A buck converter, also known as a step-down converter, is a DC/DC power converter that provides voltage step down and current step up. The converter reduces the voltage when the power source has a higher voltage than VIN. A buck converter generally provides the most efficient solution with the smallest external components.
Unsure if a low-powered linear regulator or highly efficient switching regulator is a better option for your design? Learn more about Linear vs. Switching Regulators.
Subcategory |
Temp. Range |
Pkg. Type |
Lead Count (#) |
Pkg. Dimensions (mm) |
Price (USD) | 1ku |
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Part Number | ||||||
Monolithic 1A Step-Down Regulator with Low Quiescent Current | Buck Regulators (Integrated FETs) | -40 to +85°C | MSOP | 10 | 3.0 x 3.0 x 0.86 | 2.699 |
Monolithic 1A Step-Down Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | MSOP | 10 | 3.0 x 3.0 x 0.86 | 2.548 |
Dual Mobile-Friendly PWM Controller with DDR Option | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | QFN, QSOP | 28 | 5.0 x 5.0 x 0.90, 9.9 x 3.9 x 1.55 | |
High-Performance Dual-Output Buck Controller for Notebook Applications | Buck Controllers (External FETs) | -10 to +100°C, -40 to +85°C | TQFN | 28 | 4.0 x 4.0 x 0.75 | 3.394 |
High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers | Buck Controllers (External FETs) | -40 to +85°C | QFN | 32 | 5.0 x 5.0 x 0.90 | |
High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers | Buck Controllers (External FETs) | -40 to +85°C | QFN | 32 | 5.0 x 5.0 x 0.90 | 3.613 |
High-Efficiency, Quad or Triple-Output System Power Supply Controller for Notebook Computers | Buck Controllers (External FETs) | -10 to +100°C | TQFN | 28 | 4.0 x 4.0 x 0.75 | 4.172 |
High-Efficiency, Quad Output System Power Supply Controller for Notebook Computers | Buck Controllers (External FETs) | -10 to +100°C | TQFN | 32 | 5.0 x 5.0 x 0.75 | |
High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers | Buck Controllers (External FETs) | -10 to +100°C | TQFN | 28 | 4.0 x 4.0 x 0.75 | 4.172 |
High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers | Buck Controllers (External FETs) | -40 to +85°C | TQFN | 28 | 4.0 x 4.0 x 0.75 | |
High-Performance Notebook PWM Controller with Audio-Frequency Clamp | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | QFN | 16 | 4.0 x 4.0 x 0.90 | 2.248 |
Integrated XScale Regulator | Buck Controllers (External FETs) | 0 to +70°C | QFN | 20 | 4.0 x 4.0 x 0.90 | 2.672 |
PWM DC/DC Voltage Regulator Controller | Buck Controllers (External FETs) | -10 to +100°C | uTQFN | 16 | 2.6 x 1.8 x 0.00 | |
PWM DC/DC Controller With VID Inputs for Portable GPU Core-Voltage Regulator | Buck Controllers (External FETs) | -10 to +100°C | uTQFN | 16 | 2.6 x 1.8 x 0.00 | 2.022 |
5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | TDFN | 10 | 3.0 x 3.0 x 0.75 | |
5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | TDFN | 10 | 3.0 x 3.0 x 0.75 | |
Single Synchronous Buck Pulse-Width Modulation (PWM) controller | Buck Controllers (External FETs) | 0 to +70°C | SOICN | 8 | 4.9 x 3.9 x 0.00 | 1.45 |
Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller | Buck Controllers (External FETs) | -40 to +85°C | QFN | 16 | 5.0 x 5.0 x 0.90 | 2.262 |
ACPI Regulator/Controller for Dual Channel DDR Memory Systems | Buck Controllers (External FETs) | 0 to +70°C | QFN | 28 | 6.0 x 6.0 x 0.90 | |
ACPI Regulator/Controller for Dual Channel DDR Memory Systems | Buck Controllers (External FETs) | 0 to +70°C | QFN | 28 | 6.0 x 6.0 x 0.90 | 4.486 |
6A Dual Synchronous Buck Regulator with Integrated MOSFETs | Buck Regulators (Integrated FETs) | -10 to +100°C, -40 to +85°C | QFN | 50 | 10.0 x 5.0 x 0.90 | 6.204 |
5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | SOICN | 8 | 4.9 x 3.9 x 0.00 | 1.45 |
