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. 162-9817
Mfr. Part No.LMR61428XMM/NOPB
SGD1.365
Each (On a Reel of 1000)
units
Step Up 2.85A 1 - - Surface Mount VSSOP 8 Adjustable 2 MHz Yes 87% 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 914-2995
Mfr. Part No.LMR61428XMM/NOPB
SGD2.814
Each (In a Pack of 5)
units
Step Up 2.85A 1 - - Surface Mount VSSOP 8 Adjustable 2 MHz Yes - 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 545-5966
Mfr. Part No.LT1303CN8#PBF
SGD10.12
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. 822-5664
Mfr. Part No.LT3759EMSE#PBF
SGD9.72
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. 841-7535
Mfr. Part No.MCP1661T-E/OT
BrandMicrochip
SGD1.523
Each (In a Pack of 10)
units
Step Up 200mA 1 0.5 %/V 1.5 % Surface Mount SOT-23 5 Adjustable 575 kHz Yes - 3.1 x 1.8 x 1.3mm 1.3mm
RS Stock No. 165-4043
Mfr. Part No.MCP1661T-E/OT
BrandMicrochip
SGD1.168
Each (On a Reel of 3000)
units
Step Up 200mA 1 0.5 %/V 1.5 % Surface Mount SOT-23 5 Adjustable 575 kHz Yes 92% 3.1 x 1.8 x 1.3mm 1.3mm
RS Stock No. 812-4078
Mfr. Part No.TLV61220DBVR
SGD1.49
Each (In a Pack of 25)
units
Step Up 400mA 1 0.5 % 0.5 % Surface Mount SOT-23 6 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 121-9379
Mfr. Part No.TLV61220DBVR
SGD0.778
Each (On a Reel of 3000)
units
Step Up 400mA 1 0.5 % 0.5 % Surface Mount SOT-23 6 Adjustable 2000 kHz Yes - 3.05 x 1.75 x 1.3mm 1.3mm
RS Stock No. 798-1290
Mfr. Part No.LMZ34002RKGT
SGD20.59
Each
units
Boost/Buck Controller 2A 1 ±0.1 % ±0.4 % Surface Mount BQFN 41 Adjustable 900 kHz Yes - 11.15 x 9.15 x 2.85mm 2.85mm
RS Stock No. 545-5944
Mfr. Part No.LT1302CN8#PBF
SGD11.79
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. 162-6594
Mfr. Part No.LMZ34002RKGT
SGD16.338
Each (On a Reel of 250)
units
Boost/Buck Controller 2A 1 ±0.1 % ±0.4 % Surface Mount BQFN 41 Adjustable 900 kHz Yes - 11.15 x 9.15 x 2.85mm 2.85mm
RS Stock No. 121-9165
Mfr. Part No.TPS61201DRCT
SGD2.40
Each (On a Reel of 250)
units
Step Up 300mA 1 0.1 % 0.1 % Surface Mount SON 10 Fixed 1650 kHz Yes - 3 x 3 x 0.9mm 0.9mm
RS Stock No. 162-8405
Mfr. Part No.TPS61230DRCR
SGD1.872
Each (On a Reel of 3000)
units
Step Up 2.1A 1 0.06 %/V 0.15 %/A Surface Mount SON 10 Adjustable 2 MHz - 96% 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 545-6278
Mfr. Part No.LT1300CN8#PBF
SGD10.52
Each
units
Step Up 220mA 1 0.15 %/V - Through Hole PDIP 8 Fixed 185 kHz Yes 88% 10.16 x 6.48 x 3.3mm 3.3mm
RS Stock No. 121-9346
Mfr. Part No.LMR62421XMFE/NOPB
SGD2.029
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. 533-3305
Mfr. Part No.LM2585T-5.0/NOPB
SGD12.26
Each
units
Step Up 3A 1 50 mV 50 mV Through Hole TO-220 5 Fixed 115 kHz Yes 80% 10.16 x 4.57 x 8.64mm 8.64mm
RS Stock No. 825-3669
Mfr. Part No.TLV61225DCKT
SGD1.68
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. 162-8731
Mfr. Part No.TLV61225DCKT
SGD1.252
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. 823-4135
Mfr. Part No.NCV887001D1R2G
SGD2.264
Each (In a Pack of 5)
units
Boost Controller 100µA 1 - - Surface Mount SOIC 8 Adjustable 110 kHz - - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 100-3984
Mfr. Part No.LM2577T-ADJ/NOPB
SGD9.692
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