Boost Converters

Boost converters, also known as step-up converters, are DC-to-DC power conversion devices (a type of switch mode converter) used to increase voltage from its input supply to its output, while simultaneously stepping down the current. The power input can come from any suitable DC source, such as batteries, solar panels, rectifiers, and DC generators. Boost converters contain at least two semiconductors, such as diodes or transistors, and at least one energy storage element, such as a capacitor, an inductor, or it may contain both in combination.

RS offer a range of boost converters from a variety of brands, including Analog Devices, Maxim Integrated, Texas Instruments, and more.

How do boost converters work?

The boost converter is able to store energy in its inductor and then simultaneously release it at a higher load voltage than was inputted in the beginning making it very useful in speeding up devices. In order to conserve the power of the circuit (as P=VI), the output current is lower than the input current to account for the higher voltage.

Boost converters can primarily work in one of two modes: continuously or discontinuously. In the continuous mode, the current is never allowed to reach zero during the discharging process (when the transistor is turned off) and thus the inductor can consistently and efficiently produce the boosted voltage rate. In this mode, the timing of the transistor switching between ON/OFF is dimensioned in such a way that the inductor is always connected back to the input supply quickly, never allowing the inductor to be completely discharged.

Alternatively, running the boost converter in the discontinuous mode means there is a greater period of time between the ON state and OFF state of the transistor. During this time, the inductor may become fully discharged and remain inactive until the transistor is ON again, and this fluctuation may cause voltages to ripple.

Where are booster converters used?

  • LCD, OLED displays
  • Haptic displays
  • Portable devices like tablets, MP3 players, and mobile phones
  • Bar-code scanners

