Specification	MAX8686EVKIT#

Board Type	Fully Populated
Contents	Board(s)
Current - Output	25 A
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	300 kHz
Main Purpose	DC/DC, Step Down
Outputs and Type	1
Outputs and Type	Non-Isolated, 1 Non-Isolated Output
Regulator Topology	Buck
Supplied Contents	Board(s)
Utilized IC / Part	MAX8686
Voltage - Input [Max]	20 V
Voltage - Input [Min]	4.5 V
Voltage - Output [Max]	5.5 V
Voltage - Output [Min]	0.7 V

MAX8686 Series

Single/Multiphase, Step-Down, DC-DC Converter Delivers Up to 25A Per Phase

Part	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Current - Output	Voltage - Output (Min/Fixed) [Min]	Topology	Voltage - Input (Max) [Max]	Voltage - Output (Max) [Max]	Output Type	Function	Number of Outputs	Voltage - Input (Min) [Min]	Package / Case	Output Configuration	Supplier Device Package	Board Type	Supplied Contents	Outputs and Type	Outputs and Type	Regulator Topology	Contents	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output [Min]	Voltage - Output [Max]	Utilized IC / Part	Main Purpose
Analog Devices Inc./Maxim Integrated MAX8686ETL+	Surface Mount	85 C	-40 ¯C	1 MHz	300 kHz	25 A	0.7 V	Buck	20 V	5.5 V	Adjustable	Step-Down	1	4.5 V	40-WFQFN Exposed Pad	Positive	40-TQFN (6x6)
Analog Devices Inc./Maxim Integrated MAX8686ETL+T	Surface Mount	85 C	-40 ¯C	1 MHz	300 kHz	25 A	0.7 V	Buck	20 V	5.5 V	Adjustable	Step-Down	1	4.5 V	40-WFQFN Exposed Pad	Positive	40-TQFN (6x6)
Analog Devices Inc./Maxim Integrated MAX8686EVKIT#				1 MHz	300 kHz	25 A												Fully Populated	Board(s)	1	1 Non-Isolated Output Non-Isolated	Buck	Board(s)	4.5 V	20 V	0.7 V	5.5 V	MAX8686	DC/DC Step Down

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Box	1	$ 138.32
	N/A	1	$ 143.66
		13	$ 143.66

Description

General part information

MAX8686 Series

The MAX8686 current-mode, synchronous PWM step-down regulator with integrated MOSFETs operates from a 4.5V to 20V input supply and generates an adjustable output voltage from 0.7V to 5.5V while delivering up to 25A per phase.The MAX8686 employs a peak current-mode architecture that operates with an adjustable switching frequency from 300kHz to 1MHz. An adjustable current-limit threshold allows for optimization for different applications with different load currents. Inductor current sense is achieved either using an external sense resistor or using a lossless inductor current-sense scheme. The foldback and hiccup current limit reduces the power dissipation during overload or short-circuit conditions and allows for autorecovery when the fault condition is removed.The MAX8686 offers the ability to start up monotonically even when there is a prebias output voltage. In addition, an adjustable soft-start capability allows for a controlled turn-on. The MAX8686 features an accurate 1% reference and offers a reference input that allows for a higher accuracy reference to be used for voltage tracking applications such as DDR memory.The MAX8686 can be paralleled (up to eight) together in a true multiphase mode to deliver up to 200A of output current. When operating in this mode, this device achieves better than 10% current balance between phases at full load. The MAX8686 supports programmable phase shedding to improve system efficiency during light load conditions.Other features include an enable input and a power-OK (POK) indicator used for power sequencing. The MAX8686 also features latch overvoltage protection that turns on the low-side MOSFET when the output voltage exceeds 120% of the nominal voltage. The MAX8686 is offered in a thermally enhanced 40-pin, 6mm x 6mm TQFN package.ApplicationsDDR MemoryModule ReplacementsNetworking EquipmentPOL Power SuppliesServersTelecom Equipment

Documents

Technical documentation and resources

EE-Sim Design, Simulation Environment Guide

Datasheet