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. 121-9346
Mfr. Part No.LMR62421XMFE/NOPB
€0.95
Each (On a Reel of 250)
units
Step Up 3A 1 0.06 %/V - Surface Mount SOT-23 5 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 533-5418
Mfr. Part No.LM2731XMF/NOPB
€2.06
Each
units
Step Up - 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 1600 kHz Yes 85% 2.92 x 1.6 x 1.02mm 1.02mm
RS Stock No. 100-3953
Mfr. Part No.LM2731XMF/NOPB
€1.087
Each (On a Reel of 1000)
units
Step Up - 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 1600 kHz Yes - 2.92 x 1.6 x 1.02mm 1.02mm
RS Stock No. 121-8684
Mfr. Part No.LM2587S-ADJ/NOPB
€11.422
Each (In a Tube of 45)
units
Step Up - 1 100 mV 100 mV Surface Mount TO-263 5 Adjustable 115 kHz Yes - 10.16 x 8.64 x 4.57mm 4.57mm
RS Stock No. 811-5863
Mfr. Part No.LMR62421XMFE/NOPB
€1.269
Each (In a Pack of 10)
units
Step Up 3A 1 0.06 %/V - Surface Mount SOT-23 5 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 533-3355
Mfr. Part No.LM2587S-ADJ/NOPB
€11.51
Each
units
Step Up - 1 100 mV 100 mV Surface Mount TO-263 5 Adjustable 115 kHz Yes 90% 10.16 x 8.64 x 4.57mm 4.57mm
RS Stock No. 162-6462
Mfr. Part No.TPS61085DGKT
€1.498
Each (On a Reel of 250)
units
Step Up 2A 1 0.0002 %/V 0.11 %/A Surface Mount MSOP 8 Adjustable 1200 kHz Yes - 3 x 3 x 0.97mm 0.97mm
RS Stock No. 162-6463
Mfr. Part No.TPS61090RSAR
€1.101
Each (On a Reel of 3000)
units
Step Up 500mA 1 0.6 % 0.6 % Surface Mount QFN 16 Adjustable 600 kHz Yes 96% 4 x 4 x 0.9mm 0.9mm
RS Stock No. 170-9368
Mfr. Part No.MP1542DK-LF-P
€1.402
Each (On a Reel of 500)
units
Boost 2A 1 - - Surface Mount MSOP 8 Adjustable 1.5 MHz Yes - 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 212-2536
Mfr. Part No.MAX17291ANT+T
€1.164
Each (In a Pack of 10)
units
Boost 1A 1 - 2 % - 6-bump WLP, 8-pin TDFN 8 - 1 MHz - - - -
RS Stock No. 533-3412
Mfr. Part No.LM2588S-ADJ/NOPB
€10.53
Each
units
Step Up 5A 1 100 mV 100 mV Surface Mount TO-263 7 Adjustable 200 kHz Yes 90% 10.16 x 8.64 x 4.57mm 4.57mm
RS Stock No. 920-3523
Mfr. Part No.LM2585S-ADJ/NOPB
€7.82
Each (In a Tube of 45)
units
Step Up 3A 1 100 mV 100 mV Surface Mount TO-263 5 Adjustable 115 kHz Yes - 10.16 x 8.64 x 4.57mm 4.57mm
RS Stock No. 122-0360
Mfr. Part No.AP1609SG-13
€1.172
Each (On a Reel of 2500)
units
Step Up 2.4A 1 - - Surface Mount SOP 8 Adjustable 300 kHz - - 4.95 x 3.95 x 1.5mm 1.5mm
New
RS Stock No. 223-6123
Mfr. Part No.MAX20472ATCC/V+
€1.119
Each (In a Tray of 490)
units
Boost Converter 1A 1 - - - TDFN 12 Fixed 2.2 MHz - - - -
RS Stock No. 167-7564
Mfr. Part No.BD8158FVM-TR
BrandROHM
€2.63
Each (In a Pack of 5)
units
Boost Converter 1.5A 1 - - Surface Mount MSOP 8 Adjustable 600 → 1200 kHz Yes - 2.9 x 2.8 x 0.75mm 0.75mm
RS Stock No. 822-6534
Mfr. Part No.LTC3786EMSE#PBF
€5.26
Each
units
Boost 85µA 1 - 2 % Surface Mount MSOP 16 Adjustable 585 kHz Yes - 4.039 x 3 x 0.86mm 0.86mm
RS Stock No. 920-3539
Mfr. Part No.LM2587T-ADJ/NOPB
€11.422
Each (In a Tube of 45)
units
Step Up - 1 100 mV 100 mV Through Hole TO-220 5 Adjustable 115 kHz Yes - 10.16 x 4.57 x 8.64mm 8.64mm
RS Stock No. 920-3611
Mfr. Part No.LM2621MM/NOPB
€1.497
Each (On a Reel of 1000)
units
Step Up 1A 1 - - Surface Mount MSOP 8 Adjustable 2000 kHz Yes - 3 x 3 x 0.86mm 0.86mm
RS Stock No. 389-312
Mfr. Part No.TPS61080DRCT
€2.60
Each
units
Step Up 200mA 1 - - Surface Mount SON 10 Adjustable 1200 kHz Yes 87% 3 x 3 x 0.9mm 0.9mm
RS Stock No. 100-3984
Mfr. Part No.LM2577T-ADJ/NOPB
€6.597
Each (In a Tube of 45)
units
Step Up 3A 1 50 mV 50 mV Through Hole TO-220 5 Adjustable 56 kHz Yes - 10.16 x 4.7 x 8.89mm 8.89mm