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Switching Regulators 
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/content/maximintegrated/en/products/power/switching-regulators 
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.
Featured Technical Documents
Browse latest application notes by product family:
Technical Documentation
Featured Videos
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
Customer Testimonials
Featured Blogs
Featured Products
MAX77231
Compact boost with only 35µVRMS ripple and noise.
MAX17242
Reliable Operation (42V Input Transient Protection), Long Battery Life (15µA IQ) and EN55022 EMI Performance.
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...
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...
MAX77231
Compact boost with only 35µVRMS ripple and noise.
MAX17242
Reliable Operation (42V Input Transient Protection), Long Battery Life (15µA IQ) and EN55022 EMI Performance.
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...
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...
Latest Products
MAX20029D Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters
The MAX20029/MAX20029B/MAX20029C/MAX20029D power-management ICs (PMICs) integrate four low-volta...
- Quad Step-Down DC-DC Converters with Integrated FETs
- Operate from 3.0V to 5.5V Supply Voltage
- 0.7V to 4.0V Fixed or Adjustable Output Voltage
- 2.2MHz Switching Frequency
- MAX20029/MAX20029C: Up to Four 1.5A Channels
- MAX20029B/MAX20029D: Up to One 3A + Two 1.5A Channels
- Designed to Improve Automotive EMI Performance
- Forced-PWM Operation
- Two Channels 180° Out-of-Phase
- SYNC Input
- Spread-Spectrum Option
- Soft-Start and Supply Sequencing Reduces Inrush Current
- Individual Enable Inputs and Power-Good Outputs to Simplify Sequencing
- OV Input-Voltage Monitoring
- Overtemperature and Short-Circuit Protection
- 28-Pin (5mm × 5mm x 0.8mm) TQFN-EP Package
- -40°C to +125°C Operating Temperature Range
MAX20010E Automotive Single 6A Step-Down Converters
The MAX20010C/MAX20010D/MAX20010E ICs are high-efficiency, synchronous step-down converters that...
- Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
- 3.0V to 5.5V Operating Supply Voltage
- High-Precision Voltage Regulator for Applications Processors
- ±2% Output-Voltage Accuracy
- Differential Remote Voltage Sensing
- I2C-Controlled Output Voltage of 0.5V to 1.27V in 10mV Steps, or 0.625V to 1.5875V in 12.5mV Steps
- Excellent Load-Transient Performance
- Low-Noise Feature Reduces EMI
- 2.2MHz Operation
- Spread-Spectrum Option
- Frequency-Synchronization Input/Output
- Current-Mode, Forced-PWM, and Skip Operation
- Robust for the Automotive Environment
- PGOOD Output
- Overtemperature and Short-Circuit Protection
- 20-Pin (4mm × 4mm) TQFN with an Exposed Pad
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Qualified
MAX20049 Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules
The MAX20049 is a dual step-down converter IC with two low-dropout regulators (LDOs), providing ...
- Small Solution Size
- 16-Pin Side-Wettable (3mm x 3mm) TQFN with an Exposed Pad
- Low On-Time Architecture Eliminates the Need for Cascading Bucks
- Wide 3.5V to 17V Input Voltage Range for Power- Over-Coax Cables
- Fixed Output-Voltage Options
- EMI Solutions
- Optional Spread-Spectrum Frequency Modulation
- Pinout Placement Allows for Tight PCB Layout of Switching Nodes
- Self-Protected and Robust
- Overvoltage and Undervoltage Monitoring, Overvoltage Protection, Thermal Shutdown, and Short- Circuit Protection
- 500mV Input Hysteresis Allows for Long, Low-Cost Cables During Slow Starts
- Automotive Ready
- Automotive Temperature Range
- AEC-Q100 Qualified
MAX17220 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17222 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17224 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17225 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17223 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17221 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX77597 36V, 300mA, Buck Converter with 1.1μA IQ
The MAX77597 is a small, synchronous buck converter with integrated switches. The device is desi...
- Flexible Power for Systems That Require a Wide Input Voltage Range
- VIN Range: 3.5V to 36V
- Up to 300mA Output Current
- Fixed 3.3V Output Voltage
- 98% (Max) Duty Cycle Operation with Low Dropout
- Operates from 5V, 12V, or 20V USB Type-C Input Power
- Operates from 2S, 3S, or 4S Li-Ion Battery
- Minimizes Power Consumption and Extends Battery Life
- 1.1µA Quiescent Current
- 86% Peak Efficiency at 12VIN, 3.3VOUT
- Minimizes Solution Size
- 1.7MHz Operating Frequency
- Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN Package
- Robust Solution
- Short-Circuit, Thermal Protections
- 6.67ms Internal Soft-Start Minimizes Inrush Current
- Current-Mode Control Architecture
- Up to 42V Input Voltage Tolerance
MAX20029D Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters
The MAX20029/MAX20029B/MAX20029C/MAX20029D power-management ICs (PMICs) integrate four low-volta...
