and cell aging
• Provides SOC in %, battery capacity in mAh, etc.
• Provides accurate measurements of voltage, current, temperature, etc.
• Two-wire I2C interface to access control and data registers.
• Provides time-to-empty and time-to-full estimations
• No calibration needed
• Visit: Maxim Integrated for more information

LC709203F | Fuel Gauge IC from ON Semiconductor

The LC709203F from ON Semiconductor offers these features:

• Designed for 1-cell lithium ion/polymer batteries
• Uses HG-CVR algorithm to measure the relative State of Charge (RSOC) of the battery.
• Eliminates the use of a sense resistor to provide accurate RSOC measurement irrespective of various conditions such as change in temperature, battery, loading, self-discharge, aging, etc.
• Provides precision voltage measurement with low power consumption.
• Takes care of temperature compensation.
• Houses I2C interface.
• Visit: ON Semiconductor for more information

STC3117 | Battery Monitoring IC from STMicroelectronics

The STC3117 from STMicroelectronics has these features:

• Provides a very accurate state of charge (SOC) of the battery using ST’s proprietary algorithm.
• Offers a programmable low battery alarm in addition to missing/swapped battery operation.
• Houses a temperature sensor, sigma-delta ADC, I2C interface, registers, etc.
• ADC (A to D converter) is used to measure the current, voltage, and temperature.
• Visit: ST Microelectronics for more information