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. 533-8120
Mfr. Part No.LM2577T-ADJ/NOPB
£6.36
Each
Units
Step Up 3A 1 50 mV 50 mV Through Hole TO-220 5 Adjustable 56 kHz Yes 80% 10.16 x 4.7 x 8.89mm 8.89mm
RS Stock No. 100-3984
Mfr. Part No.LM2577T-ADJ/NOPB
£4.92
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
RS Stock No. 545-5966
Mfr. Part No.LT1303CN8#PBF
£4.34
Each
Units
Step Up 1.15A 1 0.15 %/V - Through Hole PDIP 8 Adjustable 185 kHz Yes 88% 10.16 x 6.48 x 3.3mm 3.3mm
RS Stock No. 332-764
Mfr. Part No.MAX641ACPA+
£3.72
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. 545-5944
Mfr. Part No.LT1302CN8#PBF
£5.17
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. 162-8731
Mfr. Part No.TLV61225DCKT
£0.618
Each (On a Reel of 250)
Units
Boost Converter 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed - - 94% 2.15 x 1.4 x 1mm 1mm
RS Stock No. 825-3669
Mfr. Part No.TLV61225DCKT
£1.07
Each (In a Pack of 5)
Units
Boost Converter 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed - - - 2.15 x 1.4 x 1mm 1mm
RS Stock No. 162-6463
Mfr. Part No.TPS61090RSAR
£1.03
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. 709-8833
Mfr. Part No.TPS61090RSAR
£2.18
Each
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. 709-4617
Mfr. Part No.TPS61041DBVR
£1.40
Each (In a Pack of 5)
Units
Step Up 250mA 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 1.15mm
RS Stock No. 923-6924
Mfr. Part No.TPS61041DBVR
£0.596
Each (On a Reel of 3000)
Units
Step Up 250mA 1 0.05 %/V 0.15 %/mA Surface Mount SOT-23 5 Adjustable 1000 kHz Yes - 2.9 x 1.6 x 1.15mm 1.15mm
RS Stock No. 900-9747
Mfr. Part No.TPS61088RHLT
£3.94
Each
Units
Synchronous Boost Converter 10A 3 - - Surface Mount VQFN 20 Fixed 2.2 MHz Yes - 4.65 x 3.65 x 0.95mm 3.65mm
RS Stock No. 162-9892
Mfr. Part No.TPS61088RHLT
£2.459
Each (On a Reel of 250)
Units
Synchronous Boost Converter 10A 3 - - Surface Mount VQFN 20 Fixed 2.2 MHz Yes 91% 4.65 x 3.65 x 0.95mm 3.65mm
RS Stock No. 751-2932
Mfr. Part No.AP1609SG-13
£2.302
Each (In a Pack of 5)
Units
Step Up 2.4A 1 - - Surface Mount SOP 8 Adjustable 300 kHz - 91% 4.95 x 3.95 x 1.5mm 1.5mm
RS Stock No. 122-0360
Mfr. Part No.AP1609SG-13
£1.009
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
RS Stock No. 423-674
Mfr. Part No.LT3580EMS8E#PBF
£4.30
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. 738-6250
Mfr. Part No.MCP1640BT-I/CHY
BrandMicrochip
£0.464
Each (In a Pack of 5)
Units
Step Up 350mA 1 1 %/V 1 % Surface Mount SOT-23 6 Adjustable 575 kHz Yes 96% 3.1 x 1.8 x 1.3mm 1.3mm
RS Stock No. 811-5854
Mfr. Part No.LMR62014XMFE/NOPB
£1.332
Each (In a Pack of 10)
Units
Step Up 2A 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 1.85 MHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 162-8102
Mfr. Part No.BQ25504RGTT
£2.927
Each (On a Reel of 250)
Units
Boost Converter - 3 ±10 % - Surface Mount QFN 16 - 1 MHz Yes - 3.15 x 3.15 x 0.95mm 0.95mm
RS Stock No. 145-6225
Mfr. Part No.LMR62014XMFE/NOPB
£0.815
Each (On a Reel of 250)
Units
Step Up 2A 1 0.02 %/V - Surface Mount SOT-23 5 Adjustable 1.85 MHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm