Switching Regulators

Switching regulators are a type of circuit that can transform voltage and input current into a voltage and an output current that is most suitable to power the system that it is producing power for. These types of circuits are also known as converters and are ideal for regulating the energy that is transferred between these two contact points to maintain a constant output voltage that is safely within the limits of the circuit. They work at a much higher conversion efficiency than linear regulators and offer the advantage of better and more cost-effective power management in the long term, as well as the fact that they often don't require external capacitors.

What are switching regulators used for?

These types of regulators are often used for single-cell or multi-cell battery-powered applications and for battery-powered portable electronic devices like digital cameras, handheld games consoles, controllers and more. The main benefit of using these switching converters instead of linear regulators is that they offer short-circuit protection and ensure over-voltage and under-voltage protection. They are also good for protecting electronic systems from over-temperature and over-current damage.

Types of switching regulators

  • Step-Up or Boost Regulators - These are the most basic type of switching regulator and are used to increase the output voltage
  • Step-Down or Buck-Boost Converters - They reduce or reverse the output voltage with respect to the input voltage

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    Description Price Input Voltage Output Voltage Number of Outputs Output Current Power Rating Mounting Type Package Minimum Temperature Maximum Temperature Efficiency MTBF Load Regulation Line Regulation Ripple And Noise
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    RS Stock No. 190-4522
    Mfr. Part No.MAX639ESA+
    £3.461
    Each (In a Tube of 100)
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    4 11.5V dc 4.8 5.2V dc 1 225mA - Surface Mount - -40°C +85°C 94 (Typ.)% - - - -
    RS Stock No. 178-3484
    Mfr. Part No.STS1024S1V5
    BrandXP Power
    £4.38
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    Units
    4.6 36V dc 1.5V dc 1 1A 1W Surface Mount SMD -40°C +105°C 89% 3.5 (Minimum)Mh ±0.6% ±0.2% 75mV Pk-Pk
    RS Stock No. 188-2979
    Mfr. Part No.STH0548S12
    BrandXP Power
    £275.37
    1 Tube of 40
    Tube(s)
    17 72V dc 12V dc 1 500mA - Surface Mount SMD -40°C +100°C 86 % @ 72 V 4.8 (Minimum)Mh ±1% ±1% 75mV Pk-Pk
    RS Stock No. 139-2822
    Mfr. Part No.R-78B12-2.0
    BrandRecom
    £329.28
    1 Tube of 42
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    15 32V dc 12V dc 1 2A 24W Through Hole SIP 3 -40°C +70°C 96% 6349000h ±1% ±0.5% 75mV Pk-Pk
    RS Stock No. 161-8868
    Mfr. Part No.STR05S09
    BrandXP Power
    £61.90
    1 Tube of 10
    Tube(s)
    11 32V dc 9V dc 1 500mA 4.5W Surface Mount SMD -40°C +100°C 92% 2Mh ±0.4% ±0.2% 40mV Pk-Pk
    RS Stock No. 178-3478
    Mfr. Part No.STS1024S05
    BrandXP Power
    £6.71
    Each
    Units
    6.5 36V dc 5V dc 1 1A 1W Surface Mount SMD -40°C +105°C 95.5% 3.5 (Minimum)Mh ±0.6% ±0.2% 75mV Pk-Pk
