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. 122-3379
Mfr. Part No.AZ1117CH-3.3TRG1
SGD0.119
Each (On a Reel of 4000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive 6mA ±1% -20 °C
RS Stock No. 828-7609
Mfr. Part No.AZ1117CH-3.3TRG1
SGD0.403
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive 6mA ±1% -20 °C
RS Stock No. 533-9280
Mfr. Part No.LM1084IS-3.3/NOPB
SGD4.28
Each
units
- 3.3 V Fixed D2PAK (TO-263) 5A Surface Mount 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 858-0832
Mfr. Part No.LT1084CT-5#PBF
SGD15.41
Each
units
- 4.9 → 5.1 V Fixed TO-220 5A Through Hole - 20 V 3 1 Positive 10mA - 0 °C
RS Stock No. 121-8740
Mfr. Part No.LM1084IS-3.3/NOPB
SGD3.86
Each (In a Tube of 45)
units
- 3.3 V Fixed D2PAK (TO-263) 5A Surface Mount 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 155-9377
Mfr. Part No.LT1084CT-5#PBF
SGD10.233
Each (In a Tube of 50)
units
- 4.9 → 5.1 V Fixed TO-220 5A Through Hole - 20 V 3 1 Positive 10mA - 0 °C
RS Stock No. 102-5681
Mfr. Part No.LM1117IMP-5.0/NOPB
SGD0.755
Each (On a Reel of 1000)
units
- 5 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 535-8641
Mfr. Part No.LM1117IMP-5.0/NOPB
SGD1.694
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 819-5550
Mfr. Part No.MCP1825T-ADJE/DC
BrandMicrochip
SGD0.588
Each (On a Reel of 4000)
units
- 0.8 → 5 V Adjustable SOT-223 500mA Surface Mount 2.1 V 6 V 5+Tab 1 Positive 220µA - -40 °C
RS Stock No. 686-9252
Mfr. Part No.LD1117DT33TR
SGD0.606
Each (In a Pack of 25)
units
- 3.3 V Fixed DPAK 1.3A Surface Mount - 15 V 3 1 Positive 5mA ±1% 0 °C
RS Stock No. 917-3447
Mfr. Part No.LT1965EMS8E#PBF
SGD4.684
Each (In a Tube of 50)
units
- 1.2 → 19.5 V Adjustable MSOP 1.1A Surface Mount 1.8 V 20 V 8 1 Positive 0.5mA - -40 °C
RS Stock No. 423-494
Mfr. Part No.LT1965EMS8E#PBF
SGD7.31
Each
units
- 1.2 → 19.5 V Adjustable MSOP 1.1A Surface Mount 1.8 V 20 V 8 1 Positive 0.5mA - -40 °C
RS Stock No. 165-7426
Mfr. Part No.LD1117DT33TR
SGD0.232
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 1.3A Surface Mount - 15 V 3 1 Positive 5mA ±1% 0 °C
RS Stock No. 100-5939
Mfr. Part No.LM3940IT-3.3/NOPB
SGD2.568
Each (In a Tube of 45)
units
- 3.3 V Fixed TO-220 1A Through Hole 4.5 V 7.5 V 3 1 Positive - - -40 °C
RS Stock No. 901-3254
Mfr. Part No.LT1086CT-3.3#PBF
SGD7.26
Each (In a Pack of 2)
units
- 3.3 V Fixed TO-220 1.5A Through Hole - 20 V 3 1 Positive 5mA - 0 °C
RS Stock No. 422-485
Mfr. Part No.TPS71812-33DRVT
SGD2.89
Each (In a Pack of 5)
units
- 1.2 V, 3.3 V Fixed SON 200mA Surface Mount 2.7 V 6.5 V 6 2 Positive 0.09mA ±2.5% -40 °C
RS Stock No. 534-3021
Mfr. Part No.LM3940IT-3.3/NOPB
SGD3.44
Each
units
- 3.3 V Fixed TO-220 1A Through Hole 4.5 V 7.5 V 3 1 Positive - - -40 °C
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
SGD7.41
Each
units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 153-3423
Mfr. Part No.LT1086CT-12#PBF
SGD4.813
Each (In a Tube of 50)
units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 535-8635
Mfr. Part No.LM1117IMP-3.3/NOPB
SGD1.694
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
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