Switching Regulators

Switching regulators are circuits that transform voltage and input current into a voltage and an output current of suitable level for properly feed the system, compensating for variations in the load and input voltage. They regulate energy transfer to maintain a constant output voltage within the circuit limits.

What are switching regulators used for?

They are use for single-cell or multi-cell battery powered applications and for portable electronic devices that are battery powered. They can prevent short circuits and ensure over voltage and under voltage protection. Switching regulators protect electronic systems from over current and over temperature damage.

Types of switching regulators

The basic circuit of the switching regulator can be configured to increase (step up or boost), reduce (step down or buck), or reverse the output voltage with respect to the input voltage (inverters). Switching regulators offer several advantages over linear voltage regulators. The main advantage is the high conversion efficiency, up to 95%. They often do not require external capacitors.


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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
RS stock no. 165-6554
Mfr. Part No.ST1S31PUR
R 8.684
Each (On a Reel of 3000)
units
2.8 → 5.5V dc 0.8 → 5.5V dc 1 3A 1.5W Surface Mount VFDFPN -40°C +150°C - - 0.6% 0.3% -
RS stock no. 810-3766
Mfr. Part No.ST1S31PUR
R 8.83
Each (On a Tape of 5)
units
2.8 → 5.5V dc 0.8 → 5.5V dc 1 3A 1.5W Surface Mount VFDFPN -40°C +150°C - - 0.6% 0.3% -
RS stock no. 810-3744
Mfr. Part No.L7985A
R 29.902
Each (In a Pack of 5)
units
4.5 → 38V dc 0.6 → 38V dc 1 2A 2W Surface Mount HSOP -40°C +150°C - - - - -
RS stock no. 145-9233
Mfr. Part No.L7985A
R 24.294
Each (In a Tube of 100)
units
4.5 → 38V dc 0.6 → 38V dc 1 2A 2W Surface Mount HSOP -40°C +150°C - - - - -
RS stock no. 809-1376
Mfr. Part No.ST1S32PUR
R 11.18
Each (On a Tape of 5)
units
2.8 → 5.5V dc Minimum of 0.8V dc 1 4A 2.25W Surface Mount VFDFPN -40°C +150°C - - 0.6% 0.3% -
RS stock no. 168-7852
Mfr. Part No.ST1S32PUR
R 10.936
Each (On a Reel of 4500)
units
2.8 → 5.5V dc Minimum of 0.8V dc 1 4A 2.25W Surface Mount VFDFPN -40°C +150°C - - 0.6% 0.3% -
RS stock no. 810-3756
Mfr. Part No.L7986A
R 30.888
Each (In a Pack of 5)
units
4.5 → 38V dc 0.6 → 38V dc 1 3A 2W Surface Mount HSOP -40°C +150°C - - - - -
RS stock no. 145-9655
Mfr. Part No.L7986A
R 25.052
Each (In a Tube of 100)
units
4.5 → 38V dc 0.6 → 38V dc 1 3A 2W Surface Mount HSOP -40°C +150°C - - - - -