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Our high-efficiency DC-DC switching regulator ICs generate less heat, consume less current and require less board space than other solutions, enabling more robust operation and longer battery life. Switching regulator circuits use a power switch, an inductor, and a diode to transfer energy from input to output. The basic components of the switching circuit can be rearranged to form a step-down (buck) converter, a step-up (boost) converter, or an inverter (flyback). Feedback and control circuitry can be added to regulate the energy transfer and maintain a constant output. Our wide selection of DC-DC converters offer high switching frequencies, very efficient internal switching elements, wide input voltage ranges, and built-in circuit protection to support a broad range of applications.

Step-Down (Buck)

Find Maxim’s Step-Down (Buck) Switching Regulators. Optimize your applications with Maxim Integr...

Inverting

Switching regulators ICs convert input voltages into higher output voltages.

Digital Power

Maxim Integrated digital power products are highly efficient DC-regulators that provide extensiv...

Power Modules

Maxim Integrated's Himalaya Power Modules integrate most of the components needed for a power su...

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Design Solution Mobile Power Selector Guide

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Technical Documents Boost/Step-Up

Technical Documents Buck-Boost/Step-Down

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Technical Documents Inverter/Negative Output

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Featured Videos


High Power Density Solutions for AI & Server
6:18 June 03, 2021


How to Properly Place Input and Output Capacitors in Your Power Supply Layout
7:46 April 30, 2021


Advantages of Using the MAX77816 Buck-Boost Regulator for Seamless Power Supply Transitions
05:59 February 22, 2019


How to Design a Power Supply in Five Minutes or Less with the EE-Sim® Design Tool
6:28 May 26, 2018


nanoPower Boost Converter Demo
5:26 March 10, 2017


EE-Sim Webscope Waveform Viewer
3:03 January 10, 2017

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Featured Blogs

Featured Products

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MAX77801

The MAX77801 is a high-current, high-efficiency buck-boost targeted to mobile applications that use a Li-ion battery or similar chemistries. The MAX77...
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MAX77596

This small, synchronous buck converter with integrated switches can deliver up to 300mA with input voltages from 3.5V to 24V, while using only 1.1μA q...
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MAX77231

Compact boost with only 35µVRMS ripple and noise.
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MAX17242

Reliable Operation (42V Input Transient Protection), Long Battery Life (15µA IQ) and EN55022 EMI Performance.

Latest Products

MAX20411 Automotive High-Efficiency Single 16A/22A/ 30A/40A Step-Down Converter Family

The MAX20411 is a family of high-efficiency, synchronous step-down converters that operate with ...
  • High-Efficiency DC-DC Converter
  • Up to 40A Peak Output Current:
    • MAX20411A: 16A
    • MAX20411B: 22A
    • MAX20411C: 30A
    • MAX20411D: 40A
  • Differential Remote Voltage Sensing
  • 3.0V to 5.5V Operating Supply Voltage
  • I²C Controlled Output Voltage:
    • 0.5V to 1.275V in 6.25mV Steps
  • Excellent Load Transient Performance
  • Advanced Programmable Compensation
    • MAXQ™ Power Architecture
    • Hybrid Load Line and Integrator Options
  • 2.1MHz or 1.05MHz Operation
  • As Low as ±0.75% Output Voltage Accuracy
  • RESET Output
  • Current Mode, Forced PWM Operation
  • ASIL D Compliant:
    • Redundant Reference
    • BIST Diagnostics
    • PEC on I²C
    • Programmable OV/UV with ±1% Accuracy
  • Overtemperature and Short-Circuit Protection
  • 3.5mm x 5mm 21-Pin Side-Wettable FC2QFN
  • AEC-Q100 Qualified
  • -40°C to +125°C Grade 1 Automotive Temperature Range

MAX20754 Dual-Output, Configurable Multiphase Power-Supply Controller with PMBus Interface and Internal Buck Converter

The MAX20754 is a PMBus™-compatible, dualoutput, configurable multiphase power-supply controller...
  • Versatile and Flexible Controller
    • Generates Up to Six PWM Signals
    • Single- or Dual-Voltage Output with Flexible Phase Assignment
    • 0.5V to 2.0V Output-Voltage Range (MAX20754ETMA1+)
    • 0.25V to 2.0V Output-Voltage Range (MAX20754ETMA2+)
    • 4.5V to 16V Input-Voltage Range
    • 300kHz to 800kHz Switching Frequency Range
  • High-Power Density in a Small Overall Solution Size
    • Supports Coupled-Inductor Technology
    • Advanced Modulation Scheme Improves Transient Response
    • High-Loop Bandwidth Reduces Output-Capacitance Requirements
    • 48-Pin (7mm x 7mm) TQFN Package
    • Phase-Current Steering for Thermal Balancing
    • Efficient Integrated Internal Switching Regulator Powers Controller and Power Stages
  • Simple System Configuration
    • Four External Resistors Set Output Voltage, Bus Address, Switching Frequency, and Current Limit
  • Comprehensive PMBus Configuration, Control, and Telemetry
    • Compatible with PMBus Standard, Revision 1.3
    • 10kHz to 1MHz Bus Speed
    • PMBus Command Settings Stored in Nonvolatile Memory
    • Accurate Current, Voltage, and Temperature Reporting

