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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...

Featured Technical Documents

Design Solution Mobile Power Selector Guide

Browse latest application notes by product family:

Technical Documents Boost/Step-Up

Technical Documents Buck-Boost/Step-Down

Technical Documents Buck/Step-Down

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
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EE-Sim Webscope Waveform Viewer
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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
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
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

MAX20408 Automotive 36V, 8A/10A Fully-Integrated Buck Converter with 10μA Quiescent Current and Dual-Phase Capability

The MAX20408/MAX20410 ICs are tiny synchronous buck converters with integrated high-side and low...
  • High-Power DC/DC Converter in Small Solution Size
    • 3.0V to 36V Operating Input Voltage Range
    • Integrated High-Side and Low-Side FETs
    • 8A/10A Maximum Output Current
    • 400kHz and 2.1MHz Fixed Frequency Options
    • Fixed 2.5ms Soft-Start Time
    • 34ns Minimum On Time
    • Programmable 0.8V to 10V Output with 400kHz,0.8V to 6V Output with 2.1MHz, or Fixed Output Options
    • ±1.8% Output Voltage Accuracy
    • Symmetric and Balanced SUP and PGND Pinout Placement for Superior EMI Performance
    • Thermally-Enhanced 3.5mm x 3.75mm, 17-Pin FC2QFN Package
  • High Efficiency at All Load Range
    • 10μA Quiescent Current in Skip Mode
    • Up to 94.3% Efficiency at 12VIN/5VOUT/2.1MHz
    • Up to 95.6% Efficiency at 12VIN/5VOUT/400kHz
  • Dual-Phase Operation up to 20A Load Capability
    • Frequency Synchronization Input/Output
    • 180º Out-of-Phase Between Master and Slave
    • Dynamic Current Sharing
  • Robust for Automotive Environment
    • Forced PWM and Skip-Mode Operation
    • 99% Duty Cycle Operation with Low DropoutVoltage
    • Supports 42V Load Dump
    • Spread-Spectrum Option
    • Power Good Indicator
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
  • Scalable Power Solution
    • Footprint Compatible with MAX20404/MAX20405/MAX20406

MAX20405 Automotive, 36V, 4A/5A/6A Fully Integrated Synchronous Buck Converter

The MAX20404/MAX20405/MAX20406 ICs are tiny synchronous buck converters with integrated high-sid...
  • Multiple Functions for Small Size
    • Operating VIN Range of 3V to 36V
    • 10µA Quiescent Current in Skip Mode
    • Synchronous DC-DC Converter with Integrated FETs
    • 400kHz, 2.1MHz, and 3MHz Fixed Frequency Options
    • Fixed 2.5ms Internal Soft-Start
    • Programmable 0.8V to 10V Output, or 3.3V and 5.0V Fixed-Output Options Available
    • 3.5mm x 3.75mm 17-Pin FC2QFN
    • Symmetrical package offers superior EMI performance
  • Dual-Phase Capablity
    • Can be used in Dual-Phase Configuration for High Power Design
    • Dynamic Current Sharing
    • Low Iq Operation Capability in Dual Phase
  • High Precision
    • ±1% Output-Voltage Accuracy in FPWM Mode at No Load
    • Precise Output Voltage Monitoring with PGOOD
  • Robust for the Automotive Environment
    • Forced-PWM and Skip Mode Operation
    • 99% Duty-Cycle Operation with Low Dropout
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Junction Operating Temperature Range
    • 42V Load-Dump Tolerant
    • AEC-Q100 Qualified

MAX20410 Automotive 36V, 8A/10A Fully-Integrated Buck Converter with 10μA Quiescent Current and Dual-Phase Capability

The MAX20408/MAX20410 ICs are tiny synchronous buck converters with integrated high-side and low...
  • High-Power DC/DC Converter in Small Solution Size
    • 3.0V to 36V Operating Input Voltage Range
    • Integrated High-Side and Low-Side FETs
    • 8A/10A Maximum Output Current
    • 400kHz and 2.1MHz Fixed Frequency Options
    • Fixed 2.5ms Soft-Start Time
    • 34ns Minimum On Time
    • Programmable 0.8V to 10V Output with 400kHz,0.8V to 6V Output with 2.1MHz, or Fixed Output Options
    • ±1.8% Output Voltage Accuracy
    • Symmetric and Balanced SUP and PGND Pinout Placement for Superior EMI Performance
    • Thermally-Enhanced 3.5mm x 3.75mm, 17-Pin FC2QFN Package
  • High Efficiency at All Load Range
    • 10μA Quiescent Current in Skip Mode
    • Up to 94.3% Efficiency at 12VIN/5VOUT/2.1MHz
    • Up to 95.6% Efficiency at 12VIN/5VOUT/400kHz
  • Dual-Phase Operation up to 20A Load Capability
    • Frequency Synchronization Input/Output
    • 180º Out-of-Phase Between Master and Slave
    • Dynamic Current Sharing
  • Robust for Automotive Environment
    • Forced PWM and Skip-Mode Operation
    • 99% Duty Cycle Operation with Low DropoutVoltage
    • Supports 42V Load Dump
    • Spread-Spectrum Option
    • Power Good Indicator
    • Overtemperature and Short-Circuit Protection
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100 Qualified
  • Scalable Power Solution
    • Footprint Compatible with MAX20404/MAX20405/MAX20406

