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. 438-4885
Mfr. Part No.LD1117V33
$0.735
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. 168-6597
Mfr. Part No.LD1117V33C
$0.554
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
$0.907
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. 714-0697
Mfr. Part No.LD1117S33TR
$0.585
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
$0.20
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 686-8880
Mfr. Part No.LD2981CM50TR
$0.662
Each (In a Pack of 5)
units
- 5 V Fixed SOT-23 100mA Surface Mount 2.5 V 16 V 5 1 Positive 0.08mA - -40 °C
RS Stock No. 168-6517
Mfr. Part No.LD2981CM50TR
$0.459
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 100mA Surface Mount 2.5 V 16 V 5 1 Positive 0.08mA - -40 °C
RS Stock No. 686-8938
Mfr. Part No.LF50ABDT-TR
$1.196
Each (In a Pack of 5)
units
- 5 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±1% -40 °C
RS Stock No. 168-6523
Mfr. Part No.LF50ABDT-TR
$0.631
Each (On a Reel of 2500)
units
- 5 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±1% -40 °C
RS Stock No. 686-9372
Mfr. Part No.LD1117SC-R
$0.526
Each (In a Pack of 25)
units
- 1.25 → 15 V Adjustable SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 165-7746
Mfr. Part No.LD1117SC-R
$0.177
Each (On a Reel of 2500)
units
- 1.25 → 15 V Adjustable SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 686-9117
Mfr. Part No.L4931CZ50-AP
$1.566
Each (In a Pack of 5)
units
- 5 V Fixed TO-92 250mA Through Hole - 20 V 3 1 Positive 0.6mA ±2% -40 °C
RS Stock No. 686-8947
Mfr. Part No.LF120CDT-TR
$0.948
Each (In a Pack of 5)
units
- 12 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.7mA ±2% -40 °C
RS Stock No. 168-6524
Mfr. Part No.LF120CDT-TR
$0.635
Each (On a Reel of 2500)
units
- 12 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.7mA ±2% -40 °C
RS Stock No. 686-9782
Mfr. Part No.LD1117AV33
$1.21
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-220 1.2A Through Hole - 10 V 3 1 Positive 5mA ±2% 0 °C
RS Stock No. 168-6549
Mfr. Part No.L4931CZ50-AP
$0.565
Each (On a Tape of 2000)
units
- 5 V Fixed TO-92 250mA Through Hole - 20 V 3 1 Positive 0.6mA ±2% -40 °C
RS Stock No. 168-6601
Mfr. Part No.LD1117AV33
$0.53
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 1.2A Through Hole - 10 V 3 1 Positive 5mA ±2% 0 °C
RS Stock No. 686-9004
Mfr. Part No.LK112M60TR
$0.34
Each (In a Pack of 10)
units
- 6 V Fixed SOT-23 150mA Surface Mount 6.5 V 14 V 5 1 Positive 0.175mA - -40 °C
RS Stock No. 168-8711
Mfr. Part No.LDK220M50R
$0.706
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 200mA Surface Mount 2.5 V 13.2 V 5 1 Positive 100µA ±3% -40 °C
RS Stock No. 355-4128
Mfr. Part No.LF33CV
$1.39
Each
units
- 3.3 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C