Low Dropout Voltage Regulators

Low dropout voltage regulators are types of linear regulators that provide an inexpensive way of regulating output voltage with few external components. Linear regulators are used to maintain a steady voltage in electronic devices. Low dropout voltage regulators can regulate output voltage even when it's very close to the supply voltage. They have low noise and good ripple rejection making them crucial to maintaining a stable power supply in any power-management system.


What are low dropout voltage regulators used for?


Low dropout voltage regulators help to maintain system voltage independent of battery. This makes them useful for portable applications, as well as for equipment that needs a stable voltage while minimising the supply. You're likely to find low dropout voltage regulators in devices such as smoke detectors or alarm systems.


Choosing the right low dropout voltage regulator


There are various factors to consider when choosing the right regulator. These include required output voltage, maximum load current, minimum dropout voltage and the type and range of input voltage. Low dropout voltage regulators are the right choice if a more precise output voltage is necessary and there is a low power dissipation.


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Description Price Dropout Voltage at Maximum Current Output Voltage Output Type Package Type Maximum Output Current Mounting Type Minimum Input Voltage Maximum Input Voltage Pin Count Number of Outputs Polarity Quiescent Current Accuracy Minimum Operating Temperature
RS Stock No. 165-7744
Mfr. Part No.LD1117S12CTR
$0.293
Each (On a Reel of 2500)
units
- 1.2 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 686-9366
Mfr. Part No.LD1117S12CTR
$0.729
Each (In a Pack of 25)
units
- 1.2 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 168-6597
Mfr. Part No.LD1117V33C
$0.764
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9767
Mfr. Part No.LD1117V33C
$0.797
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 168-6051
Mfr. Part No.L4941BV
$1.573
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS Stock No. 189-1374
Mfr. Part No.L4941BV
$1.89
Each
units
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS Stock No. 178-1433
Mfr. Part No.LF33CV
$1.45
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C
RS Stock No. 355-4128
Mfr. Part No.LF33CV
$1.71
Each
units
- 3.3 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C
RS Stock No. 877-2687
Mfr. Part No.L4931CD33-TR
$1.276
Each (In a Pack of 10)
units
- 3.36 V Fixed SOIC 300mA Surface Mount - 20 V 8 1 Positive 6mA - -40 °C
RS Stock No. 168-8662
Mfr. Part No.LDK130M10R
$0.425
Each (On a Reel of 3000)
units
- 1 V Fixed SOT-23 300mA Surface Mount 1.9 V 5.5 V 5 1 Positive 120µA ±3% -40 °C
RS Stock No. 168-6058
Mfr. Part No.L4940V5
$2.167
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 1.5A Through Hole - 17 V 3 1 Positive 5mA - -40 °C
RS Stock No. 168-6522
Mfr. Part No.LF33ABDT-TR
$0.528
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±1% -40 °C
RS Stock No. 686-8934
Mfr. Part No.LF33ABDT-TR
$1.398
Each (In a Pack of 5)
units
- 3.3 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±1% -40 °C
RS Stock No. 298-8491
Mfr. Part No.L4940V5
$2.67
Each
units
- 5 V Fixed TO-220 1.5A Through Hole - 17 V 3 1 Positive 5mA - -40 °C
RS Stock No. 165-5288
Mfr. Part No.L4931CD33-TR
$0.607
Each (On a Reel of 2500)
units
- 3.36 V Fixed SOIC 300mA Surface Mount - 20 V 8 1 Positive 6mA - -40 °C
RS Stock No. 829-4581
Mfr. Part No.LDK130M10R
$0.938
Each (In a Pack of 10)
units
- 1 V Fixed SOT-23 300mA Surface Mount 1.9 V 5.5 V 5 1 Positive 120µA ±3% -40 °C
RS Stock No. 168-6520
Mfr. Part No.LD2985BM50R
$0.359
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive 0.08mA - -40 °C
RS Stock No. 178-5124
Mfr. Part No.LE30CD-TR
$0.456
Each (On a Reel of 2500)
units
- 3 V Fixed SOIC 100mA Surface Mount - 18 V 8 1 Positive 1.5mA ±2% -40 °C
RS Stock No. 686-8925
Mfr. Part No.LD2985BM50R
$1.03
Each (In a Pack of 5)
units
- 5 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive 0.08mA - -40 °C
RS Stock No. 686-9108
Mfr. Part No.LE33CD-TR
$1.066
Each (In a Pack of 10)
units
- 3.3 V Fixed SOIC 100mA Surface Mount - 18 V 8 1 Positive 1.5mA ±2% -40 °C