We detect you are using an unsupported browser. For the best experience, please visit the site using Chrome, Firefox, Safari, or Edge. X
microchip-search-icon microchip-user-icon microchip-cart-icon

Search products, tools, resources and more!

Start typing your search term, your results will display here.

Switching Voltage Regulator ICs for Buck Voltage (Step Down)

Offered in Wide Range of Input Voltages to Support Every DC Bus Application

A voltage regulator uses a switching element to transform the supply into an alternating current, which is then converted to a different voltage using capacitors, inductors, and other elements, then converted back to DC. Product portfolio offers wide range of input voltage and power levels to support your applications.

Input Voltage up to 6V

Excellent for battery powered applications and for 5V or 3.3V power bus systems

Input Voltage up to 36V

Ideal for industrial and enterprise applications, 12V and 24V power bus systems

Input Voltage up to 75V

Ideal for Industrial and automotive applications, 24V, 36V, and 48V power bus systems

Featured Products

MIC23030

For Battery-Operated Applications

Offers low Q current with very high efficiency at full load and light load conditions.

MIC24045

For Industrial and Enterprise Applications that Require Single-Stage Power Conversion

Offers very efficiency, with fast transient response, high accuracy output voltage regulation with 5A output current capability. I2C bus allows dynamic voltage scaling and diagnostics control.

MCP16331

For Automotive Applications that Require a Wide Input Voltage Range to Handle High-Voltage Transients

Offers very high power efficiency and output peak current up to 1.2A.

