

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.
Step-Down (Buck)
Step-Up Switching Converters - Boost Switching Regulators
Step-Up or Step-Down (Buck-Boost)
Inverting
Power Modules
Step-Down (Buck)
Step-Up Switching Converters - Boost Switching Regulators
Step-Up or Step-Down (Buck-Boost)
Inverting
Power Modules
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Latest Products
MAX20411 Automotive High-Efficiency Single 16A/22A/ 30A/40A Step-Down Converter Family
- 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-bar 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
- -40°C to +125°C Grade 1 Automotive Temperature Range
MAX17643 4.5V–60V, 2A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
- Reduces External Components and Total Cost
- No Schottky-Synchronous Operation
- Internal Compensation for Any Output Voltage
- All-Ceramic Capacitors, Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 60V Input
- Adjustable 0.9V to (0.9 × VIN) Output
- Up to 2A Peak-Load Current
- 400kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
- Reduces Power Dissipation
- Peak Efficiency of 91.6%
- Auxiliary Bootstrap LDO for Improved Efficiency
- 4.65μA Shutdown Current
- Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Overload Protection
- Adjustable Soft-Start
- Built-In Output-Voltage Monitoring with Active-Low RESET
- Programmable EN/UVLO Threshold
- Monotonic Startup into Prebiased Load
- Overtemperature Protection
- Wide Industrial -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range
- Complies with CISPR22 (EN55022) Class B Conducted and Radiated Emissions
MAX20011C Automotive Single 16A/12A Step-Down Converter
- High-Efficiency DC-DC Converter
- Up to 16A Peak Output Current
- MAX20011C: 16A
- MAX20011D: 12A
- 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
- Programmable Compensation
- 2.2MHz or 1.1MHz Operation
- ±1.5% 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 4mm 17-Pin Side-Wettable FC2QFN
- -40°C to +125°C Grade 1 Automotive Temperature Range
MAX16602 VR13.HC and AI Cores Dual-Output Voltage Regulator Chipset
- High Power Density and Efficiency
- Smart Power-Stage Support: MAX20778/A, MAX20779/A/B/C, MAX20780, MAX20790, MAX16604
- Top-Tier Efficiency (95.6% Peak Efficiency at 1.8VOUT)
- Integrated Input Power Monitor
- Telemetry Through PMBus
- Digitally Programmable Configuration
- Input Voltage, Current, and Power Monitoring
- Power-Stage Temperature Monitoring and Reporting
- Advanced Power Management
- Autonomous Phase-Shedding
- Orthogonal Current Rebalance for Phase-Current Balance During Transients
- Low-Quiescent Current—Improves Light-Load and Standby Efficiency
- Protection Features
- Input and Bias Supply Undervoltage Protection
- Overcurrent Protection
- Critical Fault-Flag Output Pin
MAX20458 36V Boost Controller with 3.5A Synchronous Buck Converter For Automotive Applications
- Meets Stringent OEM Module Power Consumption and Performance Specifications
- 10μA Supply Current with 5V Buck On
- OUT Can Be Either 5V or 3.3V
- 30µA Supply Current with All Regulators On
- Enables Crank-Ready Designs
- Output Voltages in Regulation Through Cold Crank Down to 2V Battery Voltage
- Wide Input Supply Range from 3.5V to 36V
- EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
- 20ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output at 2.1MHz
- Spread-Spectrum Option
- Phase-Locked Loop (PLL) Frequency Synchronization
- Integration and Thermally Enhanced Packages Save Board Space and Cost
- 2.1MHz Buck Converters with Asynchronous Boost Controller
- Current-Mode Controller with Forced Fixed Frequency and Skip Modes
- Thermally Enhanced 5mm x 5mm, 28-Pin TQFN-EP Package
- Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
MAX17227J 400mV to 5.5V Input, 500mA nanoPower Boost Converter with Short-Circuit Protection and Automatic Pass-Through Mode
- 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
MAX8969 Step-Up Converter for Handheld Applications
- Flexible System Integration
- Up to 1A Output Current
- 2.5V to 5.5V Input Voltage Range
- 3.3V to 5.7V Output Voltage Options
- Integrated Protection Increases System Robustness
- Undervoltage Lockout (UVLO)
- Short-Circuit Protection
- Overtemperature Shutdown