- Quad Step-Down DC-DC Converters with Integrated FETs
- Operate from 3.0V to 5.5V Supply Voltage
- 0.7V to 4.0V Fixed or Adjustable Output Voltage
- 2.2MHz Switching Frequency
- MAX20029/MAX20029C: Up to Four 1.5A Channels
- MAX20029B/MAX20029D: Up to One 3A + Two 1.5A Channels
- Designed to Improve Automotive EMI Performance
- Forced-PWM Operation
- Two Channels 180° Out-of-Phase
- SYNC Input
- Spread-Spectrum Option
- Soft-Start and Supply Sequencing Reduces Inrush Current
- Individual Enable Inputs and Power-Good Outputs to Simplify Sequencing
- OV Input-Voltage Monitoring
- Overtemperature and Short-Circuit Protection
- 28-Pin (5mm × 5mm x 0.8mm) TQFN-EP Package
- -40°C to +125°C Operating Temperature Range
MAX20010E Automotive Single 6A Step-Down Converters
The MAX20010C/MAX20010D/MAX20010E ICs are high-efficiency, synchronous step-down converters that...
- Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
- 3.0V to 5.5V Operating Supply Voltage
- High-Precision Voltage Regulator for Applications Processors
- ±2% Output-Voltage Accuracy
- Differential Remote Voltage Sensing
- I2C-Controlled Output Voltage of 0.5V to 1.27V in 10mV Steps, or 0.625V to 1.5875V in 12.5mV Steps
- Excellent Load-Transient Performance
- Low-Noise Feature Reduces EMI
- 2.2MHz Operation
- Spread-Spectrum Option
- Frequency-Synchronization Input/Output
- Current-Mode, Forced-PWM, and Skip Operation
- Robust for the Automotive Environment
- PGOOD Output
- Overtemperature and Short-Circuit Protection
- 20-Pin (4mm × 4mm) TQFN with an Exposed Pad
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Qualified
MAX20049 Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules
The MAX20049 is a dual step-down converter IC with two low-dropout regulators (LDOs), providing ...
- Small Solution Size
- 16-Pin Side-Wettable (3mm x 3mm) TQFN with an Exposed Pad
- Low On-Time Architecture Eliminates the Need for Cascading Bucks
- Wide 3.5V to 17V Input Voltage Range for Power- Over-Coax Cables
- Fixed Output-Voltage Options
- EMI Solutions
- Optional Spread-Spectrum Frequency Modulation
- Pinout Placement Allows for Tight PCB Layout of Switching Nodes
- Self-Protected and Robust
- Overvoltage and Undervoltage Monitoring, Overvoltage Protection, Thermal Shutdown, and Short- Circuit Protection
- 500mV Input Hysteresis Allows for Long, Low-Cost Cables During Slow Starts
- Automotive Ready
- Automotive Temperature Range
- AEC-Q100 Qualified
MAX17220 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17222 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17224 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17225 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17223 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX17221 400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
The MAX17220–MAX17225 is a family of ultra-low quiescent current boost (step-up) DC-DC converter...
- 300nA Quiescent Supply Current Into OUT
- True Shutdown Mode
- 0.5nA Shutdown Current
- Output Disconnects from Input
- No Reverse Current with VOUT 0V to 5V
- 95% Peak Efficiency
- 400mV to 5.5V Input Range
- 0.88V Minimum Startup Voltage
- 1.8V to 5V Output Voltage Range
- 100mV/Step
- Single 1% Resistor Selectable Output
- 225mA, 500mA, and 1A Peak Inductor Current Limit
- MAX17220/MAX17221: 225mA ILIM
- MAX17222/MAX17223: 500mA ILIM
- MAX17224/MAX17225: 1A ILIM
- MAX17220/MAX17222/MAX17224 Enable Transient Protection (ETP)
- 2mm x 2mm 6-Pin µDFN
- 0.88mm x 1.4mm 6-Bump WLP (2 x 3, 0.4mm Pitch)
MAX77597 36V, 300mA, Buck Converter with 1.1μA IQ
The MAX77597 is a small, synchronous buck converter with integrated switches. The device is desi...
- Flexible Power for Systems That Require a Wide Input Voltage Range
- VIN Range: 3.5V to 36V
- Up to 300mA Output Current
- Fixed 3.3V Output Voltage
- 98% (Max) Duty Cycle Operation with Low Dropout
- Operates from 5V, 12V, or 20V USB Type-C Input Power
- Operates from 2S, 3S, or 4S Li-Ion Battery
- Minimizes Power Consumption and Extends Battery Life
- 1.1µA Quiescent Current
- 86% Peak Efficiency at 12VIN, 3.3VOUT
- Minimizes Solution Size
- 1.7MHz Operating Frequency
- Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN Package
- Robust Solution
- Short-Circuit, Thermal Protections
- 6.67ms Internal Soft-Start Minimizes Inrush Current
- Current-Mode Control Architecture
- Up to 42V Input Voltage Tolerance
Tools
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