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Buck Regulators (Integrated FETs)
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Renesas offers a wide portfolio of high-performance buck regulators with integrated FETs. 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 Vout of the regulator. 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.
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Product Selection Table
Processing table
PLP |
Topology [Rail 1] |
Outputs (#) |
Input Voltage (Min) [Rail 1] (V) |
Input Voltage (Max) [Rail 1] (V) |
Output Voltage (Min) [Rail 1] (V) |
Output Voltage (Max) [Rail 1] (V) |
Output Current (Max) [Rail 1] (A) |
Switching Frequency Range (Typical) (kHz) |
Control Type |
Peak Efficiency (%) |
IQ [Rail 1] (µA) |
SYNCH Capability |
Qualification Level |
Lead Count (#) |
Pkg. Type |
Simulation Model Available |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Part Number | |||||||||||||||||
| Integrated FET 30V, 5A Synchronous Buck Regulator with Internal Compensation and Programmable Frequency | 2033 Dec | Buck | 1 | 4.5 | 30 | 0.8 | 27 | 5 | 200 - 800 | Peak Current Mode | 90 | 90 | No | Standard | 20, 16 | QFN, TSSOP-EP | iSim |
| Integrated FET 42V, 5A Synchronous Buck Regulator with Internal Compensation and Programmable Frequency | 2033 Dec | Buck | 1 | 4.5 | 42 | 0.8 | 36 | 5 | 200 - 800 | Peak Current Mode | 90 | 90 | No | Standard | 20, 16 | QFN, TSSOP-EP | iSim |
| Integrated FET 60V, 3A Synchronous Buck Regulator with Internal Compensation and Programmable Frequency | 2033 Dec | Buck | 1 | 4.5 | 60 | .8 | 55 | 3 | 200 - 800 | Peak Current Mode | 91 | 90 | No | Standard | 20, 16 | QFN, TSSOP-EP | iSim |
| Integrated FET 75V, 2A Synchronous Buck Regulator with Internal Compensation and Programmable Frequency | 2033 Dec | Buck | 1 | 4.5 | 75 | 0.8 | 65 | 2 | 200 - 800 | Peak Current Mode | 90 | 90 | No | Standard | 20, 16 | QFN, TSSOP-EP | iSim |
| Integrated FET 75V, 3A Asynchronous Buck Regulator with Internal Compensation and Programmable Frequency | N/A | Buck | 1 | 4.5 | 75 | 0.8 | 65 | 3 | 200 - 800 | Peak Current Mode | 87 | 90 | No | Standard | 20, 16 | QFN, TSSOP-EP | iSim |
| Monolithic 1A Step-Down Regulator with Low Quiescent Current | N/A | Buck | 1 | 2.5 | 5.5 | 0.8 | 5.5 | 1 | 1400 | Voltage Mode | 94 | 120 | Yes | Standard | 10 | MSOP | |
| Monolithic 1A Step-Down Regulator | N/A | Buck | 1 | 2.5 | 5.5 | 0.8 | 5.5 | 1 | 1400 | Voltage Mode | 94 | No | Standard | 10 | MSOP | ||
| 6A Dual Synchronous Buck Regulator with Integrated MOSFETs | N/A | Buck | 2 | 3 | 5.5 | 1 | 5.5 | 6 | 1000 | Current Mode | 95 | No | Standard | 50 | QFN | iSim | |
| Compact Synchronous Buck Converter | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 1.5 | 800 - 1200 | Current Mode | 95 | No | Standard | 8 | TDFN | ||
| Compact Synchronous Buck Converter | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 4 | 1.5 | 1640 - 2360 | Current Mode | 95 | No | Standard | 8 | TDFN | ||
| Compact Synchronous Buck Regulators | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 1.5 | 850 - 1150 | Current Mode | 95 | 35 | No | Standard | 8 | TDFN | |
| Compact Synchronous Buck Regulators | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 1.5 | 1700 - 2300 | Current Mode | 95 | 35 | No | Standard | 8 | TDFN | iSim |
| Compact Synchronous Buck Regulators | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 2 | 850 - 1150 | Current Mode | 95 | 35 | No | Standard | 8 | TDFN | iSim |