Buck Regulators

View All Parametrics
Product Status Automotive Recommended 5K Pricing Regulator Type No of Outputs Input Voltage Range (V) Output Voltage Range (V) Output Current (mA) Max Quiescent Current (mA) type Switching Frequency (kHz) Switch current (A) type Synchronous Rectifier Operating Temperature Range (°C) Vfb (V) Duty Cycle Max (%) SHUTDOWN Current (µA) (Typ) Light Load Efficiency Mode Alternative Topology Packages
MIC2203 In Production No $1.21 Step Down (Buck) 1 2.3 - 5.5 0.5 - 5.5 300 0.32 1000 0 Yes -40 to 125 0.5 1 0.01 No 10/MSOP, 10/VDFN
MIC23030 In Production No $0.57 Step Down (Buck) 1 2.7 - 5.5 0.62 400 0.021 8000 0 Yes -40 to 125 0.62 80 0.01 Yes 6/UDFN
MIC23031 In Production No $0.58 Step Down (Buck) 1 2.7 - 5.5 0.62 400 0.021 4000 0 Yes -40 to 125 0.62 80 0.01 Yes 6/UDFN
MCP1601 In Production $1.00 Step Down (Buck) 1 2.7 - 5.5 0.9 500 0.119 750 0 Yes -40 to 85 0.8 100 0.05 Yes 8/MSOP
MCP1603 In Production No $0.75 Step Down (Buck) 1 2.7 - 5.5 0.8 - 4.5 500 0.045 2000 0 Yes -40 to 85 0.8 100 0.1 Yes 8/DFN, 5/TSOT
MIC2245 In Production No $1.14 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 500 0.71 4000 Yes -40 to 125 1 1 0.01 No 10/VDFN
MIC2285 In Production No $1.70 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 500 0.79 8000 0 Yes -40 to 125 1 100 0.01 No 10/VDFN
MCP1602 In Production Yes $0.79 Step Down (Buck) 1 2.7 - 5.5 0.8 - 4.5 500 0.045 2000 Yes -40 to 85 0.8 0.05 Yes 8/MSOP, 8/DFN
MIC2202 In Production No $1.21 Step Down (Buck) 1 2.3 - 5.5 0.5 - 5.5 600 0.35 Yes -40 to 125 0.5 1 0.01 No 10/MSOP, 10/VDFN
MIC2204 In Production No $1.44 Step Down (Buck) 1 2.3 - 5.5 1 - 5.5 600 0.32 2000 Yes -40 to 125 1 1 6 No 10/MSOP, 10/VDFN
MIC2205 In Production No $1.14 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 600 0.69 2000 Yes -40 to 125 1 1 0.1 No 10/VDFN
MIC2206 In Production No $1.73 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 600 0.57 2000 Yes -40 to 125 1 1 0.1 No 10/VDFN
MIC2224 In Production No $2.16 Step Down (Buck) 1 2.7 - 5.5 0.3 - 5.5 600 0.36 2000 0 Yes -40 to 125 0 1 1 No 10/VDFN
MIC2285A In Production No $0.77 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 600 0.79 8000 0 Yes -40 to 125 1 100 0.01 No 10/UDFN
MIC23050 In Production No $0.29 Step Down (Buck) 1 2.7 - 5.5 0.72 - 3.3 600 0.021 4000 0 Yes -40 to 125 0 89 0.01 Yes 8/VDFN
MIC23051 In Production No $0.70 Step Down (Buck) 1 2.7 - 5.5 0.72 600 0.02 4000 0 Yes -40 to 125 0 80 0.01 Yes 8/VDFN
MCP1612 In Production $1.16 Step Down (Buck) 1 2.7 - 5.5 0.8 - 5 1000 5 1400 0 Yes -40 to 85 0.8 100 0.01 No 8/MSOP, 8/DFN
MIC23156 In Production No $1.05 Step Down (Buck) 1 2.7 - 5.5 0.7 - 2.4 1500 0.03 3000 0 Yes -40 to 125 0 80 0.1 Yes 16/WLCSP, 17/VQFN
MIC4720 In Production No $0.60 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 1500 0.57 2000 0 No -40 to 125 1 100 2 No 10/MSOP, 12/VDFN
MIC4721 In Production No $0.49 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 1500 0.57 2000 0 No -40 to 125 1 100 2 No 10/MSOP
MIC22200 In Production No $1.16 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 2000 1.2 0 Yes -40 to 125 0.7 1 3.7 No 12/VDFN
MIC22205 In Production No $0.91 Step Down (Buck) 1 2.9 - 5.5 0.7 - 5.5 2000 1.2 800 to 4000 0 Yes -40 to 125 0.7 100 3.7 No 12/VDFN
MIC2267 In Production No $1.31 Step Down (Buck) 1 3 - 5.5 1 - 5.5 2000 1 Yes -40 to 125 1 1 1 No 12/VDFN
MIC23150 In Production No $1.04 Step Down (Buck) 1 2.7 - 5.5 0.95 2000 0.023 4000 Yes -40 to 125 0 0.8 0.01 Yes 8/UDFN
MIC23153 In Production No $1.13 Step Down (Buck) 1 2.7 - 5.5 0.62 2000 0.022 4000 Yes -40 to 125 0.62 0.8 0.01 Yes 10/UDFN
