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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STMicroelectronics L78L12ACZ-AP, 1 Linear Voltage, Voltage Regulator 100mA, 12 V 3-Pin, TO-92
VND522,188.48Reel (1 Reel of 50) -
STMicroelectronics L78L33ABZ-AP, 1 Linear Voltage, Voltage Regulator 100mA, 3.3 V 3-Pin, TO-92
VND190,880.80Pack (1 Pack of 25) -
STMicroelectronics L78M05ABDT-TR, 1 Linear Voltage, Voltage Regulator 500mA, 5 V 3-Pin, DPAK
VND311,164.48Pack (1 Pack of 25) -
STMicroelectronics L78M12ABDT-TR, 1 Linear Voltage, Voltage Regulator 500mA, 12 V 3-Pin, DPAK
VND364,304.16Reel (1 Reel of 25) -
STMicroelectronics L78M12CDT-TR, 1 Linear Voltage, Voltage Regulator 500mA, 12 V 3-Pin, DPAK
VND385,022.88Pack (1 Pack of 25) -
STMicroelectronics L78M12CV, 1 Linear Voltage, Voltage Regulator 500mA, 12 V 3-Pin, TO-220
VND23,404.48 -
STMicroelectronics L78S05CV, 1 Linear Voltage, Voltage Regulator 2A, 5 V 3-Pin, TO-220
VND261,094.24Tube (1 Tube of 10) -
STMicroelectronics L78S09CV, 1 Linear Voltage, Voltage Regulator 2A, 9 V 3-Pin, TO-220
VND257,641.12Tube (1 Tube of 10) -
STMicroelectronics L78S12CV, 1 Linear Voltage, Voltage Regulator 2A, 12 V 3-Pin, TO-220
VND262,437.12Pack (1 Pack of 10) -
STMicroelectronics L78S18CV, 1 Linear Voltage, Voltage Regulator 2A, 18 V 3-Pin, TO-220
VND284,306.88Pack (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) -
STMicroelectronics L7915CV, 1 Linear Voltage, Voltage Regulator 1.5A, -15 V 3-Pin, TO-220
VND22,828.96 -
STMicroelectronics L79L05ABD13TR, 1 Linear Voltage, Voltage Regulator 100mA, -5 V 8-Pin, SOIC
VND220,040.48Reel (1 Reel of 25) -
STMicroelectronics L79L05ABUTR, 1 Linear Voltage, Voltage Regulator 100mA, -5 V 3-Pin, SOT-89
VND193,566.56Pack (1 Pack of 25) -
STMicroelectronics L79L05ACZ, 1 Linear Voltage, Voltage Regulator 100mA, -5 V 3-Pin, TO-92
VND12,085.92 -
STMicroelectronics LM217T, 1 Linear Voltage, Voltage Regulator 1.5A, 1.2 → 37 V 3-Pin, TO-220
VND25,131.04 -
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 LM317D2T-TR, 1 Linear Voltage, Voltage Regulator 1.5A, 1.2 → 37 V 3-Pin, D2PAK
VND239,800.00Pack (1 Pack of 5) -
STMicroelectronics LM317LZ-TR, 1 Linear Voltage, Voltage Regulator 200mA, 1.2 → 37 V 3-Pin, TO-92
VND278,551.68Pack (1 Pack of 25) -
STMicroelectronics LM317T, 1 Linear Voltage, Voltage Regulator 1.5A, 1.2 → 37 V 3-Pin, TO-220
VND841,410.24Tube (1 Tube of 50) -
STMicroelectronics LM317T-DG, 1 Linear Voltage, Voltage Regulator 500mA, 1.2 → 37 V 3-Pin, TO-220
VND528,519.20Pack (1 Pack of 25) -
STMicroelectronics, -12 V Linear Voltage Regulator, 1.5A, 1-Channel Negative, ±2% 3-Pin, TO-220 L7912ACV
VND204,885.12Tube (1 Tube of 10) -
STMicroelectronics, -5 V Linear Voltage Regulator, 1.5A, 1-Channel Negative 3-Pin, TO-220 L7905CV
VND15,539.04 -
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)