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Description Price Regulator Function Maximum Output Current Maximum Input Voltage Number of Outputs Line Regulation Load Regulation Mounting Type Package Type Pin Count Output Type Maximum Switching Frequency Switching Regulator Efficiency Dimensions
RS Stock No. 145-9392
Mfr. Part No.MCP1642B-ADJI/MS
BrandMicrochip
kr 10,178
Each (In a Tube of 100)
Units
Step Up 800mA 5.5 V 1 ±0.5 %/V ±1.5 % Surface Mount MSOP 8 Adjustable 1.15 MHz Yes 96% 3 x 3 x 0.95mm
RS Stock No. 869-6104
Mfr. Part No.MCP1642B-ADJI/MS
BrandMicrochip
kr 13,97
Each (In a Pack of 5)
Units
Step Up 800mA 5.5 V 1 ±0.5 %/V ±1.5 % Surface Mount MSOP 8 Adjustable 1.15 MHz Yes - 3 x 3 x 0.95mm
RS Stock No. 100-3888
Mfr. Part No.LM2731YMF/NOPB
kr 9,502
Each (On a Reel of 1000)
Units
Step Up - 14 V 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 600 kHz Yes - 2.92 x 1.6 x 1.02mm
RS Stock No. 162-9894
Mfr. Part No.TPS61232DRCT
kr 26,725
Each (On a Reel of 250)
Units
Step Up 2.1A 5.5 V 1 0.06 %/V 0.15 %/A Surface Mount VSON 10 Adjustable 2 MHz Yes 96% 3.1 x 3.1 x 0.95mm
RS Stock No. 738-6241
Mfr. Part No.MCP1640T-I/CHY
BrandMicrochip
kr 7,698
Each (In a Pack of 5)
Units
Step Up 350mA 5.5 V 1 1 %/V 1 % Surface Mount SOT-23 6 Adjustable 575 kHz Yes 96% 3.1 x 1.8 x 1.3mm
RS Stock No. 165-3358
Mfr. Part No.MCP1640T-I/CHY
BrandMicrochip
kr 6,015
Each (On a Reel of 3000)
Units
Step Up 350mA 5.5 V 1 1 %/V 1 % Surface Mount SOT-23 6 Adjustable 575 kHz Yes 96% 3.1 x 1.8 x 1.3mm
RS Stock No. 504-5014
Mfr. Part No.LM2731YMF/NOPB
kr 25,708
Each (In a Pack of 5)
Units
Step Up - 14 V 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 600 kHz Yes 85% 2.92 x 1.6 x 1.02mm
RS Stock No. 914-3103
Mfr. Part No.TPS61232DRCT
kr 35,005
Each (In a Pack of 2)
Units
Step Up 2.1A 5.5 V 1 0.06 %/V 0.15 %/A Surface Mount VSON 10 Adjustable 2 MHz Yes - 3.1 x 3.1 x 0.95mm
RS Stock No. 223-6123
Mfr. Part No.MAX20472ATCC/V+
kr 19,541
Each (In a Tray of 490)
Units
Boost Converter 1A - 1 - - - TDFN 12 Fixed 2.2 MHz - - -
RS Stock No. 533-3872
Mfr. Part No.LM2621MM/NOPB
kr 35,98
Each
Units
Step Up 1A 14 V 1 - - Surface Mount MSOP 8 Adjustable 2000 kHz Yes 87% 3 x 3 x 0.86mm
RS Stock No. 192-1872
Mfr. Part No.MAX757CPA+
kr 40,319
Each (In a Tube of 50)
Units
Step Up - - 1 - - Through Hole PDIP 8 Adjustable, Fixed 500 kHz Yes - 9.91 x 7.87 x 4.45mm
RS Stock No. 223-6124
Mfr. Part No.MAX20472ATCC/V+
kr 35,42
Each (In a Pack of 5)
Units
Boost Converter 1A - 1 - - - TDFN 12 Fixed 2.2 MHz - - -
New
RS Stock No. 241-2955
Mfr. Part No.NJW4132U2-B-TE2
kr 12,195
Each (On a Reel of 1000)
Units
Step Up 2.1A 40 V 1 - - - - - - - - - -
New
RS Stock No. 236-8860
Mfr. Part No.MCP1642B-50I/MS
BrandMicrochip
kr 11,523
Each (In a Tube of 100)
Units
Boost 800mA - 1 0.5 %/V 1.5 % - SOP 8 Open Drain 1 MHz - - -
RS Stock No. 161-2588
Mfr. Part No.NCP1027P065G
Brandonsemi
kr 20,617
Each (In a Tube of 50)
Units
Boost Converter 800mA 10 V 1 - - Through Hole DIP 8 Adjustable 100 kHz Yes 82% 10.16 x 7.11 x 4.95mm
RS Stock No. 170-9385
Mfr. Part No.MP3212DQ-LF-P
kr 13,942
Each (On a Reel of 500)
Units
Step Up 1.3A 5.5 V 1 0.1 %/V 0.1 V Surface Mount QFN 10 Adjustable 1.15 MHz Yes 88% 3.1 x 3.1 x 0.95mm
RS Stock No. 812-4078
Mfr. Part No.TLV61220DBVR
kr 11,437
Each (In a Pack of 25)
Units
Step Up 400mA 5.5 V 1 0.5 % 0.5 % Surface Mount SOT-23 6 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm
RS Stock No. 622-8816
Mfr. Part No.MAX1760EUB+
kr 65,22
Each
Units
Step Up 800mA 5.5 V 1 - -1.5 % Surface Mount μMAX 10 Adjustable, Fixed 1000 kHz Yes 94% 3.05 x 3.05 x 0.95mm
RS Stock No. 709-4617
Mfr. Part No.TPS61041DBVR
kr 24,418
Each (In a Pack of 5)
Units
Step Up 250mA 6 V 1 0.05 %/V 0.15 %/mA Surface Mount SOT-23 5 Adjustable 1000 kHz Yes 85% 2.9 x 1.6 x 1.15mm
RS Stock No. 190-0067
Mfr. Part No.MAX1523EUT+T
kr 39,798
Each (In a Pack of 5)
Units
Step Up - 5.5 V 1 - - Surface Mount SOT-23 6 - - - - 3 x 1.75 x 1.3mm