MAX38803 Integrated, Step-Down Switching Regulators with Selectable Applications Configurations

The MAX38802/MAX38803 are fully-integrated, highly efficient switching regulators for applicatio...
  • High-Efficiency Solution
    • Up to 97% Peak
    • Up to 87% Full-Load
    • Up to 96% Light-Load Efficiency at 1A with DCM Enabled
  • Flexible Design Allows Early PCB Definition
    • Footprint Compatible with MAX38800 (9A) and MAX38801 (15A)
    • Programmable Switching Frequency Up to 1MHz
    • Programmable Soft-Start and STAT Delay Timings
    • Programmable Reference Voltage with External Input Option
    • Programmable Positive and Negative OCP Limit
  • Advanced Architecture, Protection and Reporting Guarantees Reliable Designs
    • Analog Current or Temperature Reporting
    • Differential Remote Sense with Open-Circuit Detection
    • Fast Transient Response with Quick-PWM™ Architecture
    • Percentage-Based Output Power Good and OVP
    • Open-Drain Status Indicator (STAT) Pin
    • Input Undervoltage and Overvoltage Lockout
    • Adaptive Dead Time Control
  • Saves Board Space
    • Integrated Boost Switch
    • 27-Bump WLCSP (2.2mm x 3.8mm) Footprint
    • Operation Using Ceramic Input and Output Capacitors

MAX38802 Integrated, Step-Down Switching Regulators with Selectable Applications Configurations

The MAX38802/MAX38803 are fully-integrated, highly efficient switching regulators for applicatio...
  • High-Efficiency Solution
    • Up to 97% Peak
    • Up to 87% Full-Load
    • Up to 96% Light-Load Efficiency at 1A with DCM Enabled
  • Flexible Design Allows Early PCB Definition
    • Footprint Compatible with MAX38800 (9A) and MAX38801 (15A)
    • Programmable Switching Frequency Up to 1MHz
    • Programmable Soft-Start and STAT Delay Timings
    • Programmable Reference Voltage with External Input Option
    • Programmable Positive and Negative OCP Limit
  • Advanced Architecture, Protection and Reporting Guarantees Reliable Designs
    • Analog Current or Temperature Reporting
    • Differential Remote Sense with Open-Circuit Detection
    • Fast Transient Response with Quick-PWM™ Architecture
    • Percentage-Based Output Power Good and OVP
    • Open-Drain Status Indicator (STAT) Pin
    • Input Undervoltage and Overvoltage Lockout
    • Adaptive Dead Time Control
  • Saves Board Space
    • Integrated Boost Switch
    • 27-Bump WLCSP (2.2mm x 3.8mm) Footprint
    • Operation Using Ceramic Input and Output Capacitors

MAX17291 High-Voltage, 1A Micropower Boost Converter with Short-Circuit Protection and True Shutdown

The MAX17291 is a low quiescent current boost (step-up) DC-DC converter with a 1A peak inductor ...
  • 28μA Quiescent Supply Current from Input
  • Output Short-Circuit Protection
  • Overtemperature Protection
  • Constant Frequency in CCM
  • True Shutdown Mode
    • 0.05μA Shutdown Current
    • No Reverse Current from OUT
  • 91% Peak Efficiency
  • 1.8V to 5.5V Input Range
  • 5.5V to 20V Output Voltage Range
  • 1A Peak Inductor Current Limit
  • Multiple Package Options
    • 1.27mm x 0.87mm, 6-Bump (3 x 2), 0.4mm Pitch WLP
    • 2mm x 2mm, 8-Pin TDFN
  • -40°C to +125°C Operating Temperature Range
MAXM38643 Tiny, 1.8V to 5.5V Input, 330nA I<sub>Q</sub>, 600mA nanoPower Buck Module

