MAX17531AUB+

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Analog Devices Inc./Maxim Integrated

4V TO 42V, 50MA, ULTRA-SMALL, HIGH-EFFICIENCY, SYNCHRONOUS STEP-DOWN DC-DC CONVERTER WITH 22ΜA NO-LOAD SUPPLY CURRENT

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MAX17531AUB+

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Analog Devices Inc./Maxim Integrated

4V TO 42V, 50MA, ULTRA-SMALL, HIGH-EFFICIENCY, SYNCHRONOUS STEP-DOWN DC-DC CONVERTER WITH 22ΜA NO-LOAD SUPPLY CURRENT

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Description Specifications Series Pricing CAD Documents

Description

General part information

MAX17531 Series

The MAX17531 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4V to 42V input. The converter can deliver up to 50mA and generates output voltages from 0.8V up to 0.9 x VIN. The feedback (FB) voltage is accurate to within ±1.75% over -40°C to +125°C.The MAX17531 uses peak-current-mode control and can be operated in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) modes.The device is available in a 10-pin (3mm x 2mm) TDFN and 10-pin (3mm x 3mm) µMAX®packages. Simulation models are available.ApplicationsBattery-Powered EquipmentHigh-Voltage LDO ReplacementHVAC and Building ControlIndustrial Sensors and Process Control

Technical Specifications

Parameters and characteristics for this part

Specification	MAX17531AUB+

Current - Output	50 mA
Frequency - Switching (Max)	2.2 MHz
Frequency - Switching (Min)	100 kHz
Function	Step-Down
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 Length	0.118 in
Package Name	10-uMAX/uSOP, 10-TFSOP, 10-MSOP
Package Width	3 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	42 V
Voltage - Input (Min)	4 V
Voltage - Output (Max)	37.8 V
Voltage - Output (Min/Fixed)	0.8 V

MAX17531 Series

Part	Board Type	Supplied Contents	Total Output Count	Output Type	Non-Isolated Output Count	Regulator Topology	Current - Output	Utilized IC / Part	Main Purpose	Contents	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Output	Frequency - Switching	Package Name	Number of Outputs	Mounting Type	Output Configuration	Frequency - Switching (Min)	Frequency - Switching (Max)	Voltage - Output (Max)	Package Length	Package Width	Voltage - Input (Min)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Synchronous Rectifier	Function	Topology	Operating Temperature (Max)	Operating Temperature (Min)	Package / Case
Analog Devices Inc./Maxim Integrated MAX17531AUBEVKIT#	Fully Populated	Board(s)	1	Non-Isolated	1 count	Buck	50 mA	MAX17531	DC/DC Step Down	Board	6 V	42 V	5 VDC	220 kHz
Analog Devices Inc./Maxim Integrated MAX17531ATBEVKIT#	Fully Populated	Board(s)	1	Non-Isolated	1 count	Buck	50 mA	MAX17531	DC/DC Step Down	Board	6 V	42 V	5 VDC	220 kHz
Analog Devices Inc./Maxim Integrated MAX17531AUB+T				Adjustable			50 mA								10-MSOP 10-TFSOP 10-uMAX/uSOP	1	Surface Mount	Positive	100 kHz	2.2 MHz	37.8 V	0.118 in	3 mm	4 V	42 V	0.8 V	Yes	Step-Down	Buck	125 °C	-40 °C
Analog Devices Inc./Maxim Integrated MAX17531AUB+				Adjustable			50 mA								10-MSOP 10-TFSOP 10-uMAX/uSOP	1	Surface Mount	Positive	100 kHz	2.2 MHz	37.8 V	0.118 in	3 mm	4 V	42 V	0.8 V	Yes	Step-Down	Buck	125 °C	-40 °C
Analog Devices Inc./Maxim Integrated MAX17531ATB+T				Adjustable			50 mA								10-TDFN	1	Surface Mount	Positive	100 kHz	2.2 MHz	37.8 V	3 mm	2 mm	4 V	42 V	0.8 V	Yes	Step-Down	Buck	125 °C	-40 °C	10-WFDFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MAX17531AUB+ | Datasheet

UG-5861: EE-SIM Design and Simulation Environment User Guide

MAX17531 Reliability Data