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. 545-5950
Mfr. Part No.LT1302CN85#PBF
HK$70.57
Each
units
Step Up 600mA 1 0.15 %/V - Through Hole PDIP 8 Fixed 265 kHz Yes - 10.16 x 6.48 x 3.3mm 3.3mm
RS Stock No. 396-455
Mfr. Part No.LT3473EDD#PBF
HK$46.13
Each
units
Step Up - 1 0.01 %/V - Surface Mount DFN 8 - 1400 kHz Yes - 3 x 3 x 0.75mm 0.75mm
RS Stock No. 506-1965
Mfr. Part No.LTC3459ES6#TRMPBF
HK$44.51
Each
units
Step Up 90mA 1 - - Surface Mount TSOT-23 6 Adjustable - Yes 85% 2.9 x 1.75 x 0.9mm 0.9mm
RS Stock No. 423-674
Mfr. Part No.LT3580EMS8E#PBF
HK$48.88
Each
units
Inverting, Step Up 2.8A 1 0.05 %/V - Surface Mount MSOP 8 Adjustable 2200 kHz Yes - 3 x 3 x 0.86mm 0.86mm
RS Stock No. 155-7576
Mfr. Part No.LT1937ES5#TRMPBF
HK$20.446
Each (On a Reel of 500)
units
Step Up 15mA 1 - - Surface Mount TSOT-23 5 Adjustable 1.6 MHz Yes 84% 2.9 x 1.5 x 0.9mm 0.9mm
RS Stock No. 545-5944
Mfr. Part No.LT1302CN8#PBF
HK$70.57
Each
units
Step Up 1A 1 0.15 %/V - Through Hole PDIP 8 Adjustable 265 kHz Yes - 10.16 x 6.48 x 3.3mm 3.3mm
RS Stock No. 164-6085
Mfr. Part No.LTC3105EMS#PBF
HK$58.65
Each
units
Synchronous Boost Converter 10.28mA 1 0.15 % 0.4 % Surface Mount MSOP 12 Adjustable - Yes - 4 x 3 x 0.86mm 0.86mm
RS Stock No. 411-936
Mfr. Part No.LT1615ES5#TRMPBF
HK$37.24
Each
units
Step Up 350mA 1 0.1 %/V - Surface Mount SOT-23 5 Selectable - Yes - 3.1 x 1.75 x 1.3mm 1.3mm
RS Stock No. 545-6284
Mfr. Part No.LT1301CN8#PBF
HK$53.16
Each
units
Step Up 120mA 1 0.15 %/V - Through Hole PDIP 8 Fixed 185 kHz Yes 89% 10.16 x 6.48 x 3.3mm 3.3mm
RS Stock No. 153-3379
Mfr. Part No.LTC3421EUF#PBF
HK$44.445
Each (In a Tray of 91)
units
Step Up 1.5A 1 - - Surface Mount QFN 24 Adjustable 3000 kHz Yes 96% 4 x 4 x 0.75mm 0.75mm
RS Stock No. 822-5664
Mfr. Part No.LT3759EMSE#PBF
HK$55.52
Each
units
Boost, Inverting 2A 1 0.05 %/V -0.6 % Surface Mount MSOP 12 Adjustable 1000 kHz Yes - 4.039 x 3 x 0.86mm 0.86mm
RS Stock No. 884-6970
Mfr. Part No.LT1170HVCQ#PBF
HK$158.19
Each
units
Boost, Buck, Flyback, Forward, Inverting 5A 1 0.03 %/V - Surface Mount DD 5 - 115 kHz Yes - 10.541 x 10.922 x 4.572mm 4.572mm
RS Stock No. 851-6890
Mfr. Part No.LTC3499BEMS8#PBF
HK$46.545
Each (In a Pack of 2)
units
Step Up 750mA 1 - - Surface Mount MSOP 8 Adjustable 1.4 MHz - - 3 x 3 x 0.86mm 0.86mm
RS Stock No. 858-0759
Mfr. Part No.LT1301CS8#PBF
HK$53.16
Each (In a Pack of 2)
units
Step Up - 1 0.15 %/V - Surface Mount SOIC 8 Fixed 185 kHz Yes - 5 x 3.81 x 1.5mm 1.5mm
RS Stock No. 858-0857
Mfr. Part No.LT1615IS5-1#TRMPBF
HK$44.835
Each (In a Pack of 2)
units
Step Up - 1 0.1 %/V - Surface Mount SOT-23 5 Adjustable - Yes - 3.1 x 1.75 x 1.3mm 1.3mm
RS Stock No. 822-6862
Mfr. Part No.LT1937ES5#TRMPBF
HK$32.644
Each (In a Pack of 5)
units
Step Up 15mA 1 - - Surface Mount TSOT-23 5 Adjustable 1.6 MHz Yes - 2.9 x 1.5 x 0.9mm 0.9mm
RS Stock No. 155-9384
Mfr. Part No.LT1615IS5-1#TRMPBF
HK$27.277
Each (On a Reel of 500)
units
Step Up - 1 0.1 %/V - Surface Mount SOT-23 5 Adjustable - Yes - 3.1 x 1.75 x 1.3mm 1.3mm
RS Stock No. 396-443
Mfr. Part No.LT3494AEDDB#TRMPBF
HK$31.815
Each (In a Pack of 2)
units
- - - - - Surface Mount DFN 8 - - - - 3 x 2 x 0.75mm 0.75mm
RS Stock No. 919-9269
Mfr. Part No.LT3494EDDB#TRMPBF
HK$22.897
Each (On a Reel of 500)
units
Boost Converter 27mA 1 - - Surface Mount DFN 8 Adjustable, Selectable 50 kHz Yes - 3 x 2 x 0.75mm 0.75mm
RS Stock No. 545-6925
Mfr. Part No.LT1307CS8#PBF
HK$44.47
Each
units
Step Up 500mA 1 1.5 %/V - Surface Mount SOIC 8 Adjustable 750 kHz Yes - 5 x 3.99 x 1.48mm 1.48mm