MPQ4569GN-AEC1

Voltage - Input (Max):	75V
Supplier Device Package:	8-SOIC-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	--
Current - Output:	300mA
Voltage - Output (Max):	67.5V
Voltage - Output (Min/Fixed):	1V
Series:	Automotive, AEC-Q100
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The MPQ4569GN-AEC1 voltage regulator is a DC-DC switching regulator that provides tightly regulated voltage/power output. It is designed to provide dependable and efficient output to a wide variety of applications. This article will discuss the MPQ4569GN-AEC1 application field and working principle.

Application Field

The MPQ4569GN-AEC1 has a wide range of applications. It is ideal for use in portable and circuit power supplies, telecommunication systems, datacom and computing systems, household appliances, portable audio/video systems, and industrial systems. It is also suitable for use in automotive and avionic applications, such as radiators, onboard computers, and driving sensors. The MPQ4569GN-AEC1 can provide protection from short-circuits, overloads, and thermal derating. The device also allows for following dynamic load requirements, offering very good dynamic response and high power output capability. The device is designed to accept a wide range of input voltage, from 7 to 40 V, while providing an output voltage of 0 to 12 V. The MPQ4569GN-AEC1 can switch up to 3A of continuous current, while providing a peak current of 6A.

Working Principle

The MPQ4569GN-AEC1 is a buck converter type DC-DC switching regulator. It is designed to convert a source of DC voltage (input) to a regulated DC voltage (output) with a high efficiency. It does this by controlling the switch of an integrated MOSFET transistor wire, to vary the input voltage. The MPQ4569GN-AEC1 operates in a constant frequency mode and incorporates an adjustable current mode control. This allows for a very fast line and load regulation, and also permits independent adjustment of voltage and current loop parameters.A PWM control circuit adjusts the on-time of the MOSFET switch according to the difference between the output voltage and the reference voltage. The MPQ4569GN-AEC1 also includes an overload protection circuit to protect against excessive current.

Conclusion

The MPQ4569GN-AEC1 is a DC-DC buck converter type voltage regulator designed for use in a wide range of applications, ranging from portable and circuit power supplies, to automotive and avionic applications. It operates in a constant frequency mode and incorporates adjustable current mode controls to provide fast line and load response. It is also designed to provide protection from over-voltages, over-loads, and thermal drift.

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