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.
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 |
Price (USD) | 1ku |
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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 | 1.245 |
40V, 300mA ultra-low quiescent current Step-down regulator 3.3V fixed output | TBD | Buck | 1 | 7 | 40 | 3.3 | 3.3 | 0.3 | 0 - 210 | Peak Current Mode | 70 | 4 | No | Standard | 5 | TSOT | iSim | 0.6514 |
40V, 300mA ultra-low quiescent current Step-down regulator 5V fixed output | TBD | Buck | 1 | 7 | 40 | 5 | 5 | 0.3 | 0 - 380 | Peak Current Mode | 70 | 4 | No | Standard | 5 | TSOT | 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 | 2.008 |
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 | 2.008 |
3.3V, 300mA, Ultra-Low Quiescent Current DC/DC Step-Down Regulator | 2033 Dec | Buck | 1 | 7 | 80 | 3.18 | 3.42 | 0.3 | 0 - 170 | Peak Current Mode | 5 | No | Standard | 5 | TSOT | iSim | 0.606 | |
5V, 300mA, Ultra-Low Quiescent Current DC/DC Step-Down Regulator | 2033 Dec | Buck | 1 | 7 | 80 | 4.75 | 5.15 | 0.3 | 0 - 230 | Peak Current Mode | 5 | No | Standard | 5 | TSOT | iSim | 0.606 | |
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 | 2.008 |
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 | 2.008 |
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 | 2.699 | |
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 | 2.548 | ||
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 | 6.204 | |
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 | 0.9959 | |
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 | 0.9959 |
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 | 0.908 |
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 | 0.7423 | ||
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 | 0.908 |
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 | 1.541 |
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 | 2.079 |
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 | 2.037 | |
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 | 2.701 |
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 | 2.701 |
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 | 2.927 |
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 | 2.474 |
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 | 4.634 | |
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 | 0.7615 | |
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 | 1.025 |
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 | 1.025 | |
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 | 1.347 |
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 | 1.347 | |
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 | 1.435 | |
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 | 2.398 | |
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 | 2.398 | |
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 | 2.814 | |
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 | 5.113 | |
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 | 1.318 | ||
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 | 1.326 | |
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 | 0.95 | |
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 | 1.485 |
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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 | |
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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!