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
PHP18.24
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
PHP23.73
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. 686-9381
Mfr. Part No.LD1117S50CTR
PHP18.662
Each (In a Pack of 25)
units
- 5 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 165-7749
Mfr. Part No.LD1117S50CTR
PHP7.094
Each (On a Reel of 2500)
units
- 5 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 165-7748
Mfr. Part No.LD1117S50TR
PHP7.094
Each (On a Reel of 2500)
units
- 5 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 686-9379
Mfr. Part No.LD1117S50TR
PHP18.458
Each (In a Pack of 25)
units
- 5 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 686-9388
Mfr. Part No.LD1117S33CTR
PHP16.469
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
PHP7.094
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. 438-4885
Mfr. Part No.LD1117V33
PHP19.327
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. 165-7741
Mfr. Part No.LD1117AS33TR
PHP9.214
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 686-9344
Mfr. Part No.LD1117AS33TR
PHP25.869
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 686-8837
Mfr. Part No.LD1084V
PHP66.47
Each (In a Pack of 5)
units
- - Adjustable TO-220 5A Through Hole - 30 V 3 1 Positive - ±1% -40 °C
RS Stock No. 686-9123
Mfr. Part No.LD1117ADT33TR
PHP20.479
Each (In a Pack of 10)
units
- 3.3 V Fixed DPAK 1.2A Surface Mount - 10 V 3 1 Positive 5mA ±2% 0 °C
RS Stock No. 178-1433
Mfr. Part No.LF33CV
PHP42.74
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. 168-6550
Mfr. Part No.LD1117ADT33TR
PHP8.591
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 1.2A Surface Mount - 10 V 3 1 Positive 5mA ±2% 0 °C
RS Stock No. 880-5323
Mfr. Part No.LDS3985M33R
PHP33.634
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. 165-5515
Mfr. Part No.LDS3985M33R
PHP16.459
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. 686-8912
Mfr. Part No.LD1086DT33TR
PHP50.93
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. 714-0701
Mfr. Part No.LF33CDT-TR
PHP34.196
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
RS Stock No. 355-4128
Mfr. Part No.LF33CV
PHP41.41
Each
units
- 3.3 V Fixed TO-220 500mA Through Hole - 16 V 3 1 Positive 0.5mA ±2% -40 °C