- High Efficiency and Low Quiescent Current Extends Battery Life
- Over 90% Efficiency with Internal Synchronous Rectifier
- 60µA IQ in Automatic Track Mode
- 45µA IQ in Step-Up Mode
- 30µA IQ in Track Mode
- 1µA Shutdown Current
- Skip Mode Under Light Load Condition Improves Efficiency
- True Shutdown™ Prevents Current Flow from OUT_ to LX_
- Soft-Start Limits Inrush Current to 480mA
- Small Package and High Frequency Operation Reduce Board Space
- 9-Bump 1.25mm × 1.25mm WLP Package
- 3MHz PWM Switching Frequency
- Small External Components
MAX20754 Dual-Output, Configurable Multiphase Power-Supply Controller with PMBus Interface and Internal Buck Converter
- 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
MAX20057 36V Boost Controller with Two Synchronous Buck Converters (3.5A/2A) for Automotive Applications
- Meets Stringent OEM Module Power Consumption and Performance Specifications
- 10µA Supply Current with 5V Buck On
- 8µA Supply Current with 3.3V Buck On
- 30µA Supply Current with All Regulators On
- Enables Crank-Ready Designs
- Output Voltages in Regulation Through Cold CrankDown to 2V Battery Voltage
- Wide Input-Supply Range from 3.5V to 36V
- EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input-Voltage Range
- 20ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output at 2.1MHz
- Spread-Spectrum Option
- Phase-Locked Loop (PLL) Frequency Synchronization
- Integration and Thermally Enhanced Packages Save Board Space and Cost
- Two 2.1MHz Buck Converters with Asynchronous Boost Controller
- Current-Mode Controller with Forced Fixed-Frequency and Skip Modes
- Thermally Enhanced 5mm x 5mm, 28-Pin TQFN-EP Package
- Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
MAX25202 36V HV Synchronous Boost Controller for Automotive Infotainment Applications
- 20µA Quiescent Current in Skip Mode
- ±1.5% FB Voltage Accuracy
- Output Voltage Range: Fixed or Adjustable Between 3.5V and 60V
- Operates Down to 1.8V After Startup
- Wide Input Supply Range from 4.5V to 36V
- Spread-Spectrum Option
- Frequency-Synchronization Input
- Resistor-Programmable Frequency Between 200kHz and 2.2MHz
- Current-Mode Controllers with Forced-Continuous and Skip Modes
- Thermally Enhanced 16-Pin TQFN-EP Package
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
MAX20411 Automotive High-Efficiency Single 16A/22A/ 30A/40A Step-Down Converter Family
- 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-bar 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
- -40°C to +125°C Grade 1 Automotive Temperature Range
MAX17643 4.5V–60V, 2A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
- Reduces External Components and Total Cost
- No Schottky-Synchronous Operation
- Internal Compensation for Any Output Voltage
- All-Ceramic Capacitors, Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 60V Input
- Adjustable 0.9V to (0.9 × VIN) Output
- Up to 2A Peak-Load Current
- 400kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
- Reduces Power Dissipation
- Peak Efficiency of 91.6%
- Auxiliary Bootstrap LDO for Improved Efficiency
- 4.65μA Shutdown Current
- Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Overload Protection
- Adjustable Soft-Start
- Built-In Output-Voltage Monitoring with Active-Low RESET
- Programmable EN/UVLO Threshold
- Monotonic Startup into Prebiased Load
- Overtemperature Protection
- Wide Industrial -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range
- Complies with CISPR22 (EN55022) Class B Conducted and Radiated Emissions
MAX20011C Automotive Single 16A/12A Step-Down Converter
- High-Efficiency DC-DC Converter
- Up to 16A Peak Output Current
- MAX20011C: 16A
- MAX20011D: 12A
- 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
- Programmable Compensation
- 2.2MHz or 1.1MHz Operation
- ±1.5% 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 4mm 17-Pin Side-Wettable FC2QFN
- -40°C to +125°C Grade 1 Automotive Temperature Range
MAX16602 VR13.HC and AI Cores Dual-Output Voltage Regulator Chipset
- High Power Density and Efficiency
- Smart Power-Stage Support: MAX20778/A, MAX20779/A/B/C, MAX20780, MAX20790, MAX16604
- Top-Tier Efficiency (95.6% Peak Efficiency at 1.8VOUT)
- Integrated Input Power Monitor
- Telemetry Through PMBus
- Digitally Programmable Configuration
