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Switching Regulators - Step Down (Buck) Products

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Product Buy Status Documents Automotive Recommended 5K Pricing Regulator Type # 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 $1.08 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 $0.54 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 $0.55 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
MIC23250 In Production No $1.13 Step Down (Buck) 2 2.7 - 5.5 0.72 400 4000 0 Yes -40 to 125 0.72 0.86 0.01 Yes 10/UDFN
12/UDFN
MCP1601 In Production $0.89 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
LM2574 In Production No $0.79 Step Down (Buck) 1 4 - 40 1.23 500 5 52 0 No -40 to 125 1.23 98 50 No 8/PDIP
MCP1603 In Production No $0.71 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 5/TSOT
8/DFN
MIC2245 In Production No $1.02 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 $1.52 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
MIC4574 In Production No $1.44 Step Down (Buck) 1 4 - 24 1.23 500 5 200 No -40 to 85 1.23 0.95 50 No 8/PDIP
MCP1602 In Production Yes $0.75 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/DFN
8/MSOP
MIC2202 In Production No $1.08 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 $1.29 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 $1.02 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 $1.55 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 $1.93 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 $0.73 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 $0.28 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 $0.67 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
MCP16301 In Production Yes $0.67 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 $0.78 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
MCP1612 In Production $1.10 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/DFN
8/MSOP
LM2575 In Production No $1.03 Step Down (Buck) 1 4 - 40 1.23 1000 10 52 No -40 to 125 1.23 0.98 50 No 5/DDPAK
5/TO-220
16/PDIP
24/SOIC
MIC4575 In Production No $1.56 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 $0.88 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 $0.88 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
MCP16331 In Production Yes $0.94 Step Down (Buck) 1 4.4 - 50 2 - 24 1000 1 500 0 No -40 to 125 0.8 93 6 No 6/SOT-23
8/TDFN
MIC33050 In Production No $1.07 Step Down (Buck) 0 1250 0 Yes 0 0 12/VDFN
MIC4680 In Production No $1.58 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 $1.72 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 $3.66 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
MIC23156 In Production No $0.56 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
MIC23159 In Production No $0.96 Step Down (Buck) 2 2.7 - 5.5 0.62 - 3.3 1500 45 3000 0 Yes -40 to 125 0.62 90 0.1 Yes 20/VQFN
MIC38150 In Production No $2.24 Step Down (Buck) 1 3 - 5.5 1 - 3.3 1500 1 1000-2500 1.5 Yes -40 to 125 1 30 Yes HYS 28/VQFN
MIC4720 In Production No $0.57 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 $0.47 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 $1.10 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 $0.87 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 $1.25 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 $0.99 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 $1.08 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 $1.09 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
MIC23158 In Production No $0.92 Step Down (Buck) 2 2.7 - 5.5 0.62 - 3.3 2000 45 3000 0 Yes -40 to 125 0.62 90 0.1 Yes 20/VQFN
MIC23201 In Production No $0.33 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
MIC23254 In Production No $1.31 Step Down (Buck) 2 2.5 - 5.5 1 - 1.8 2000 4000 Yes -40 to 125 0.86 0.01 Yes 10/UDFN
MIC28512 In Production No $1.22 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
MIC4681 In Production No $1.91 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 $2.65 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 $1.26 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 $4.02 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 $4.02 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
LM2576 In Production No $0.97 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
MIC2207 In Production No $1.10 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 $0.52 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 $1.07 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 3000 .060 1200 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC23356 In Production No $1.15 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 3000 .060 600 to 2800 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC28511 In Production No $1.13 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
MIC38300 In Production No $2.67 Step Down (Buck) 1 3 - 5.5 1 - 3.3 3000 1 1000-2500 3 Yes -40 to 125 1 30 Yes HYS 28/VQFN
MIC4576 In Production No $1.61 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 $2.03 Step Down (Buck) 1 4 - 30 1.24 3000 6 200 No -40 to 125 1.24 0.94 5 No 7/SPAK
MIC4722 In Production No $1.73 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 $0.62 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 $1.75 Step Down (Buck) 1 3 - 6 1 - 5.5 3000 0.57 2000 No -40 to 125 1 1 2 No 10/MSOP
MIC4742 In Production No $1.91 Step Down (Buck) 2 2.9 - 5.5 0.6 - 5.5 3000 2000 No -40 to 125 0.6 1 1.6 No 16/TSSOP
16/VQFN
MIC4744 In Production No $2.54 Step Down (Buck) 2 2.9 - 5.5 0.6 - 5.5 3000 4000 No -40 to 125 0.6 1 1.6 No 16/TSSOP
16/VQFN
MIC4782 In Production No $1.34 Step Down (Buck) 2 3 - 6 0.607 - 6 3000 1800 No -40 to 125 0.607 1 1.6 No 16/VQFN
MIC4930 In Production No $0.76 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 $1.10 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 $1.60 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
MIC28510 In Production No $1.72 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 $1.01 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 $1.48 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 $1.48 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
MIC24045 In Production No $1.53 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 $1.42 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 $1.52 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
MIC4950 In Production No $1.03 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 $1.90 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 $2.17 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 $2.12 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 $1.13 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 $1.34 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 .060 1200 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC23656 In Production No $1.44 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 .060 600 to 2800 0 Yes -40 to 125 0.6 100 1.5 Yes 16/UQFN
MIC24051 In Production No $0.96 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 $0.96 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 $1.67 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 $1.71 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 $1.69 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
MIC33M650 Samples Available No $2.46 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 .060 1200 0 Yes -40 to 125 0.6 100 1.5 Yes 53/MODULE
MIC33M656 Samples Available No $2.65 Step Down (Buck) 1 2.4 - 5.5 0.6 - 3.84 6000 .060 2300 0 Yes -40 to 125 0.6 100 1.5 Yes 53/MODULE
MIC22700 In Production No $2.31 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 $2.31 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
MIC26600 In Production No $1.57 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 $1.67 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 $1.17 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 $1.17 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 $1.83 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 $1.87 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 $1.87 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
MIC22950 In Production No $3.07 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
MIC24055 In Production No $1.37 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 $1.37 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
MIC24420 In Production No $1.56 Step Down (Buck) 2 4.5 - 15 0.7 12000 1000 Yes -40 to 125 0.7 0.76 25 No 24/VQFN
MIC24421 In Production No $1.56 Step Down (Buck) 2 4.5 - 15 0.7 12000 500 Yes -40 to 125 0.7 0.9 25 No 24/VQFN
MIC261201 In Production No $1.98 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 $2.03 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 $2.03 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 $1.72 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
5K pricing is for budgetary use only, shown in United States dollars. The prices are representative and do not reflect final pricing. Contact your local Microchip sales representative or distributor for volume and / or discount pricing.

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Automotive Recommended
5K Pricing
Regulator Type
# 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
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