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. 162-4407
Mfr. Part No.TPS61080DRCT
TWD60.40
Each (On a Reel of 250)
units
Step Up 200mA 1 - - Surface Mount SON 10 Adjustable 1200 kHz Yes - 3 x 3 x 0.9mm 0.9mm
RS Stock No. 389-312
Mfr. Part No.TPS61080DRCT
TWD102.00
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. 817-5880
Mfr. Part No.BQ25504RGTT
TWD183.00
Each
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. 162-8102
Mfr. Part No.BQ25504RGTT
TWD127.90
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. 411-936
Mfr. Part No.LT1615ES5#TRMPBF
TWD193.00
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. 423-674
Mfr. Part No.LT3580EMS8E#PBF
TWD202.00
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. 121-9372
Mfr. Part No.TPS61221DCKT
TWD26.40
Each (On a Reel of 250)
units
Step Up 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed 2000 kHz Yes - 2.15 x 1.4 x 1mm 1mm
RS Stock No. 533-8120
Mfr. Part No.LM2577T-ADJ/NOPB
TWD235.00
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. 812-3631
Mfr. Part No.TPS61221DCKT
TWD36.90
Each (In a Pack of 10)
units
Step Up 400mA 1 0.5 % 0.5 % Surface Mount SC-70 6 Fixed 2000 kHz Yes - 2.15 x 1.4 x 1mm 1mm
RS Stock No. 709-8877
Mfr. Part No.TPS61085DGKT
TWD78.00
Each
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. 917-5838
Mfr. Part No.MP1542DK-LF-P
TWD84.40
Each (In a Pack of 5)
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. 162-6462
Mfr. Part No.TPS61085DGKT
TWD46.50
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. 153-3329
Mfr. Part No.LT1615ES5#TRMPBF
TWD111.90
Each (On a Reel of 500)
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. 100-3984
Mfr. Part No.LM2577T-ADJ/NOPB
TWD209.20
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. 170-9368
Mfr. Part No.MP1542DK-LF-P
TWD49.20
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. 920-3611
Mfr. Part No.LM2621MM/NOPB
TWD39.30
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. 884-6968
Mfr. Part No.LT1961IMS8E#PBF
TWD222.50
Each (In a Pack of 2)
units
Step Up 1.5A 1 - - Surface Mount MSOP 8 - 1.25 MHz Yes - 3 x 3 x 0.86mm 0.86mm
RS Stock No. 533-5452
Mfr. Part No.LM2750LD-5.0/NOPB
TWD61.00
Each
units
Step Up 120mA 1 - - Surface Mount LLP 10 Fixed 1700 kHz Yes 87% 3 x 3 x 0.8mm 0.8mm
RS Stock No. 162-4707
Mfr. Part No.LM2750LD-5.0/NOPB
TWD28.20
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 162-6594
Mfr. Part No.LMZ34002RKGT
TWD355.80
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