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.

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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 Stock No. 756-3911
Mfr. Part No.TA7812F(TE16L1,NQ)
BrandToshiba
$0.82
Each (In a Pack of 5)
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12.6 V 1A HSOP Fixed Surface Mount 19 V 33 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 260-209
Mfr. Part No.TA78L07F(F)
BrandToshiba
$0.597
Each (In a Pack of 10)
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7 V 150mA HSOP Fixed Surface Mount - 35 V 4 0.5W -30 °C +85 °C 1 Positive -
RS Stock No. 756-3924
Mfr. Part No.TA7824F(TE16L1,NQ)
BrandToshiba
$0.756
Each (In a Pack of 5)
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25.2 V 1A HSOP Fixed Surface Mount 33 V 40 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 756-3930
Mfr. Part No.TA78M05F(TE16L1,NQ
BrandToshiba
$0.662
Each (In a Pack of 5)
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5.25 V 500mA HSOP Fixed Surface Mount 10 V 35 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 756-3933
Mfr. Part No.TA78M12F(TE16L1,NQ
BrandToshiba
$0.662
Each (In a Pack of 5)
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12.6 V 500mA HSOP Fixed Surface Mount 19 V 35 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 756-3927
Mfr. Part No.TA78DS05AF(TE12L,F
BrandToshiba
$1.57
Each (In a Pack of 5)
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5.25 V 30mA HSOP Fixed Surface Mount 14 V 29 V 3 - -40 °C +85 °C 1 Positive ±5%
RS Stock No. 756-3915
Mfr. Part No.TA7815F(TE16L1,NQ)
BrandToshiba
$0.756
Each (In a Pack of 5)
units
15.75 V 1A HSOP Fixed Surface Mount 23 V 33 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 260-243
Mfr. Part No.TA78L15F(F)
BrandToshiba
$1.061
Each (In a Pack of 10)
units
15 V 150mA HSOP Fixed Surface Mount - 35 V 4 0.5W -30 °C +85 °C 1 Positive -
RS Stock No. 756-2798
Mfr. Part No.TA48M025F(T6L1,SNQ
BrandToshiba
$1.50
Each (In a Pack of 10)
units
2.625 V 500mA HSOP Fixed Surface Mount 4.5 V 29 V 3 - -40 °C +150 °C 1 Positive ±5%
RS Stock No. 260-221
Mfr. Part No.TA78L09F(F)
BrandToshiba
$1.061
Each (In a Pack of 10)
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9 V 150mA HSOP Fixed Surface Mount - 35 V 4 0.5W -30 °C +85 °C 1 Positive -
RS Stock No. 756-2808
Mfr. Part No.TA48M033F(T6L1,SNQ
BrandToshiba
$1.016
Each (In a Pack of 5)
units
3.465 V 500mA HSOP Fixed Surface Mount 5.3 V 29 V 3 - -40 °C +150 °C 1 Positive ±5%
RS Stock No. 756-3918
Mfr. Part No.TA7805F(TE16L1,NQ)
BrandToshiba
$0.756
Each (In a Pack of 5)
units
5.25 V 1A HSOP Fixed Surface Mount 10 V 33 V 3 - -30 °C +150 °C 1 Positive ±4%
RS Stock No. 260-192
Mfr. Part No.TA78L06F(F)
BrandToshiba
$1.64
Each (In a Pack of 10)
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6 V 150mA HSOP Fixed Surface Mount - 35 V 4 0.5W -30 °C +85 °C 1 Positive -
RS Stock No. 581-013
Mfr. Part No.TA78L12PF(TE85L,F)
BrandToshiba
$0.40
Each (In a Pack of 10)
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12 V 150mA SON Fixed Surface Mount - 35 V 8 1.3W -30 °C +85 °C 1 Positive ±4%
RS Stock No. 756-2801
Mfr. Part No.TA48M05F(T6L1,SNQ)
BrandToshiba
$1.22
Each (In a Pack of 5)
units
5.25 V 500mA HSOP Fixed Surface Mount 7 V 29 V 3 - -40 °C +150 °C 1 Positive ±5%