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. 802-2137
Mfr. Part No.NCP1117LPST33T3G
R 4.967
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.1A Surface Mount -0.3 V 18 V 3+Tab 1 Positive 700µA - 0 °C
RS stock no. 163-0718
Mfr. Part No.NCP5501DT33RKG
R 3.463
Each (On a Reel of 2500)
units
- 3.462 V Fixed DPAK 500mA Surface Mount 2.5 V 16 V 3 1 Positive - ±2.9% -40 °C
RS stock no. 806-0895
Mfr. Part No.NCP5501DT33RKG
R 5.489
Each (On a Tape of 25)
units
- 3.462 V Fixed DPAK 500mA Surface Mount 2.5 V 16 V 3 1 Positive - ±2.9% -40 °C
RS stock no. 802-2130
Mfr. Part No.NCP1117ST50T3G
R 3.458
Each (In a Pack of 20)
units
- 5 V Fixed SOT-223 1A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS stock no. 124-5349
Mfr. Part No.NCP1117ST50T3G
R 1.894
Each (On a Reel of 4000)
units
- 5 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS stock no. 785-7207
Mfr. Part No.NCP1117ST33T3G
R 4.37
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-223 1A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS stock no. 121-6357
Mfr. Part No.NCP1117ST33T3G
R 2.173
Each (On a Reel of 4000)
units
- 3.3 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS stock no. 785-7187
Mfr. Part No.NCP1117LPST50T3G
R 3.701
Each (In a Pack of 20)
units
- 5 V Fixed SOT-223 1.1A Surface Mount -0.3 V 18 V 3+Tab 1 Positive 700µA - 0 °C
RS stock no. 806-5030
Mfr. Part No.NCP5501DT50G
R 5.652
Each (In a Pack of 25)
units
- 5 V Fixed DPAK 500mA Surface Mount 6.073 V 16 V 3 1 Positive - ±2.9% -40 °C
RS stock no. 806-2059
Mfr. Part No.MC33269ST-3.3T3G
R 7.426
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 20 V 3+Tab 1 Positive 8mA ±1% -40 °C
RS stock no. 864-7856
Mfr. Part No.NCP584HSN18T1G
R 2.848
Each (In a Pack of 25)
units
- 1.8 V Fixed SOT-23 250mA Surface Mount 1.4 V 6 V 5 1 Positive 70µA ±2% -40 °C
RS stock no. 163-0130
Mfr. Part No.NCP584HSN18T1G
R 2.825
Each (On a Reel of 3000)
units
- 1.8 V Fixed SOT-23 250mA Surface Mount 1.4 V 6 V 5 1 Positive 70µA ±2% -40 °C
RS stock no. 739-0458
Mfr. Part No.KA78R05CTU
R 14.388
Each (In a Pack of 5)
units
- 5 V Fixed TO-220F 1A Through Hole - 35 V 4 1 Positive 10mA - -20 °C
RS stock no. 145-4323
Mfr. Part No.KA78R05CTU
R 12.558
Each (In a Tube of 50)
units
- 5 V Fixed TO-220F 1A Through Hole - 35 V 4 1 Positive 10mA - -20 °C
RS stock no. 808-3974
Mfr. Part No.LP2950ACDT-5RKG
R 9.296
Each (On a Tape of 25)
units
- 4.92 → 5.07 V Fixed DPAK 100mA Surface Mount - 30 V 3 1 Positive - - -40 °C
RS stock no. 163-0441
Mfr. Part No.LP2950ACDT-5RKG
R 4.886
Each (On a Reel of 2500)
units
- 4.92 → 5.07 V Fixed DPAK 100mA Surface Mount - 30 V 3 1 Positive - - -40 °C
RS stock no. 102-3496
Mfr. Part No.MC33269D-3.3G
R 9.316
Each (In a Tube of 98)
units
- 3.3 V Fixed SOIC 800mA Surface Mount - 20 V 8 1 Positive 5.5mA ±1% -40 °C
RS stock no. 516-5089
Mfr. Part No.MC33269D-3.3G
R 38.03
Each
units
- 3.3 V Fixed SOIC 800mA Surface Mount - 20 V 8 1 Positive 5.5mA ±1% -40 °C
RS stock no. 785-6835
Mfr. Part No.LM317MBDTG
R 11.176
Each (In a Pack of 5)
units
- 1.2 → 37 V Adjustable DPAK 500mA Surface Mount 4.25 V 41.25 V 3 1 Positive - - -40 °C
RS stock no. 785-7339
Mfr. Part No.NCP583SQ28T1G
R 2.40
Each (On a Tape of 10)
units
- 2.8 V Fixed SC-82AB 150mA Surface Mount 1.7 V 6 V 4 1 Positive 1.5µA ±2% -40 °C