MAX17049X+

Series:	ModelGauge™
Packaging:	Tube
Part Status:	Active
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion
Number of Cells:	2
Fault Protection:	--
Interface:	I²C
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	8-WFBGA, WLCSP
Supplier Device Package:	8-WLP (1.66x0.92)
Base Part Number:	MAX17049

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Introduction

The MAX17049X+ is a low voltage power management IC from Maxim Integrated. It is part of the company\'s Power Module family, which offers a comprehensive approach to power management for applications where size, safety, and efficiency are key considerations. The device is a highly integrated controller and voltage regulator solution for Li-Ion and Li-Po battery packs up to 4-cells in size. It provides a wide range of features and functions tailored to support medium and large form factor battery packs such as those found in automotive, industrial, unmanned aerial vehicles (UAVs), portable medical, and consumer electronics.

Application Field

The MAX17049X+ is an important component of applications that depend on long battery life and reliable power management. These applications include mobile phones, digital cameras, tablets and laptops, as well as high-performance battery packs used in unmanned aerial vehicles (UAVs), portable medical devices, and auto-docking devices. This device is also applicable for other power management scenarios such as solar cells, fuel cell stacks, and high-end electronic devices.The MAX17049X+ is a low voltage power management IC from Maxim Integrated and is designed for Li-Ion and Li-Po battery packs. It offers the perfect balance between performance and price for medium and high-end applications. The device features low dropout regulators that can be configured for low power dissipation, low quiescent current, and high load efficiency.

Features and Benefits

The MAX17049X+ offers a wide range of benefits to application designers. It provides a range of external components to regulate the low voltage power supply to other ICs and modules. This reduces the need for a host or discrete system level components. The device also simplifies connection to a variety of battery sizes, ensuring that the host can always get the right supply voltage.Other features include:• Active cell balancing to ensure equal power distribution across all cells• State-of-charge (SoC) measurements to measure cell voltage and record when a cell needs to be recharged• Read and write access to up to 16 memory registers that store user-configurable settings and status information• An internal charge pump that can boost the battery voltage when necessary• OVP (over-voltage protection) as an added safety feature for Li-Ion and Li-Po batteries• Thermal shutdown for over-temperature protection

Working Principle

The MAX17049X+ is essentially a controller and voltage regulator circuit. The device uses a voltage sensing and control loop to monitor and control the input voltage to the load. The voltage loop is based on a standard comparator circuit that compares a variable reference voltage to the input voltage. The reference voltage is applied to the MAX17049X+’s voltage sensing terminal (VREF) and the input voltage is applied to the device’s main terminal (VIN).When the input voltage reaches or exceeds the reference voltage, the MAX17049X+ voltage sensing circuit is triggered and the device enters the active regulation mode. The device then begins to adjust the output voltage to maintain the desired level of regulation.In addition, the MAX17049X+ has an internal charge pump that can boost the battery voltage when necessary. This feature can be used to temporarily increase the voltage of a low-capacity battery, for example. It is also used to level out any fluctuations in the battery voltage. This process is known as charging and is done automatically by the MAX17049X+.

Conclusion

The MAX17049X+ from Maxim Integrated is a highly integrated and customizable power management IC that offers all the features necessary for reliable and cost-efficient operation. This device is designed for applications that require long battery life and is ideal for Li-Ion and Li-Po battery packs up to 4 cells in size. It boasts low quiescent current, low power dissipation, and high load efficiency for high-performance applications. It features active cell balancing, state-of-charge measurements, memory register access, an integrated charge pump and over-voltage protection. Its working principle is based on a standard comparator circuit that monitors the input voltage and adjusts it accordingly.

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