MIC23155 In Production No $1.14 Step Down (Buck) 1 2.7 - 5.5 0.62 2000 0.022 3000 Yes -40 to 125 0.62 0.89 0.01 Yes 10/UDFN
MIC23201 In Production No $0.43 Step Down (Buck) 1 2.7 - 5.5 0.62 - 3.6 2000 1.15 2000 0 Yes -40 to 125 0.62 80 1.34 No 10/VDFN
MIC2207 In Production No $1.23 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 3000 0.57 2000 0 No -40 to 125 1 100 2 No 12/VDFN
MIC23303 In Production No $0.69 Step Down (Buck) 1 2.9 - 5.5 0.62 - 3.6 3000 0.023 4000 0 Yes -40 to 125 0.62 80 0 Yes 12/VDFN
MIC23350 In Production No $1.12 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 3000 0.06 1200 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC23356 In Production No $1.21 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 3000 0.06 600 to 2800 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC4722 In Production No $1.93 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 3000 0.57 2700 No -40 to 125 1 1 2 No 12/VDFN
MIC4723 In Production No $0.65 Step Down (Buck) 1 2.7 - 5.5 1 - 5.5 3000 0.57 2000 0 No -40 to 125 1 100 2 No 10/MSOP, 12/VDFN
MIC4724 In Production No $1.84 Step Down (Buck) 1 3 - 6 1 - 5.5 3000 0.57 2000 No -40 to 125 1 1 2 No 10/MSOP
MIC4930 In Production No $1.02 Step Down (Buck) 1 2.7 - 5.5 0.7 3000 0.8 3300 Yes -40 to 125 0.625 0.01 No 10/VDFN
MIC22400 In Production No $1.16 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 4000 1.3 Yes -40 to 125 0.7 1 5 No 20/TSSOP, 20/VQFN
MIC22405 In Production No $1.68 Step Down (Buck) 1 2.9 - 5.5 0.7 - 5.5 4000 1.3 Yes -40 to 125 0.7 1 5 No 20/VQFN
MIC4950 In Production No $1.38 Step Down (Buck) 1 2.7 - 5.5 0.7 5000 0.8 3300 Yes -40 to 125 0.625 0.01 No 10/VDFN
MIC22600 Mature Product Consider: MIC22705 No $2.00 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 6000 0.85 1000 Yes -40 to 125 0.7 1 5 No 24/TSSOP, 24/VQFN
MIC22601 In Production No $2.28 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 6000 0.85 4000 Yes -40 to 125 0.7 1 5 No 24/VQFN
MIC22602 In Production No $2.23 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 6000 0.85 1000 Yes -40 to 125 0.7 1 5 No 24/VQFN
MIC23603 In Production No $1.51 Step Down (Buck) 1 2.9 - 5.5 0.62 - 3.6 6000 0.024 4000 Yes -40 to 125 0.62 0.8 0.01 Yes 20/VDFN
MIC23650 In Production No $1.41 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 0.06 1200 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC23656 In Production No $1.51 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 0.06 600 to 2800 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC22700 In Production No $2.43 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 7000 0.85 1000 Yes -40 to 125 0.7 1 5 No 24/VQFN
MIC22705 In Production No $2.43 Step Down (Buck) 1 2.9 - 5.5 0.7 - 5.5 7000 0.85 1000 Yes -40 to 125 0.7 1 5 No 24/VQFN
MIC22950 In Production No $3.22 Step Down (Buck) 1 2.6 - 5.5 0.7 - 5.5 10000 1 Yes -40 to 125 0.7 1 5 No 32/VQFN
View All Parametrics
Product Status Automotive Recommended 5K Pricing Regulator Type No of Outputs Input Voltage Range (V) Output Voltage Range (V) Output Current (mA) Max Quiescent Current (mA) type Switching Frequency (kHz) Switch current (A) type Synchronous Rectifier Operating Temperature Range (°C) Vfb (V) Duty Cycle Max (%) SHUTDOWN Current (µA) (Typ) Light Load Efficiency Mode Alternative Topology Packages
MIC4574 In Production No $1.58 Step Down (Buck) 1 4 - 24 1.23 500 5 200 No -40 to 85 1.23 0.95 50 No 8/PDIP
MCP16301 In Production Yes $0.70 Step Down (Buck) 1 4 - 30 2 - 15 600 2 500 0 No -40 to 85 0.8 95 7 No 6/SOT-23