- Input Voltage, Current, and Power Monitoring
- Power-Stage Temperature Monitoring and Reporting
- Advanced Power Management
- Autonomous Phase-Shedding
- Orthogonal Current Rebalance for Phase-Current Balance During Transients
- Low-Quiescent Current—Improves Light-Load and Standby Efficiency
- Protection Features
- Input and Bias Supply Undervoltage Protection
- Overcurrent Protection
- Critical Fault-Flag Output Pin
MAX20458 36V Boost Controller with 3.5A Synchronous Buck Converter For Automotive Applications
- Meets Stringent OEM Module Power Consumption and Performance Specifications
- 10μA Supply Current with 5V Buck On
- OUT Can Be Either 5V or 3.3V
- 30µA Supply Current with All Regulators On
- Enables Crank-Ready Designs
- Output Voltages in Regulation Through Cold Crank Down to 2V Battery Voltage
- Wide Input Supply Range from 3.5V to 36V
- EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
- 20ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output at 2.1MHz
- Spread-Spectrum Option
- Phase-Locked Loop (PLL) Frequency Synchronization
- Integration and Thermally Enhanced Packages Save Board Space and Cost
- 2.1MHz Buck Converters with Asynchronous Boost Controller
- Current-Mode Controller with Forced Fixed Frequency and Skip Modes
- Thermally Enhanced 5mm x 5mm, 28-Pin TQFN-EP Package
- Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
MAX17227J 400mV to 5.5V Input, 500mA nanoPower Boost Converter with Short-Circuit Protection and Automatic Pass-Through Mode
- 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
MAX8969 Step-Up Converter for Handheld Applications
- Flexible System Integration
- Up to 1A Output Current
- 2.5V to 5.5V Input Voltage Range
- 3.3V to 5.7V Output Voltage Options
- Integrated Protection Increases System Robustness
- Undervoltage Lockout (UVLO)
- Short-Circuit Protection
- Overtemperature Shutdown
- High Efficiency and Low Quiescent Current Extends Battery Life
- Over 90% Efficiency with Internal Synchronous Rectifier
- 60µA IQ in Automatic Track Mode
- 45µA IQ in Step-Up Mode
- 30µA IQ in Track Mode
- 1µA Shutdown Current
- Skip Mode Under Light Load Condition Improves Efficiency
- True Shutdown™ Prevents Current Flow from OUT_ to LX_
- Soft-Start Limits Inrush Current to 480mA
- Small Package and High Frequency Operation Reduce Board Space
- 9-Bump 1.25mm × 1.25mm WLP Package
- 3MHz PWM Switching Frequency
- Small External Components
MAX20754 Dual-Output, Configurable Multiphase Power-Supply Controller with PMBus Interface and Internal Buck Converter
- 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
MAX20057 36V Boost Controller with Two Synchronous Buck Converters (3.5A/2A) for Automotive Applications
- Meets Stringent OEM Module Power Consumption and Performance Specifications
- 10µA Supply Current with 5V Buck On
- 8µA Supply Current with 3.3V Buck On
- 30µA Supply Current with All Regulators On
- Enables Crank-Ready Designs
- Output Voltages in Regulation Through Cold CrankDown to 2V Battery Voltage
- Wide Input-Supply Range from 3.5V to 36V
- EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input-Voltage Range
- 20ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output at 2.1MHz
- Spread-Spectrum Option
- Phase-Locked Loop (PLL) Frequency Synchronization
- Integration and Thermally Enhanced Packages Save Board Space and Cost
- Two 2.1MHz Buck Converters with Asynchronous Boost Controller
- Current-Mode Controller with Forced Fixed-Frequency and Skip Modes
- Thermally Enhanced 5mm x 5mm, 28-Pin TQFN-EP Package
- Protection Features Improve System Reliability
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection
MAX25202 36V HV Synchronous Boost Controller for Automotive Infotainment Applications
- 20µA Quiescent Current in Skip Mode
- ±1.5% FB Voltage Accuracy
- Output Voltage Range: Fixed or Adjustable Between 3.5V and 60V
- Operates Down to 1.8V After Startup
- Wide Input Supply Range from 4.5V to 36V
- Spread-Spectrum Option
- Frequency-Synchronization Input
- Resistor-Programmable Frequency Between 200kHz and 2.2MHz
- Current-Mode Controllers with Forced-Continuous and Skip Modes
- Thermally Enhanced 16-Pin TQFN-EP Package
- Supply Undervoltage Lockout
- Overtemperature and Short-Circuit Protection