    RS Stock No. 178-3465
    Mfr. Part No.STS1024S09
    BrandXP Power
    £177.98
    1 Tube of 30
    Tube(s)
    12 36V dc 9V dc 1 1A 1W Surface Mount SMD -40°C +105°C 95.5% 3.5 (Minimum)Mh ±0.6% ±0.2% 75mV Pk-Pk
    RS Stock No. 188-2973
    Mfr. Part No.STH0548S3V3
    BrandXP Power
    £275.37
    1 Tube of 40
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    9 72V dc 3.3V dc 1 500mA - Surface Mount SMD -40°C +100°C 70 % @ 72 V 4.8 (Minimum)Mh ±1% ±1% 75mV Pk-Pk
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    RS Stock No. 190-8023
    Mfr. Part No.MAX861IUA+
    £2.184
    Each (In a Pack of 5)
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    1.5 5.5V dc 2.5 5.5V dc 1 100mA - Surface Mount - -25°C +85°C 99.9 (Typ.)% - - - -
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    RS Stock No. 190-4506
    Mfr. Part No.MAX17505ATP+
    £1.918
    Each (In a Tube of 75)
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    4.5 60V dc 4.75 5.25V dc 1 1.7A - Surface Mount - -40°C +125°C 90% - - - -
    New
    RS Stock No. 190-7864
    Mfr. Part No.MAX15062AATA+T
    £1.998
    Each (In a Pack of 5)
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    4.5 60V dc 4.75 5.25V dc 1 300mA - Surface Mount - -40°C +125°C 92% - 0.936V dc - -
    New
    RS Stock No. 190-4488
    Mfr. Part No.MAX1678EUA+
    £1.989
    Each (In a Tube of 50)
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    5.5V dc 3.16 3.44V dc 1 90mA - Surface Mount - -40°C +85°C 90% - - - -
    New
    RS Stock No. 190-8168
    Mfr. Part No.MAX1721EUT+T
    £1.328
    Each (In a Pack of 5)
    Units
    1.5 5.5V dc -0.3 0.3V dc 1 25mA - Surface Mount - -40°C +85°C 99.9 (Typ.)% - - - -
    RS Stock No. 173-7085
    Mfr. Part No.OKI-78SR-5/1.5-W36E-C
    £4.83
    Each
    Units
    12V dc 5V dc 1 1.5A 7.5W Through Hole TO-220 -40°C +85°C 90.5% 78700000h ±0.4% ±0.3% 75mV Pk-Pk
    New
    RS Stock No. 190-4470
    Mfr. Part No.ICL7660CUA+
    £1.255
    Each (In a Tube of 50)
    Units
    1.5 10V dc 3 10V dc 1 200µA - Surface Mount - 0°C +70°C 99.9 (Typ.)% - - - -
    RS Stock No. 906-8465
    Mfr. Part No.TSR 2-0525
    BrandTRACOPOWER
    £5.30
    Each
    Units
    3.8 5.5V dc 2.5V dc 1 2A - Through Hole SIP -40°C +85°C 93.5% 13520000h Maximum of 1% Maximum of 0.5% 50mV Pk-Pk
    New
    RS Stock No. 190-8207
    Mfr. Part No.MAX17504ATP+T
    £3.80
    Each (In a Pack of 2)
    Units
    4.5 60V dc 4.75 5.25V dc 1 3A - Surface Mount - -40°C +125°C 90% - - - -
    RS Stock No. 139-2820
    Mfr. Part No.R-78B3.3-2.0
    BrandRecom
    £329.28
    1 Tube of 42
    Tube(s)
    4.75 32V dc 3.3V dc 1 2A 6.6W Through Hole SIP 3 -40°C +70°C 92% 6349000h ±1% ±0.5% 50mV Pk-Pk
    RS Stock No. 178-3476
    Mfr. Part No.STS1005S1V8
    BrandXP Power
    £4.38
    Each
    Units
    3 5.5V dc 1.8V dc 1 1A 1W Surface Mount SMD -40°C +105°C 92.5% 3.5 (Minimum)Mh ±0.6% ±0.2% 75mV Pk-Pk
    RS Stock No. 178-3463
    Mfr. Part No.STS1005S2V5
    BrandXP Power
    £131.38
    1 Tube of 30
    Tube(s)
    3.8 5.5V dc 2.5V dc 1 1A 1W Surface Mount SMD -40°C +105°C 94.5% 3.5 (Minimum)Mh ±0.6% ±0.2% 75mV Pk-Pk
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