| Compact Synchronous Buck Converter | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 2 | 800 - 1200 | Current Mode | 95 | No | Standard | 8 | TDFN | ||
| Compact Synchronous Buck Converter | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 4 | 2 | 1640 - 2360 | Current Mode | 95 | No | Standard | 8 | TDFN | ||
| Compact Synchronous Buck Regulators | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 2 | 1700 - 2300 | Current Mode | 95 | 35 | No | Standard | 8 | TDFN | iSim |
| Compact Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 4 | 2 | 1700 - 2300 | Current Mode | 95 | 35 | No | Standard | 8 | TDFN | iSim |
| 3A Synchronous Buck Converter in 2x2 DFN Package | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 1000 | Current Mode | 95 | No | Standard | 8 | DFN | iSim | |
| 3A Synchronous Buck Converter in 2x2 DFN Package | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 2000 | Current Mode | 95 | No | Standard | 8 | DFN | iSim | |
| 3A Synchronous Buck Converter in 2x2 DFN Package | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 1000 | Current Mode | 95 | No | Standard | 8 | DFN | iSim | |
| 3A Synchronous Buck Converter in 2x2 DFN Package | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 2000 | Current Mode | 95 | No | Standard | 8 | DFN | iSim | |
| 1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.8 | 5.5 | 1.5 | 1600 | Current Mode | 95 | 17 | No | Standard | 8 | DFN | iSim |
| 2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.8 | 5.5 | 2 | 1000 | Current Mode | 95 | 40 | No | Standard | 10 | DFN | |
| 3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.8 | 5.5 | 3 | 1000 | Current Mode | 97 | 35 | Yes | Standard | 16 | QFN | iSim |
| 3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.8 | 5.5 | 0.8 | 5.5 | 3 | 1000 | Current Mode | 97 | 35 | Yes | Standard | 16 | QFN | iSim |
| 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.8 | 5.5 | 0.8 | 5.5 | 4 | 1000 | Current Mode | 97 | 35 | Yes | Standard | 16 | QFN | iSim |
| 6A Low Quiescent Current High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 6 | 500 - 4000 | Current Mode | 97 | 70 | Yes | Standard | 20 | QFN | iSim |
| 8A Low Quiescent Current High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 8 | 500 - 4000 | Current Mode | 97 | 70 | Yes | Standard | 20 | QFN | iSim |
| Dual 2A/1.7A Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator | 2033 Dec | Buck | 2 | 2.8 | 5.5 | 0.6 | 5.5 | 2 | 2250 | Current Mode | 97 | 40 | Yes | Standard | 12 | DFN | |
| Compact Synchronous Buck Regulator | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | iSim |
| Compact Synchronous Buck Regulator | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 3 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | |
| Compact Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 4 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | iSim |
| Compact Synchronous Buck Regulator | N/A | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 4 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | |
| Compact Synchronous Buck Regulator | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 5 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | iSim |
| Compact Synchronous Buck Regulator | 2033 Dec | Buck | 1 | 2.7 | 5.5 | 0.6 | 5.5 | 5 | 500 - 4000 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | |
