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 Components 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 Number of Outputs Line Regulation Load Regulation Mounting Type Package Type Pin Count Output Type Maximum Switching Frequency Switching Regulator Efficiency Dimensions Height
RS Stock No. 332-764
Mfr. Part No.MAX641ACPA+
SGD8.05
Each
units
Step Up 1.5A 1 0.08 %V 0.2 %V Through Hole PDIP 8 Adjustable, Fixed 50 kHz Yes 80% 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 190-0170
Mfr. Part No.MAX764CSA+
SGD10.39
Each (In a Pack of 2)
units
Boost/Buck Controller, Inverting, Non-Inverting 260mA 1 0.12 %/V 0.008 %/mA Surface Mount SOIC 8 Adjustable, Fixed 300 kHz Yes - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 190-0067
Mfr. Part No.MAX1523EUT+T
SGD5.39
Each (In a Pack of 5)
units
Step Up - 1 - - Surface Mount SOT-23 6 - - - - 3 x 1.75 x 1.3mm 1.3mm
New
RS Stock No. 216-7777
Mfr. Part No.MAX17221ENT+T
SGD2.782
Each (In a Pack of 5)
units
Boost Converter 275mA 1 1.5 % - - WLP 6 Selectable 2.5 MHz - - - -
RS Stock No. 192-2251
Mfr. Part No.MAX641ACSA+
SGD5.845
Each (In a Tube of 100)
units
Step Up 1.5A 1 0.08 %V 0.2 %V Surface Mount SOIC 8 Adjustable, Fixed 50 kHz Yes - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 204-2486
Mfr. Part No.MAX17221ENT+
SGD2.586
Each (On a Tape of 10)
units
Boost Converter 275mA 1 1.5 % - - WLP 6 Selectable 2.5 KHz - - - -
RS Stock No. 192-1896
Mfr. Part No.MAX856CSA+
SGD6.478
Each (In a Tube of 100)
units
Step Up 150mA 1 - - Surface Mount SOIC 8 Fixed 500 kHz Yes - 5 x 4 x 1.5mm 1.5mm
New
RS Stock No. 216-7776
Mfr. Part No.MAX17221ENT+T
SGD1.692
Each (On a Reel of 2500)
units
Boost Converter 275mA 1 1.5 % - - WLP 6 Selectable 2.5 MHz - - - -
New
RS Stock No. 212-2535
Mfr. Part No.MAX17291ANT+T
SGD1.124
Each (On a Reel of 2500)
units
Boost 1A 1 - 2 % - 6-bump WLP, 8-pin TDFN 8 - 1 MHz - - - -
New
RS Stock No. 212-2536
Mfr. Part No.MAX17291ANT+T
SGD1.737
Each (In a Pack of 10)
units
Boost 1A 1 - 2 % - 6-bump WLP, 8-pin TDFN 8 - 1 MHz - - - -
RS Stock No. 192-1781
Mfr. Part No.MAX1705EEE+
SGD9.705
Each (In a Tube of 100)
units
Step Up 800mA 1 - 0.65 % Surface Mount QSOP 16 Adjustable 400 kHz Yes - 4.98 x 3.99 x 1.55mm 1.55mm
RS Stock No. 192-2564
Mfr. Part No.MAX641ACPA+
SGD7.605
Each (In a Pack of 2)
units
Step Up 1.5A 1 0.08 %V 0.2 %V Through Hole PDIP 8 Adjustable, Fixed 50 kHz Yes - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 165-9014
Mfr. Part No.MAX1676EUB+
SGD4.67
Each (In a Tube of 50)
units
Step Up 420mA 1 2.5 mV/V 15 mV Surface Mount μMAX 10 Adjustable, Fixed - - 90% 3.05 x 3.05 x 0.95mm 0.95mm
RS Stock No. 192-2434
Mfr. Part No.MAX757CPA+
SGD5.94
Each (In a Pack of 2)
units
Step Up - 1 - - Through Hole PDIP 8 Adjustable, Fixed 500 kHz Yes - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 190-0111
Mfr. Part No.MAX1676EUB+
SGD6.265
Each (In a Pack of 2)
units
Step Up 420mA 1 2.5 mV/V 15 mV Surface Mount μMAX 10 Adjustable, Fixed - - - 3.05 x 3.05 x 0.95mm 0.95mm
RS Stock No. 192-2351
Mfr. Part No.MAX859CSA+
SGD7.84
Each (In a Pack of 2)
units
Step Up 60mA 1 - - Surface Mount SOIC 8 Adjustable 500 kHz Yes - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 192-1872
Mfr. Part No.MAX757CPA+
SGD6.408
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 4.45mm
RS Stock No. 192-2331
Mfr. Part No.MAX856CSA+
SGD8.59
Each (In a Pack of 2)
units
Step Up 150mA 1 - - Surface Mount SOIC 8 Fixed 500 kHz Yes - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 192-2580
Mfr. Part No.MAX641ACSA+
SGD10.17
Each (In a Pack of 2)
units
Step Up 1.5A 1 0.08 %V 0.2 %V Surface Mount SOIC 8 Adjustable, Fixed 50 kHz Yes - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 786-0941
Mfr. Part No.MAX1932ETC+
SGD13.61
Each
units
Boost Converter - 1 - 1 mV Surface Mount TQFN 12 Adjustable 340 kHz - - 4.1 x 4.1 x 0.75mm 0.75mm