Linear Voltage Regulators

A Linear Voltage Regulator ensures the output voltage from the circuit is maintained at a specific voltage.

The device acts as a variable resistor, continuously adjusting to maintain a constant output voltage. The regulated voltage must be lower than the input voltage. Simple voltage regulator contains a Zener Diode and a resistor but more complicated versions include elements like a voltage reference and error amplifiers.

A more specific type of regulator are Low Dropout Voltage Regulators (LDO) which can regulate voltage even when the power supply voltage is very close to the supply voltage.


How to choose linear voltage regulator ICs?


The primary feature in choosing a regulator is usually the Output voltage as the main purpose of one is to regulate the voltage to a specific value such as 3.3V. Its accuracy to this voltage across temperature and load current is another consideration as is its maximum load. The dropout voltage value will be particularly important with battery applications.


How to test a linear voltage regulator?


  1. Set your multimeter to the voltage setting
  2. Check the datasheet to determine which pins are the ground, input and output.
  3. Attach the red wire to the input and the black wire to the ground, the multimeter should give a reading higher than the regulators' output value. If not then there is a power supply issue.
  4. Attach the red to the ground and the black wire the output, the multimeter should then give the regulators' output value (plus minus its accuracy). If not then the regulator is likely to be faulty.

...
Read more Read less

Filter

Visar 1 - 20 av 220 produkter
Resultat per sida
Beskrivning Pris Output Voltage Maximum Output Current Output Type Package Type Mounting Type Minimum Input Voltage Maximum Input Voltage Pin Count Power Rating Minimum Operating Temperature Maximum Operating Temperature Number of Outputs Polarity Accuracy
RS-artikelnummer 661-6737
Tillv. art.nrUA78M33CKCS
VarumärkeTexas Instruments
7,63 kr
Each (In a Pack of 5)
Enheter
3.3 V 500mA Fixed TO-220 Through Hole 5.3 V 25 V 3 - 0 °C +125 °C 1 Positive -
RS-artikelnummer 100-3966
Tillv. art.nrLM317EMP/NOPB
VarumärkeTexas Instruments
5,00 kr
Each (On a Reel of 1000)
Enheter
1.2 → 37 V 1A Adjustable SOT-223 Surface Mount 4.2 V 40 V 3+Tab - 0 °C +125 °C 1 Positive -
RS-artikelnummer 533-5705
Tillv. art.nrLM317EMP/NOPB
VarumärkeTexas Instruments
11,48 kr
Each
Enheter
1.2 → 37 V 1A Adjustable SOT-223 Surface Mount 4.2 V 40 V 3+Tab - 0 °C +125 °C 1 Positive -
RS-artikelnummer 921-5324
Tillv. art.nrLM337IMP/NOPB
VarumärkeTexas Instruments
7,681 kr
Each (On a Reel of 1000)
Enheter
-1.2 → -37 V 1.5A Adjustable SOT-223 Surface Mount -4.2 V -40 V 3+Tab - -40 °C +125 °C 1 Negative -
RS-artikelnummer 761-4612
Tillv. art.nrLM337IMP/NOPB
VarumärkeTexas Instruments
14,992 kr
Each (In a Pack of 5)
Enheter
-1.2 → -37 V 1.5A Adjustable SOT-223 Surface Mount -4.2 V -40 V 3+Tab - -40 °C +125 °C 1 Negative -
RS-artikelnummer 661-3772
Tillv. art.nrTPS51200DRCT
