MPQ4559DQ-AEC1-LF-Z

NRND

Monolithic Power Systems Inc.

1.5A, 2MHZ, 55V STEP-DOWN CONVERTER, INDUSTRIAL

MPQ4559DQ-AEC1-LF-Z

NRND

Monolithic Power Systems Inc.

1.5A, 2MHZ, 55V STEP-DOWN CONVERTER, INDUSTRIAL

Description Specifications Series Pricing CAD Documents

Description

General part information

MPQ4559 Series

The MPQ4559 is a high frequency step-down switching regulator with integrated internal highside high voltage power MOSFET. It provides 1.5A output with current mode control for fast loop response and easy compensation. The wide 3.8V to 55V input range accommodates a variety of step-down applications, including those in automotive input environment. A 12µA shutdown mode supply current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. By switching at 2MHz, the MPQ4559 is able to prevent EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications. The MPQ4559 is available in small 3mm x 3mm QFN10 and SOIC8 with exposed pad packages.Guaranteed Industrial Temp Range Limits Wide 3.8V to 55V Operating Input Range 250m? Internal Power MOSFET Up to 2MHz Programmable Switching Frequency 140µA Quiescent Current Ceramic Capacitor Stable Internal Soft-Start Up to 95% Efficiency Output Adjustable from 0.8V to 52V Available in QFN (3mm x 3mm) and SOIC8E with Exposed Pad Packages AEC-Q100 Qualified

Technical Specifications

Parameters and characteristics for this part

Specification	MPQ4559DQ-AEC1-LF-Z

Current - Output	1.5 A
Frequency - Switching (Max)	2 MHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	10-VFDFN Exposed Pad
Package Length	3 mm
Package Name	10-QFN
Package Width	3 mm
Qualification	AEC-Q100
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	55 V
Voltage - Input (Min)	3.8 V
Voltage - Output (Max)	52 V
Voltage - Output (Min/Fixed)	0.8 V

MPQ4559 Series

Part	Frequency - Switching (Max)	Voltage - Input (Min)	Function	Synchronous Rectifier	Output Type	Current - Output	Voltage - Output (Min/Fixed)	Topology	Voltage - Input (Max)	Package / Case	Voltage - Output (Max)	Mounting Type	Package Length	Package Name	Package Width	Operating Temperature (Max)	Operating Temperature (Min)	Number of Outputs	Output Configuration	Grade	Qualification	Package Features
Monolithic Power Systems Inc. MPQ4559DQ-LF-P	2 MHz	3.8 V	Step-Down	No	Adjustable	1.5 A	0.8 V	Buck	55 V	10-VFDFN Exposed Pad	52 V	Surface Mount	3 mm	10-QFN	3 mm	125 °C	-40 °C	1	Positive
Monolithic Power Systems Inc. MPQ4559DQ-AEC1-LF-Z	2 MHz	3.8 V	Step-Down	No	Adjustable	1.5 A	0.8 V	Buck	55 V	10-VFDFN Exposed Pad	52 V	Surface Mount	3 mm	10-QFN	3 mm	125 °C	-40 °C	1	Positive	Automotive	AEC-Q100
Monolithic Power Systems Inc. MPQ4559DN-LF-Z	2 MHz	3.8 V	Step-Down	No	Adjustable	1.5 A	0.8 V	Buck	55 V		52 V	Surface Mount	0.154 in	8-SOIC 8-SOICE	3.9 mm	125 °C	-40 °C	1	Positive			Exposed Pad
Monolithic Power Systems Inc. MPQ4559DQ-LF-Z	2 MHz	3.8 V	Step-Down	No	Adjustable	1.5 A	0.8 V	Buck	55 V	10-VFDFN Exposed Pad	52 V	Surface Mount	3 mm	10-QFN	3 mm	125 °C	-40 °C	1	Positive

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MPQ4559DQ-AEC1-LF-Z | Datasheet