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?Set your multimeter to the voltage settingCheck the datasheet to determine which pins are the ground, input and output.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.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.
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Texas Instruments LM317KCS, 1 Linear Voltage, Voltage Regulator 1.5A, 1.25 → 37 V 3-Pin, TO-220
VND111,842.72Tube (1 Tube of 5) -
REG,3TERMINAL,VO=5.0V,IOUT=1.5A,TO-220F
- RS Stock No.
- 6571003
VND112,034.56Each (1 Each of 5) -
-10.00%
Texas Instruments UA7810CKCS, 1 Linear Voltage, Voltage Regulator 1.5A, 10 V 3-Pin, TO-220
VND118,557.12VND113,377.44Pack (1 Pack of 5) -
Nisshinbo Micro Devices NJM78L05UA-TE1, 1 Linear Voltage, Voltage Regulator 100mA, 5 V 3-Pin, SOT-89
VND115,679.52Pack (1 Pack of 5) -
Texas Instruments UA7812CKCS, 1 Linear Voltage, Voltage Regulator 1.5A, 12 V 3-Pin, TO-220
VND125,079.68Tube (1 Tube of 5) -
Texas Instruments UA7815CKCS, 1 Linear Voltage, Voltage Regulator 1.5A, 15 V 3-Pin, TO-220
VND126,038.88Pack (1 Pack of 5) -
STMicroelectronics L78L05ABUTR, 1 Linear Voltage, Voltage Regulator 100mA, 5 V 3-Pin, SOT-89
VND128,340.96Pack (1 Pack of 10) -
STMicroelectronics L78L05ACUTR, 1 Linear Voltage, Voltage Regulator 100mA, 5 V 3-Pin, SOT-89
VND144,071.84Pack (1 Pack of 10) -
onsemi MC78M12ACDTRKG, 1 Linear Voltage, Voltage Regulator 700mA, 12 V 3-Pin, DPAK
VND147,141.28Pack (1 Pack of 10) -
STMicroelectronics LM317BT, 1 Linear Voltage, Voltage Regulator 2.2A, 1.2 → 37 V 3-Pin, TO-220
VND153,088.32Pack (1 Pack of 10) -
STMicroelectronics L7912CV, 1 Linear Voltage, Voltage Regulator 1.5A, -12 V 3-Pin, TO-220
VND155,774.08Pack (1 Pack of 10) -
onsemi MC7824BTG, 1 Linear Voltage, Voltage Regulator 1A, 24 V 3-Pin, TO-220
VND164,215.04Pack (1 Pack of 10) -
ON Semiconductor LM317MABDTG, 1 Linear Voltage, Voltage Regulator 500mA, 1.2 → 37 V 3-Pin, DPAK
VND170,162.08Tube (1 Tube of 10) -
Texas Instruments LM317DCY, 1 Linear Voltage, Voltage Regulator 1.5A, 1.25 → 37 V 3+Tab-Pin, SOT-223
VND174,958.08Pack (1 Pack of 5) -
STMicroelectronics L7809CV, 1 Linear Voltage, Voltage Regulator 1.5A, 9 V 3-Pin, TO-220
VND179,945.92Pack (1 Pack of 10) -
STMicroelectronics L7805ABD2T-TR, 1 Linear Voltage, Voltage Regulator 1.5A, 5 V 3-Pin, D2PAK
VND182,823.52Pack (1 Pack of 10) -
STMicroelectronics, 1.2 → 37 V Linear Voltage Regulator, 1.5A, 1-Channel, Adjustable 3-Pin, TO-220 LM317T
VND185,317.44Tube (1 Tube of 10) -
STMicroelectronics L78L05ABZ-TR, 1 Linear Voltage, Voltage Regulator 100mA, 5 V 3-Pin, TO-92
VND188,386.88Pack (1 Pack of 20) -
STMicroelectronics L78L33ABZ-AP, 1 Linear Voltage, Voltage Regulator 100mA, 3.3 V 3-Pin, TO-92
VND190,880.80Pack (1 Pack of 25) -
STMicroelectronics L7815CV-DG, 1 Linear Voltage, Voltage Regulator 1.5A, 15 V 3-Pin, TO-220
VND191,648.16Pack (1 Pack of 10) -
STMicroelectronics L79L05ABUTR, 1 Linear Voltage, Voltage Regulator 100mA, -5 V 3-Pin, SOT-89
VND193,566.56Pack (1 Pack of 25) -
National Semiconductor, 15 V Linear Voltage Regulator, 100mA, 1-Channel, ±5% 3-Pin, TO-92 LM78L15ACZ/NOPB
VND194,142.08Pack (1 Pack of 5) -
Texas Instruments LM79L12ACM/NOPB, 1 Linear Voltage, Voltage Regulator 100mA, -12 V 8-Pin, SOIC
VND195,484.96Tube (1 Tube of 10) -
onsemi LM317D2TG, 1 Linear Voltage, Voltage Regulator 1.5A, 1.2 → 37 V 3-Pin, D2PAK
VND196,827.84Tube (1 Tube of 10)