| Compact Synchronous Buck Regulators | N/A | Buck | 1 | 2.5 | 5.5 | 0.6 | 5.5 | 6 | 490 - 4200 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | |
| Compact Synchronous Buck Regulators | 2033 Dec | Buck | 1 | 2.5 | 5.5 | 0.6 | 5.5 | 6 | 490 - 4200 | Current Mode | 95 | 50 | Yes | Standard | 16 | TQFN | |
| Dual 3A Low Quiescent Current High Efficiency Synchronous Buck Regulator | N/A | Buck | 2 | 2.85 | 6 | 0.8 | 6 | 3 | 1000 | Current Mode | 95 | Yes | Standard | 24 | QFN | iSim | |
| Dual 3A Low Quiescent Current High Efficiency Synchronous Buck Regulator | N/A | Buck | 2 | 2.85 | 6 | 0.8 | 6 | 3 | 2500 | Current Mode | 95 | Yes | Standard | 24 | QFN | iSim | |
| Dual 3A 1MHz/2.5MHz High Efficiency Synchronous Buck Regulator | 2033 Dec | Buck | 2 | 2.85 | 6 | 0.8 | 6 | 3 | 1000 | Current Mode | 95 | Yes | Standard | 24 | QFN | iSim | |
| Dual 3A 2.5MHz High Efficiency Synchronous Buck Regulator | 2033 Dec | Buck | 2 | 2.85 | 6 | 0.8 | 6 | 3 | 2500 | Current Mode | 95 | Yes | Standard | 24 | QFN | iSim | |
| Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator | 2033 Dec | Buck | 2 | 2.75 | 5.5 | 0.6 | 5.5 | 0.8 | 2250 | Current Mode | 96 | Yes | Standard | 10 | DFN | ||
| Highly Efficient 3A Synchronous Buck Regulator | N/A | Buck | 1 | 4.5 | 18 | 0.8 | 15 | 3 | 500 | Current Mode | 95 | Yes | Standard | 12 | DFN | iSim | |
| Highly Efficient 3A Synchronous Buck Regulator | N/A | Buck | 1 | 4.5 | 18 | 0.8 | 15 | 3 | 500 | Current Mode | 95 | Yes | Standard | 12 | DFN | iSim | |
| 4.5V to 18V Input, 5A High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 4.5 | 18 | 0.8 | 15 | 5 | 500 | Current Mode | 95 | Yes | Standard | 12 | DFN | iSim | |
| 4.5V to 18V Input, 5A High Efficiency Synchronous Buck Regulator | N/A | Buck | 1 | 4.5 | 18 | 0.8 | 15 | 5 | 500 | Current Mode | 95 | Yes | Standard | 12 | DFN | iSim | |
| 9A, 3.8V to 18V Input, Synchronous Buck Regulator | N/A | Buck | 1 | 3.8 | 18 | 0.6 | 5 | 9 | 300 - 600 | Current Mode | 97 | Yes | Standard | 15 | QFN | iSim | |
| 12A, 3.8V to 18V Input, Synchronous Buck Regulator | N/A | Buck | 1 | 3.8 | 18 | 0.6 | 5 | 12 | 100 - 1000 | Current Mode | 97 | Yes | Standard | 15 | QFN | iSim | |
| 14A, 3.8V to 18V Input, Synchronous Buck Regulator | N/A | Buck | 1 | 3.8 | 18 | 0.6 | 5 | 14 | 300 - 600 | Current Mode | 98 | Yes | Standard | 15 | QFN | iSim | |
| Wide VIN Dual Standard Buck Regulator With 3A/3A Continuous Output Current | 2033 Dec | Buck | 2 | 4.5 | 28 | 0.8 | 28 | 3 | 300 - 2000 | Current Mode | 92 | Yes | Standard | 28 | TQFN | iSim |
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Documentation
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|---|---|---|
| Type | Title | Date |
| Brochure | PDF 19.79 MB 日本語 | |
| White Paper | PDF 1.07 MB | |
| White Paper | PDF 468 KB | |
| White Paper | PDF 526 KB | |
| White Paper | PDF 378 KB | |
| White Paper | PDF 431 KB 简体中文 | |
| Application Note | PDF 279 KB | |
7 items
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Videos & Training
Compact Buck Regulators with COT Control
Renesas’ RAA211230/320 family of synchronous buck regulators are integrated with current mode constant on-time (COT) control which enables fast transient response while shrinking the output filter size. Visit renesas.com/cot-regulators to learn more about how these high performance, compact and pin-compatible COT regulators will make designing your power supply easy!
Video List