MAXM38643 Tiny, 1.8V to 5.5V Input, 330nA IQ, 600mA nanoPower Buck Module

  • Extends Battery Life
    • 330nA Ultra-Low Quiescent Supply Current
    • 1nA Shutdown Current
    • 96% Peak Efficiency and over 88% at 10μA
  • Easy to Use – Addresses Popular Operations
    • 1.8V to 5.5V Input Range
    • Single Resistor-Adjustable VOUT from 0.7V to 3.3V
    • Factory-Preprogrammed VOUT from 0.5V to 5V
    • ±1.75% Output Voltage Accuracy
    • Up to 600mA Load Current Capability
  • Protects System in Multiple Use Cases
    • Reverse-Current Blocking in Shutdown
    • Active Discharge Feature
  • Reduces Size and Increases Reliability
    • -40°C to +85°C Temperature Range
    • 2.1mm x 2.6mm, 10-Lead eMGA Package
MAXM17225 Tiny, 0.4V to 5.5V Input, 300nA I<sub>Q</sub>, nanoPower Boost Module with True Shutdown

MAXM17225 Tiny, 0.4V to 5.5V Input, 300nA IQ, nanoPower Boost Module with True Shutdown

The MAXM17225 is a nanoPower, ultra-low-IQ (300nA) boost module offered in a tiny eMGA package. ...
  • Extends Battery Life
    • 300nA Ultra-Low Quiescent Current
    • 0.5nA Shutdown Current
    • 95% Peak Efficiency
    • True Shutdown
      • Output Disconnects from Input
      • Zero Forward/Reverse Current from VIN,VOUT
  • Easy to use–Addresses Popular Operation
  • VIN: 5.5V Down to 0.4V
    • Minimum Startup Voltage of 0.88V
    • Single Resistor-Adjustable VOUT from 1.8V to 5V
    • VOUT Selection Resolution: In 100mV Steps
    • 1A Peak Inductor Current Limit
    Robust Performance Features Include
    • Internal Current Limit
    • Integrated Soft-Start
    • PFM Control Scheme for Higher Efficiency at Light Load Operation
  • Reduced Size and Increased Reliability
    • 2.1mm x 2.6mm, 10-Lead eMGA Package
    • Operating Temperature Range -40°C to +125°C

MAX17227J 400mV to 5.5V Input, 500mA nanoPower Boost Converter with Short-Circuit Protection and Automatic Pass-Through Mode

The MAX17227J is a nanoPower boost converter capable of delivering a load up to 500mA peak induc...
  • 350nA Quiescent Supply Current
  • Output Short-Circuit Protection
  • Automatic Pass-Through Mode
    • Overcurrent and Overtemperature Protected
  • 95% Peak Efficiency, 89% or Higher at 500μA
  • Typical 300mA Output Current at 5.0V (VIN > 3.6V)
  • 400mV to 5.5V Input Voltage Range
  • 880mV Minimum Startup Voltage
  • Single Resistor-Adjustable Output Voltage
    • 2.3V to 5.2V Output Voltage Range with 100mV Steps
    • 5.4V Output Voltage Setting Available
  • 500mA Peak Inductor Current Limit
  • Active Discharge Feature
  • Thermal Shutdown Protection
  • Multiple Package Options:
    • 1.58mm x 0.89mm, 0.4mm Pitch, 6-Bump (3 x 2) WLP
    • 2mm x 2mm, 8-Pin TDFN
  • -40°C to +125°C Operating Temperature Range

MAX77540 16VIN/6A, Dual-Phase High-Efficiency Buck Converter

The MAX77540 is a high-efficiency step-down converter with two 3A switching phases. It uses an a...
  • 4V to 16V Input Voltage Range
  • 0.5V to 5.2V Output Voltage Range
  • Resistor Configurable Default VOUT
  • Two 3A Bucks (1Φ) or One 6A Buck (2Φ)
  • ±0.5% VOUT Accuracy (Default VOUT at 25°C)
  • 94% Peak Efficiency (7.6VIN, 3.3VOUT, 1MHz)
  • Auto SKIP/PWM and Low-Power Mode
  • 98% Max. Duty Cycle Dropout Operation
  • Programmable Soft-Start/Stop and Ramp-Up/Down Slew Rates
  • Pre-Biased Startup and Active Output Discharge
  • Programmable Inductor Peak Current Limits
  • 0.5/1.0/1.6MHz Nominal Switching Frequency
  • Spread-Spectrum Modulation
  • Internal/External Frequency Tracking
  • Ultrasonic Mode
  • Dedicated EN, POK, and FPWM Pins
  • Undervoltage lockout (UVLO), Thermal Shutdown, and Short-Circuit Protection
  • High-Speed I2C I/F with 3-Slave Address Options
  • 30-WLP (2.51mm x 2.31mm) and 24-FC2QFN (3mm x 3mm) Packages
  • Less than 55mm2 Total Solution Size