VarumärkeTexas Instruments
11,48 kr
Each
Enheter
-0.1 → 3.5 V 3A Adjustable SON Surface Mount 2.375 V 3.5 V 10 1.92W -40 °C +85 °C 1 Positive -
RS-artikelnummer 825-6804
Tillv. art.nrTPS51200DRCR
VarumärkeTexas Instruments
7,692 kr
Each (In a Pack of 5)
Enheter
0.75 → 1.25 V 5.5A Adjustable SON Surface Mount 1.1 V 3.5 V 10 0.79W -40 °C +85 °C 1 Positive ±5%
RS-artikelnummer 162-8792
Tillv. art.nrTPS51200DRCR
VarumärkeTexas Instruments
3,511 kr
Each (On a Reel of 3000)
Enheter
0.75 → 1.25 V 5.5A Adjustable SON Surface Mount 1.1 V 3.5 V 10 0.79W -40 °C +85 °C 1 Positive ±5%
RS-artikelnummer 535-9054
Tillv. art.nrLM317HVT/NOPB
VarumärkeTexas Instruments
22,086 kr
Each (In a Pack of 5)
Enheter
1.2 → 57 V 1.5A Adjustable TO-220 Through Hole 4.2 V 60 V 3 20W 0 °C +125 °C 1 Positive -
RS-artikelnummer 534-3908
Tillv. art.nrLM7912CT/NOPB
VarumärkeTexas Instruments
13,96 kr
Each
Enheter
-12 V 1.5A Fixed TO-220 Through Hole - -19 V 3 - 0 °C +125 °C 1 Negative ±4%
RS-artikelnummer 921-6894
Tillv. art.nrLM317AEMP/NOPB
VarumärkeTexas Instruments
8,171 kr
Each (On a Reel of 1000)
Enheter
1.2 → 37 V 1.5A Adjustable SOT-223 Surface Mount 4.2 V 40 V 3+Tab - -40 °C +125 °C 1 Positive ±1%
RS-artikelnummer 460-900
Tillv. art.nrLM338T/NOPB
VarumärkeTexas Instruments
18,282 kr
Each (In a Pack of 5)
Enheter
1.2 → 32 V 5A Adjustable TO-220 Through Hole 4.2 V 40 V 3 25W 0 °C +125 °C 1 Positive -
RS-artikelnummer 102-5762
Tillv. art.nrLM317AMDT/NOPB
VarumärkeTexas Instruments
17,611 kr
Each (In a Tube of 75)
Enheter
1.2 → 37 V 500mA Adjustable TO-252 Surface Mount 4.2 V 40 V 3 - -40 °C +125 °C 1 Positive ±1%
RS-artikelnummer 761-5621
Tillv. art.nrLM317AEMP/NOPB
VarumärkeTexas Instruments
15,924 kr
Each (In a Pack of 5)
Enheter
1.2 → 37 V 1.5A Adjustable SOT-223 Surface Mount 4.2 V 40 V 3+Tab - -40 °C +125 °C 1 Positive ±1%
RS-artikelnummer 922-2417
Tillv. art.nrTPS7A4901DGNT
VarumärkeTexas Instruments
18,615 kr
Each (On a Reel of 250)
Enheter
33 V 150mA Adjustable MSOP Surface Mount 3 V 36 V 8 - -40 °C +150 °C 1 Positive 2.5%
RS-artikelnummer 796-8439
Tillv. art.nrTPS7A3001DGNT
VarumärkeTexas Instruments
31,95 kr
Each
Enheter
-33 V 200mA Adjustable MSOP Surface Mount -36 V -3 V 8 - -40 °C +150 °C 1 Negative 2.5%
RS-artikelnummer 145-5769
Tillv. art.nrUA78L15ACLP
VarumärkeTexas Instruments
1,581 kr
Each (In a Bag of 1000)
Enheter
15 V 100mA Fixed TO-92 Through Hole 17.5 V 30 V 3 - 0 °C +125 °C 1 Positive ±5%
RS-artikelnummer 661-6838
Tillv. art.nrUA78L15ACLP
VarumärkeTexas Instruments
3,454 kr
Each (In a Pack of 10)
Enheter
15 V 100mA Fixed TO-92 Through Hole 17.5 V 30 V 3 - 0 °C +125 °C 1 Positive ±5%
RS-artikelnummer 179-2036
Tillv. art.nrLM340S-12/NOPB
VarumärkeTexas Instruments
14,091 kr
Each (In a Tube of 45)
Enheter
12 V 1A Fixed D2PAK (TO-263) Surface Mount 14.6 V 35 V 3 - 0 °C +125 °C 1 Positive ±2%
RS-artikelnummer 796-8433
Tillv. art.nrTPS7A4901DGNT
VarumärkeTexas Instruments
27,865 kr
Each (In a Pack of 2)
Enheter
33 V 150mA Adjustable MSOP Surface Mount 3 V 36 V 8 - -40 °C +150 °C 1 Positive 2.5%