Frequency - Switching:	250kHz, 500kHz
Base Part Number:	MAX5067
Supplier Device Package:	44-TQFN-EP (7x7)
Package / Case:	44-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Phase Control, Power Good
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 28 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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MAX5067ETH+ Application Field And Working Principle

Introduction

The MAX5067ETH+ is a series of dual-channel, synchronous, regulated step-down DC-to-DC switching controllers suitable for automotive, industrial and consumer applications. It is designed to save board space while providing a wide range of non-volatile output adjustable control of up to 4A solid-state switches. The controller integrates 2 high-side, low-side synchronous rectified FETs and incorporates many functions to reduce the number of external components. The MAX5067ETH+ provides a simplified solution for stepped-down voltage conversion with multiple fixed and variable output voltage specifications.

Application Field

The MAX5067ETH+ is used in automotive, industrial and consumer applications such as motor control, 48V battery systems, motor-driven white goods, and industrial automation equipment. It features high efficiency, low power consumption, robust protection, and a very wide input voltage range from 4.5V to 60V. The device operates in forced or burst mode operation within its operating frequency range from 100kHz to 700kHz.The MAX5067ETH+ supports up to four output channels, allowing multiple output voltages to be controlled independently using a single device. The device can be used for motor control, battery management systems, automotive, industrial, and consumer applications.

Working Principle

The MAX5067ETH+ has two channels that can be independently controlled. Each channel is capable of controlling up to 4A of load current. The controller operates in either forced or burst mode operation, the latter of which allows it to efficiently regulate load current while minimizing losses.The device has a fixed, adjustable or variable output voltage. It uses Pulse Width Modulation (PWM) to regulate the output voltage by varying the duty cycle of the switching signal. The duty cycle is determined by the input signal, with higher signal voltages resulting in higher duty cycles. The MAX5067ETH+ also features internal over-temperature, over-current, and under-voltage protections that prevent damage to the system when these conditions arise.In addition, the MAX5067ETH+ can be synchronized to an external clock signal for accurate voltage control. This feature allows for precise control of the output voltage without the need for an external voltage reference.

Conclusion

The MAX5067ETH+ is a dual-channel, synchronous regulated step-down DC-to-DC switching controller suitable for automotive, industrial, and consumer applications. It features high efficiency, low power consumption, robust protection, and wide input voltage range. The device can be used to control up to four output channels, allowing multiple output voltages to be controlled independently. It uses Pulse Width Modulation (PWM) to regulate the output voltage by varying the duty cycle of the switching signal. The device also offers synchronization functionality that allows for precise control of the output voltage. The MAX5067ETH+ is ideal for applications such as motor control, 48V battery systems, motor-driven white goods, and industrial automation equipment.

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