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 258 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 761-4612
Tillv. art.nrLM337IMP/NOPB
VarumärkeTexas Instruments
20,514 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 921-5324
Tillv. art.nrLM337IMP/NOPB
VarumärkeTexas Instruments
7,898 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 121-9408
Tillv. art.nrTPS7A3301RGWT
VarumärkeTexas Instruments
41,221 kr
Each (On a Reel of 250)
Enheter
-1.18 → -33 V 1A Adjustable VQFN Surface Mount -3 V -36 V 20 - -40 °C +125 °C 1 Negative ±2.5%
RS-artikelnummer 661-3772
Tillv. art.nrTPS51200DRCT
VarumärkeTexas Instruments
8,89 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 817-5477
Tillv. art.nrTPS7A3301RGWT
VarumärkeTexas Instruments
55,57 kr
Each
Enheter
-1.18 → -33 V 1A Adjustable VQFN Surface Mount -3 V -36 V 20 - -40 °C +125 °C 1 Negative ±2.5%
RS-artikelnummer 162-8792
Tillv. art.nrTPS51200DRCR
VarumärkeTexas Instruments
3,533 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 922-2372
Tillv. art.nrLM7815CT/NOPB
VarumärkeTexas Instruments
8,908 kr
Each (In a Tube of 45)
Enheter
15 V 1A Fixed TO-220 Through Hole - 17.5 V 3 - 0 °C +70 °C 1 Positive -
RS-artikelnummer 796-8067
Tillv. art.nrLM7815CT/NOPB
VarumärkeTexas Instruments
13,40 kr
Each (In a Pack of 5)
Enheter
15 V 1A Fixed TO-220 Through Hole - 17.5 V 3 - 0 °C +70 °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 100-0719
Tillv. art.nrLM338T/NOPB
VarumärkeTexas Instruments
16,912 kr
Each (In a Tube of 45)
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 535-9357
Tillv. art.nrLM340S-12/NOPB
VarumärkeTexas Instruments
16,316 kr
Each (In a Pack of 5)
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 102-5762
Tillv. art.nrLM317AMDT/NOPB
VarumärkeTexas Instruments
15,353 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 145-5769
Tillv. art.nrUA78L15ACLP
VarumärkeTexas Instruments
1,535 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 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 761-5621
Tillv. art.nrLM317AEMP/NOPB
VarumärkeTexas Instruments
19,956 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 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 100-5950
Tillv. art.nrLM7912CT/NOPB
VarumärkeTexas Instruments
12,714 kr
Each (In a Tube of 45)
Enheter
-12 V 1.5A Fixed TO-220 Through Hole - -19 V 3 - 0 °C +125 °C 1 Negative ±4%
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 796-8433
Tillv. art.nrTPS7A4901DGNT
VarumärkeTexas Instruments
26,935 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%
RS-artikelnummer 102-5703
Tillv. art.nrLM317HVT/NOPB
VarumärkeTexas Instruments
19,43 kr
Each (In a Tube of 45)
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 -