5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller | Buck Controllers (External FETs) | -40 to +85°C, 0 to +70°C | SOICN | 8 | 4.9 x 3.9 x 0.00 | 1.45 |
Automotive PWM DC/DC Voltage Controller | Buck Controllers (External FETs) | -40 to +105°C | uTQFN | 16 | 2.6 x 1.8 x 0.00 | 2.599 |
55V Synchronous Buck Controller with Integrated 3A Driver | Buck Controllers (External FETs) | -40 to +125°C | QFN | 24 | 4.0 x 4.0 x 0.90 | 4.008 |
Compact Synchronous Buck Converter | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | |
Compact Synchronous Buck Converter | Buck Regulators (Integrated FETs) | -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | |
Compact Synchronous Buck Regulators | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 0.9959 |
Compact Synchronous Buck Regulators | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 0.9959 |
Compact Synchronous Buck Regulators | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 0.908 |
Compact Synchronous Buck Converter | Buck Regulators (Integrated FETs) | -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 0.7423 |
Compact Synchronous Buck Converter | Buck Regulators (Integrated FETs) | -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | |
Compact Synchronous Buck Regulators | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 0.908 |
Compact Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C, -40 to +125°C | TDFN | 8 | 2.0 x 2.0 x 0.75 | 1.541 |
3A Synchronous Buck Converter in 2x2 DFN Package | Buck Regulators (Integrated FETs) | -40 to +125°C | DFN | 8 | 2.0 x 2.0 x 0.90 | |
3A Synchronous Buck Converter in 2x2 DFN Package | Buck Regulators (Integrated FETs) | -40 to +125°C | DFN | 8 | 2.0 x 2.0 x 0.90 | |
3A Synchronous Buck Converter in 2x2 DFN Package | Buck Regulators (Integrated FETs) | -40 to +125°C | DFN | 8 | 2.0 x 2.0 x 0.90 | |
3A Synchronous Buck Converter in 2x2 DFN Package | Buck Regulators (Integrated FETs) | -40 to +125°C | DFN | 8 | 2.0 x 2.0 x 0.90 | |
1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | DFN | 8 | 2.0 x 3.0 x 0.90 | 2.079 |
2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | DFN | 10 | 3.0 x 3.0 x 0.90 | 2.037 |
3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | QFN | 16 | 4.0 x 4.0 x 0.90 | 2.701 |
3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | QFN | 16 | 4.0 x 4.0 x 0.90 | 2.701 |
4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | QFN | 16 | 4.0 x 4.0 x 0.90 | 3.471 |
6A Low Quiescent Current High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | QFN | 20 | 4.0 x 3.0 x 0.90 | 2.934 |
8A Low Quiescent Current High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | QFN | 20 | 4.0 x 3.0 x 0.90 | |
Dual 2A/1.7A Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | DFN | 12 | 4.0 x 3.0 x 0.90 | 4.634 |
Compact Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | TQFN | 16 | 3.0 x 3.0 x 0.75 | 0.7615 |
Compact Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | TQFN | 16 | 3.0 x 3.0 x 0.75 | 0.7615 |
Compact Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | TQFN | 16 | 3.0 x 3.0 x 0.75 | 1.025 |
Compact Synchronous Buck Regulator | Buck Regulators (Integrated FETs) | -40 to +85°C | TQFN | 16 | 3.0 x 3.0 x 0.75 | 1.025 |
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Type | Title | Date |
White Paper | PDF 1.07 MB | |
White Paper | PDF 468 KB | |
White Paper | PDF 526 KB | |
White Paper | PDF 322 KB 简体中文 | |
White Paper | PDF 378 KB | |
White Paper | PDF 431 KB 简体中文 | |
Application Note | PDF 279 KB | |
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An overview of the industry’s first high-performance 80V dual-phase buck and boost controllers optimized to drive GaN FETs. With high efficiency, tight load regulation and current sharing, these devices deliver ideal power solutions for industrial automation, telecommunications, medical and automotive applications.