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. 686-9366
Mfr. Part No.LD1117S12CTR
$0.619
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. 165-7744
Mfr. Part No.LD1117S12CTR
$0.214
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. 168-6597
Mfr. Part No.LD1117V33C
$0.64
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
$0.729
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. 189-1374
Mfr. Part No.L4941BV
$1.73
Each
units
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS Stock No. 168-6051
Mfr. Part No.L4941BV
$1.33
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. 686-8701
Mfr. Part No.LD1085CDT-R
$1.794
Each (In a Pack of 5)
units
- 1.25 → 28 V Adjustable DPAK 3A Surface Mount - 30 V 3 1 Positive - ±2% -40 °C
RS Stock No. 355-4128
Mfr. Part No.LF33CV
$1.53
Each
units
- 3.3 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C
RS Stock No. 168-6489
Mfr. Part No.LD1085CDT-R
$0.729
Each (On a Reel of 2500)
units
- 1.25 → 28 V Adjustable DPAK 3A Surface Mount - 30 V 3 1 Positive - ±2% -40 °C
RS Stock No. 178-1433
Mfr. Part No.LF33CV
$1.331
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. 165-5288
Mfr. Part No.L4931CD33-TR
$0.595
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. 168-6058
Mfr. Part No.L4940V5
$1.447
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. 168-8662
Mfr. Part No.LDK130M10R
$0.577
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. 686-8934
Mfr. Part No.LF33ABDT-TR
$1.342
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
$2.03
Each
units
- 5 V Fixed TO-220 1.5A Through Hole - 17 V 3 1 Positive 5mA - -40 °C
RS Stock No. 829-4581
Mfr. Part No.LDK130M10R
$0.611
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. 168-6522
Mfr. Part No.LF33ABDT-TR
$0.702
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. 877-2687
Mfr. Part No.L4931CD33-TR
$1.221
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. 438-4885
Mfr. Part No.LD1117V33
$0.721
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% 0 °C
RS Stock No. 168-6081
Mfr. Part No.LF50CV
$1.17
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C