MAX20808 Dual-Output 4A, 3MHz, 2.7V–16V Step-Down Switching Regulator

The MAX20808/MAX20808T is a dual-output, fully integrated, highly efficient, step-down DC-DC swi...
  • High-Power Density with Low Component Count
    • Dual-Output or Dual-Phase Operation
    • Single-Supply Operation with Integrated LDO for Bias Generation
    • Optional 2.5V to 5.5V External Bias for Higher Efficiency
    • Compact 3.5mm x 4.6mm, 21-Pin, FC2QFN Package
    • Internal Compensation
  • Wide Operating Range
    • 2.7V to 16V Input Voltage Range
    • 0.5V to 5.8V Output Voltage Range
    • 500kHz to 3MHz Configurable Switching Frequency
    • -40°C to +125°C; Junction Temperature Range
    • Three Pin-Strap Programming Pins to Select Different Configurations
    • Independent Enable and Power Good for Each Output
  • Optimized Performance and Efficiency
    • 92.5% Peak Efficiency with VDDH = 12V, VOUT = 1.8V, and fSW = 1MHz
    • Interleaved 180° Out-of-Phase Operation
    • Selectable AMS to Improve Load Transient
    • Selectable DCM to Improve Light Load Efficiency
    • Active Current Balancing for Dual-Phase Operation (MAX20808 only)

MAX15157D 60V Current-Mode Buck Controller with Lossless Current Sense

The MAX15157D is the evolution of the MAX15157B HV buck controller family. The MAX15157D impleme...
  • Wide Operating Range Reduces Development Time
    • 8V to 60V Input Voltage Range
    • 3V to 0.95 × VIN Output Voltage Range
    • 60kHz to 1MHz Switching Frequency Range
    • Interleaved 1/2/3/4/6/8-Phase Operation
    • -40°C to +125°C Temperature Range
  • Integration Reduces Design Footprint
    • Internal LDO for Bias Supply Generation
    • Synchronization Input
    • Current Monitor Output
    • Internal 2V Precision Reference
    • 2Ω Pullup and 0.6Ω Pulldown Fast Power FET Drivers
    • Accurate MOSFET Dead Time Adaptive Control
  • Robust Fault Protection Improves Quality and Simplifies System Design
    • Adjustable Input Undervoltage Lockout
    • Adjustable Input EN
    • Adjustable Cycle-by-Cycle OvercurrentProtection
    • Input Undervoltage Fault Protection
    • Multiple Levels of Overvoltage Protection
    • Thermal Shutdown
  • Flexible, Simple System Design
    • Adjustable Slope Compensation
    • Discrete Inductor or Compact Coupled Inductor Architecture
    • Lossless RDSON or Resistor Current Sensing
  • Small 5mm × 5mm, 32-Pin TQFN, 0.5mm Pitch
  • 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

    MAX77541 5.5VIN/6A, Dual-Phase High-Efficiency Buck Converter

    The MAX77541 is a high-efficiency step-down converter with two 3A switching phases for single-ce...
    • 2.2V to 5.5V Input Voltage Range
    • 0.3V to 5.2V Output Voltage Range
    • Two 3A Bucks (1Φ) or One 6A Buck (2Φ)
    • ±0.5% VOUT Accuracy (Default VOUT at 25°C)
    • 91% Peak Efficiency (3.8VIN, 1.1VOUT, 1.6MHz)
    • Auto SKIP/PWM Transition and Low-Power Mode
    • Drop-Out Operation with 98% of Max. Duty Cycle
    • Programmable Soft-Start/Soft-Stop and Ramp-up/Ramp-down Slew-rates
    • Prebiased Startup and Active Output Discharge
    • Programmable Inductor Peak Current Limits for Solution Size Optimization
    • 0.5/1.0/1.6MHz Nominal Switching Frequency
    • Spread-Spectrum Modulation for EMI Reduction
    • Internal/External Frequency Tracking
    • Default VOUT and Phase Configuration Setting by RSEL1 and RSEL2
    • I2C Slave ADDR, ILIM, and FSW Preset by RCFG
    • Dedicated ENx, POKx and FPWMx for each Buck
    • UVLO, Thermal Shutdown, and Short-circuit Protection
    • High-Speed I2C Serial I/F
    • Available in 30-WLP (2.51mm x 2.31mm x 0.7mm) and 24-FC2QFN (3mm x 3mm) Packages
    • Less than 55mm2 Total Solution Size with 2520 Inductors

    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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    Integrated power solution providing 5V from a wide input range of 10V to 42V with up to 100mA of...
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    In this design a single 12V input supplies a circuit which outputs 6 separate rails ranging from...

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

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    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...

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

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

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

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

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

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

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

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

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    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.

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

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

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