MCP16301H In Production Yes $0.82 Step Down (Buck) 1 4.7 - 36 2 - 15 600 2 500 0 No -40 to 125 0.8 95 7 No 6/SOT-23
MIC4575 In Production No $1.74 Step Down (Buck) 1 4 - 24 1.23 1000 5 200 No -40 to 85 1.23 0.95 50 No 5/DDPAK, 5/TO-220
MCP16311 In Production Yes $0.92 Step Down (Buck) 1 4.4 - 30 2 - 24 1000 0.085 500 0 Yes -40 to 125 0.8 94 3 Yes 8/MSOP, 8/TDFN
MCP16312 In Production Yes $0.92 Step Down (Buck) 1 4.4 - 30 2 - 24 1000 0.085 500 0 Yes -40 to 125 0.8 94 3 No 8/MSOP, 8/TDFN
MIC4680 In Production No $1.66 Step Down (Buck) 1 4 - 34 1.23 1300 7 200 No -40 to 125 1.23 0.97 50 No 8/SOIC
MIC4690 In Production No $1.81 Step Down (Buck) 1 4 - 34 1.23 1300 7 500 No -40 to 125 1.23 0.93 50 No 8/SOIC
MIC2179 In Production No $4.10 Step Down (Buck) 1 4.5 - 16.5 1.245 - 16.5 1500 0.6 200 Yes -40 to 85 1.245 1 1 Yes 20/SSOP
MIC4681 In Production No $2.01 Step Down (Buck) 1 4 - 30 1.25 2000 7 200 0 No -40 to 125 1.25 0.95 50 No 8/SOIC
MIC4682 In Production No $2.78 Step Down (Buck) 1 4 - 34 1.23 2000 7 200 No -40 to 125 1.23 0.95 35 No 8/SOIC
MIC4684 In Production No $1.32 Step Down (Buck) 1 4 - 30 1.24 2000 6 200 No -40 to 125 1.24 0.94 5 No 8/SOIC
MIC2177 In Production No $4.49 Step Down (Buck) 1 4.5 - 16.5 1.245 - 16.5 2500 0.5 200 Yes -40 to 85 1.245 1 1 Yes 20/SOIC
MIC2178 In Production No $4.49 Step Down (Buck) 1 4.5 - 16.5 1.245 - 16.5 2500 0.6 200 Yes -40 to 85 1.245 1 1 Yes 20/SOIC
MIC4576 In Production No $1.80 Step Down (Buck) 1 4 - 36 1.23 3000 5 200 No -40 to 85 1.23 0.95 50 No 5/DDPAK, 5/TO-220
MIC4685 In Production No $2.13 Step Down (Buck) 1 4 - 30 1.24 3000 6 200 No -40 to 125 1.24 0.94 5 No 7/SPAK
MIC4724 In Production No $1.84 Step Down (Buck) 1 3 - 6 1 - 5.5 3000 0.57 2000 No -40 to 125 1 1 2 No 10/MSOP
MIC24045 In Production No $1.61 Step Down (Buck) 1 4.5 - 19 0.65 - 5.5 5000 1200 0 Yes -40 to +125 0.65 90 0 No 20/VQFN
MIC24046 In Production No $1.49 Step Down (Buck) 1 4.5 - 19 0.7 - 3.3 5000 5.6 Yes -40 to 125 0 42 No 20/VQFN
MIC26400 In Production No $1.60 Step Down (Buck) 1 4.5 - 26 0.8 - 5.5 5000 1.4 300 Yes -40 to 125 0.8 0.87 700 No 28/VQFN
MIC24051 In Production No $1.01 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 6000 0.73 600 0 Yes -40 to 125 0.8 82 5 No 28/VQFN
MIC24052 In Production No $1.01 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 6000 0.45 600 0 Yes -40 to 125 0.8 82 5 Yes 28/VQFN
MIC26601 In Production No $1.75 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 6000 0.73 600 Yes -40 to 125 0.8 0.82 5 No 28/VQFN
MIC26603 In Production No $1.80 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 6000 0.45 600 Yes -40 to 125 0.8 0.82 5 Yes 28/VQFN
MIC26603Z In Production No $1.77 Step Down (Buck) 1 4.5 - 28 0.6 - 5.5 6000 0.73 600 Yes -40 to 125 0.6 0.82 5 No 28/VQFN
MIC26600 In Production No $1.65 Step Down (Buck) 1 4.5 - 26 0.8 - 5.5 7000 1.4 300 Yes -40 to 125 0.8 0.87 700 No 28/VQFN
MIC27600 In Production No $1.75 Step Down (Buck) 1 4.5 - 36 0.8 - 5.5 7000 1.4 300 Yes -40 to 125 0.8 0.87 700 No 28/VQFN
MIC24053 In Production No $1.23 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 9000 0.73 600 Yes -40 to 125 0.8 0.82 5 No 28/VQFN
MIC24054 In Production No $1.23 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 9000 0.45 600 Yes -40 to 125 0.8 0.82 5 Yes 28/VQFN
MIC26901 In Production No $1.92 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 9000 0.45 600 Yes -40 to 125 0.8 0.82 5 No 28/VQFN
MIC26903 In Production No $1.96 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 9000 0.45 600 Yes -40 to 125 0.8 0.82 5 Yes 28/VQFN
