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.

...
顯示內容 隱藏內容

篩選條件

正在檢視 61 - 80,共 1831 項產品
Results per page
Description Price Output Voltage Maximum Output Current Package Type Output 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庫存編號 533-8209
製造零件編號LM317T/NOPB
HK$17.72
單位
1.2 → 37 V 1.5A TO-220 Adjustable Through Hole 4.2 V 40 V 3 - 0 °C +125 °C 1 Positive -
RS庫存編號 102-5750
製造零件編號LM337LM/NOPB
HK$6.646
毎管:95 個
單位
-37 → -1.2 V 100mA SOIC Adjustable Surface Mount -40 V -4.2 V 8 0.625W -25 °C +125 °C 1 Negative -
RS庫存編號 178-4745
製造零件編號MC7812ABD2TG
HK$5.99
毎管:50 個
單位
12 V 2.2A D2PAK Fixed Surface Mount - 35 V 3 - -40 °C +125 °C 1 Positive ±4%
RS庫存編號 810-295
製造零件編號UA78L05ACLP
HK$3.85
單位
5 V 100mA TO-92 Fixed Through Hole 7 V 20 V 3 - 0 °C +125 °C 1 Positive ±5%
RS庫存編號 660-7455
製造零件編號TL783CKTTR
HK$17.466
/個 (每包:5個)
單位
1.25 → 125 V 700mA D2PAK (TO-263) Adjustable Surface Mount 21.5 V 150 V 3 - 0 °C +125 °C 1 Positive -
RS庫存編號 145-2791
製造零件編號MC79M12BDTG
HK$4.41
毎管:75 個
單位
-12 V 500mA DPAK Fixed Surface Mount - -35 V 3 - -40 °C +125 °C 1 Negative ±4%
RS庫存編號 860-7286
製造零件編號LM317BT
HK$3.328
/個 (每包:10個)
單位
1.2 → 37 V 2.2A TO-220 Adjustable Through Hole - 40 V 3 - -40 °C +125 °C 1 Positive -
RS庫存編號 516-4783
製造零件編號LM317LZG
HK$4.58
單位
1.2 → 37 V 20mA TO-92 Adjustable Through Hole - - 3 - 0 °C +125 °C 1 Positive ±4%
RS庫存編號 168-6059
製造零件編號L7805ACV
HK$3.876
毎管:50 個
單位
5 V 1A TO-220 Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive 2%
RS庫存編號 533-5698
製造零件編號LM317AT/NOPB
HK$12.27
單位
1.2 → 37 V 1.5A TO-220 Adjustable Through Hole 4.2 V 40 V 3 - -40 °C +125 °C 1 Positive ±1%
RS庫存編號 533-5711
製造零件編號LM317LZ/NOPB
HK$6.17
單位
1.2 → 37 V 100mA TO-92 Adjustable Through Hole 4.2 V 40 V 3 0.625W -40 °C +125 °C 1 Positive -
RS庫存編號 536-1322
製造零件編號LM337LM/NOPB
HK$7.40
單位
-37 → -1.2 V 100mA SOIC Adjustable Surface Mount -40 V -4.2 V 8 0.625W -25 °C +125 °C 1 Negative -
RS庫存編號 516-5900
製造零件編號MC79M12BDTG
HK$5.044
/個 (每包:5個)
單位
-12 V 500mA DPAK Fixed Surface Mount - -35 V 3 - -40 °C +125 °C 1 Negative ±4%
RS庫存編號 166-2730
製造零件編號KA7815ETU
HK$5.776
毎管:50 個
單位
15 V 1A TO-220 Fixed Through Hole - 35 V 3 - 0 °C +125 °C 1 Positive ±4%
RS庫存編號 100-3965
製造零件編號LM317AT/NOPB
HK$10.402
毎管:45 個
單位
1.2 → 37 V 1.5A TO-220 Adjustable Through Hole 4.2 V 40 V 3 - -40 °C +125 °C 1 Positive ±1%
RS庫存編號 168-6572
製造零件編號L7815CD2T-TR
HK$2.88
個 (在毎卷:1000)
單位
15 V 1.5A D2PAK Fixed Surface Mount - 35 V 3 - 0 °C +150 °C 1 Positive -
RS庫存編號 460-540
製造零件編號LM79L12ACM/NOPB
HK$6.08
/個 (每包:10個)
單位
-12 V 100mA SOIC Fixed Surface Mount -35 V -14.6 V 8 - 0 °C +70 °C 1 Negative -
RS庫存編號 516-5809
製造零件編號MC78M09CDTG
HK$3.77
/個 (每包:5個)
單位
9 V 700mA DPAK Fixed Surface Mount - 35 V 3 - 0 °C +125 °C 1 Positive -
RS庫存編號 625-6316
製造零件編號MC7812ABD2TG
HK$6.746
/個 (每包:5個)
單位
12 V 2.2A D2PAK Fixed Surface Mount - 35 V 3 - -40 °C +125 °C 1 Positive ±4%
RS庫存編號 103-5083
製造零件編號NCP7805TG
HK$3.667
毎管:50 個
單位
5 V 1A TO-220 Fixed Through Hole 7 V 35 V 3 - 0 °C +125 °C 1 - 4%