MAXM17626 2.7V to 5.5V, 600mA Himalaya uSLIC Step-Down Power Modules

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller...
  • Easy to Use
    • 2.7V to 5.5V Input
    • Adjustable 0.8V to 3.3V Output
    • ±1% Feedback Accuracy
    • Up to 600mA Output Current
    • Fixed 2MHz or 4MHz Operation
    • 100% Duty-Cycle Operation
    • Internally Compensated
    • All Ceramic Capacitors
  • High Efficiency
    • Selectable PWM- or PFM- Mode of Operation
    • Shutdown Current as low as 0.1μA (typ)
  • Flexible Design
    • Internal Soft-Start and Prebias Startup
    • Open-Drain Power Good Output (PGOOD Pin)
  • Robust Operation
    • Overtemperature Protection
    • -40°C to + 125°C Ambient Operating Temperature/-40°C to +150°C Junction Temperature
  • Rugged
    • Passes Drop, Shock, and Vibration Standards: JESD22-B103, B104, B111

Tools

Featured Reference Designs

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MAXREFDES108

This non-isolated PoE powered device design combines a PD controller and buck converter on a 1.2...
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MAXREFDES121

Isolated, industrial power-supply reference design with an efficient active-clamp topology desig...
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MAXM17532EVKIT

Integrated power solution providing 5V from a wide input range of 10V to 42V with up to 100mA of...
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MAXM15462EVKIT

Integrated power solution providing 3.3V from a wide input range of 4.5V to 42V with up to 300mA...

Latest Reference Designs

MAXREFDES1238: Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform

In this design a single 12V input supplies a circuit which outputs 6 separate rails ranging from...

MAXREFDES175#: Remote Phantom Supply BeagleBone Black Cape

A complete automotive, high-voltage, 8-channels remote supply BeagleBone Black cape reference de...

MAXREFDES1194: Five-Output, No-Opto Flyback DC-DC Converter Using the MAX17690

The MAXREFDES1194 is a no-opto flyback DC-DC power supply that delivers five outputs from a 6V t...

MAXREFDES1200: Two-Layer Board, 3.3V/2.5A, Synchronous Buck DC-DC Converter Using the MAX17244

The MAXREFDES1200 demonstrates how to build a lowcost buck DC-DC converter using the step-down c...

MAXREFDES1131: 0.72V/12A Supply for Xilinx Ultrascale+ FPGAs

The MAXREFDES1131 provides the internal core voltage (VCCINT) for Xilinx Ultrascale+ FPGAs. This...

MAXREFDES32#: 2-Channel Analog Input/Analog Output with Flyback DC-DC

MAXREFDES32# subsystem reference design is a high-speed, high-accuracy, 16-bit, 2-channel simult...

MAXREFDES71#: 2-Channel Analog Input/Analog Output with Transformer Driven Power

MAXREFDES71# subsystem reference design is a high-speed, high-accuracy, 16-bit, 2-channel simult...

Palo Verde (MAXREFDES33#): Step-Down Converter

The Palo Verde (MAXREFDES33#) subsystem design features a highly efficient, synchronous DC-DC co...

Fit 1 Vital Signs Monitoring Shirt

The "Fit" vital signs monitoring shirt allows medical professionals and fitness enthusiasts to e...

Layout Guidelines for the MAX16974/MAX16975/MAX16976 DC-DC Converters

Optimize the layout of the MAX16974/MAX16975/MAX16976 high-performance DC-DC converters, standar...

Supply-Chopped Dimming Control Boosts LED Driver Efficiency and Keeps Inrush Currents to a Minimum

LED driver reference design drives a single LED string with forward voltages up to 60V and allow...

Adding Three Power MOSFETs Lets a Single Step-Down Converter Drive RGB LEDs in Projectors

Reference design (RD) for low-power projector drives RGB high-brightness (HB) LEDs with up to 10...

Reference Design for a High-Input-Voltage, High-Output-Current Buck Controller Using the MAX15046

This reference design presents a circuit for using a step-down power-supply controller for high-...

Designing a Buck-Boost LED Driver Using the MAX16834

The MAX16834 current-mode high-brightness LED driver is featured, and the MAX16834 EV (evaluatio...

Boost Backlight LED Driver

A LED display backlight driver using a boost switching power supply and linear current sinks for...

Reference Design for a Signal-Lamp LED Driver

A linear LED driver for 6 strings of 4 LEDs at a current of 350mA per string. Uses the MAX16836.

Offline LED Driver Reference Design

An 27 LED driver intended to run directly off a 400VDC input.

Reference Design for a 3S3P Rear Combination Lamp (RCL) LED Driver

An LED driver for a Rear Combination Lamp (RCL) using the MAX16823 and external BJTs.

Reference Design for a High-Current Power Supply with Lossless Current Sensing Using the MAX5060

In these days data processing elements are demanding higher currents from power supply for achie...

How to Use the MAX15005 Current-Mode Controller as a Boost Circuit for an Automotive Cold-Crank Condition

Boost application for steping up the battery voltage during cold crank for automotive applicatio...