MIC26903Z In Production No $1.96 Step Down (Buck) 1 4.5 - 28 0.6 - 5.5 9000 0.73 600 Yes -40 to 125 0.6 0.82 5 No 28/VQFN
MIC24055 In Production No $1.44 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 12000 0.73 600 Yes -40 to 125 0.8 0.82 5 No 28/VQFN
MIC24056 In Production No $1.44 Step Down (Buck) 1 4.5 - 19 0.8 - 5.5 12000 0.45 600 Yes -40 to 125 0.8 0.82 5 Yes 28/VQFN
MIC261201 In Production No $2.08 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 12000 0.45 600 Yes -40 to 125 0.8 0.82 5 No 28/VQFN
MIC261203 In Production No $2.13 Step Down (Buck) 1 4.5 - 28 0.8 - 5.5 12000 0.45 600 Yes -40 to 125 0.8 0.82 5 Yes 28/VQFN
MIC261203Z In Production No $2.13 Step Down (Buck) 1 4.5 - 28 0.6 - 5.5 12000 0.73 600 Yes -40 to 125 0.6 0.82 5 No 28/VQFN
MIC26950 In Production No $1.81 Step Down (Buck) 1 4.5 - 26 0.8 - 5.5 12000 1.4 300 Yes -40 to 125 0.8 0.87 700 No 28/VQFN
View All Parametrics
Product Status Automotive Recommended 5K Pricing Regulator Type No of Outputs Input Voltage Range (V) Output Voltage Range (V) Output Current (mA) Max Quiescent Current (mA) type Switching Frequency (kHz) Switch current (A) type Synchronous Rectifier Operating Temperature Range (°C) Vfb (V) Duty Cycle Max (%) SHUTDOWN Current (µA) (Typ) Light Load Efficiency Mode Alternative Topology Packages
LM2574 In Production No $0.87 Step Down (Buck) 1 4 - 40 1.23 500 5 52 0 No -40 to 125 1.23 98 50 No 8/PDIP
MCP16301H In Production Yes $0.82 Step Down (Buck) 1 4.7 - 36 2 - 15 600 2 500 0 No -40 to 125 0.8 95 7 No 6/SOT-23
LM2575 In Production No $1.13 Step Down (Buck) 1 4 - 40 1.23 1000 10 52 No -40 to 125 1.23 0.98 50 No 5/DDPAK, 16/PDIP, 5/TO-220
MCP16331 In Production Yes $0.99 Step Down (Buck) 1 4.4 - 50 2 - 24 1000 1 500 0 No -40 to 125 0.8 93 6 No 8/TDFN, 6/SOT-23
MIC28512 In Production No $1.77 Step Down (Buck) 1 4.6 - 70 0.8 - 24 2000 0.4 0 Yes -40 to 125 0.8 0.85 0.1 Yes 24/VQFN
LM2576 In Production No $1.08 Step Down (Buck) 1 4 - 40 1.23 3000 30 52 No -40 to 125 1.23 0.98 50 No 5/DDPAK, 5/TO-220
MIC28511 In Production No $1.65 Step Down (Buck) 1 4.6 - 60 0.8 - 24 3000 0.4 0 Yes -40 to 125 0.8 0.85 0.1 Yes 24/VQFN
MIC4576 In Production No $1.80 Step Down (Buck) 1 4 - 36 1.23 3000 5 200 No -40 to 85 1.23 0.95 50 No 5/DDPAK, 5/TO-220
MIC28510 In Production No $1.81 Step Down (Buck) 1 4.5 - 75 0.8 - 5.5 4000 1.4 Yes -40 to 125 0.8 0.8 700 No 28/VQFN
MIC28513 In Production No $1.47 Step Down (Buck) 1 4.6 - 45 0.8 - 24 4000 0.4 0 Yes -40 to 125 0.8 0.85 0.1 Yes 24/VQFN
MIC28514 In Production $1.55 Step Down (Buck) 1 4.5 - 75 0.6 - 32 5000 1 270 to 800 5 Yes -40 to +125 0.6 85 1 No 32/VQFN
MIC28515 In Production $1.55 Step Down (Buck) 1 4.5 - 75 0.6 - 32 5000 1 270 to 800 5 Yes -40 to +125 0.6 85 1 Yes COT 32/VQFN
MIC27600 In Production No $1.75 Step Down (Buck) 1 4.5 - 36 0.8 - 5.5 7000 1.4 300 Yes -40 to 125 0.8 0.87 700 No 28/VQFN
MIC28516 In Production Consider: MIC28517 No $2.09 Step Down (Buck) 1 4.5 - 70 0.6 - 32 8000 1 270 to 800 8 Yes -40 to +125 0.6 85 1 No COT 32/VQFN
MIC28517 In Production Consider: MIC28516 No $2.09 Step Down (Buck) 1 4.5 - 70 0.6 - 32 8000 1 270 to 800 8 Yes -40 to +125 0.6 85 1 Yes COT 32/VQFN
Legal |
Stay on the leading edge - newsletter sign up

© Copyright 1998- Microchip Technology Inc. All rights reserved.

This website uses cookies for analytics, personalization, and other purposes. Click to learn more. By continuing to browse, you agree to our use of cookies as described in our Cookies Statement.
Accept Cookies