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. 168-6597
Mfr. Part No.LD1117V33C
R 6.466
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
R 9.434
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. 686-9388
Mfr. Part No.LD1117S33CTR
R 5.317
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS stock no. 165-7750
Mfr. Part No.LD1117S33CTR
R 1.875
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% -40 °C
RS stock no. 165-5515
Mfr. Part No.LDS3985M33R
R 2.976
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 6 V 5 1 Positive 1.5 (OFF Mode) μA, 300 (ON Mode) μA - -40 °C
RS stock no. 880-5323
Mfr. Part No.LDS3985M33R
R 3.065
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 6 V 5 1 Positive 1.5 (OFF Mode) μA, 300 (ON Mode) μA - -40 °C
RS stock no. 168-6558
Mfr. Part No.L4940D2T5-TR
R 12.596
Each (On a Reel of 1000)
units
- 5 V Fixed D2PAK 1.5A Surface Mount - 17 V 3 1 Positive 5mA - -40 °C
RS stock no. 686-9212
Mfr. Part No.L4940D2T5-TR
R 17.52
Each (In a Pack of 5)
units
- 5 V Fixed D2PAK 1.5A Surface Mount - 17 V 3 1 Positive 5mA - -40 °C
RS stock no. 168-8666
Mfr. Part No.LDK130M18R
R 3.56
Each (On a Reel of 3000)
units
- 1.8 V Fixed SOT-23 300mA Surface Mount 1.9 V 5.5 V 5 1 Positive 120µA ±3% -40 °C
RS stock no. 714-0697
Mfr. Part No.LD1117S33TR
R 5.562
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. 829-4597
Mfr. Part No.LDK130M18R
R 3.367
Each (In a Pack of 10)
units
- 1.8 V Fixed SOT-23 300mA Surface Mount 1.9 V 5.5 V 5 1 Positive 120µA ±3% -40 °C
RS stock no. 168-6804
Mfr. Part No.LD1117S33TR
R 1.83
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. 165-7486
Mfr. Part No.LD1086DT33TR
R 5.744
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 1.5A Surface Mount - 30 V 3 1 Positive 5mA ±1% -40 °C
RS stock no. 686-8912
Mfr. Part No.LD1086DT33TR
R 13.126
Each (In a Pack of 5)
units
- 3.3 V Fixed DPAK 1.5A Surface Mount - 30 V 3 1 Positive 5mA ±1% -40 °C
RS stock no. 165-7780
Mfr. Part No.LD29300P2MTR
R 8.513
Each (On a Reel of 1000)
units
- - Adjustable P2PAK/A 3A Surface Mount 2.5 V 30 V 6 1 Positive 20mA ±1% -40 °C
RS stock no. 686-9173
Mfr. Part No.LD29300P2MTR
R 13.37
Each (In a Pack of 5)
units
- - Adjustable P2PAK/A 3A Surface Mount 2.5 V 30 V 6 1 Positive 20mA ±1% -40 °C
RS stock no. 829-6934
Mfr. Part No.LDK220M50R
R 11.098
Each (In a Pack of 10)
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. 168-8711
Mfr. Part No.LDK220M50R
R 4.752
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. 165-7492
Mfr. Part No.LF33CDT-TR
R 4.539
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±2% -40 °C
RS stock no. 714-0701
Mfr. Part No.LF33CDT-TR
R 8.804
Each (In a Pack of 5)
units
- 3.3 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±2% -40 °C