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. 661-6187
Mfr. Part No.REG104GA-3.3
TWD178.00
Each
units
- 3.3 V Fixed SOT-223 1A Surface Mount 2.1 V 15 V 5+Tab 1 Positive - ±2% -40 °C
RS Stock No. 533-9583
Mfr. Part No.LM1117MP-5.0/NOPB
TWD35.00
Each
units
- 5 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 100-5931
Mfr. Part No.LM1117MP-5.0/NOPB
TWD16.10
Each (On a Reel of 1000)
units
- 5 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 858-0838
Mfr. Part No.LT1084CT-12#PBF
TWD227.00
Each
units
- 11.76 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 155-9378
Mfr. Part No.LT1084CT-12#PBF
TWD214.50
Each (In a Tube of 50)
units
- 11.76 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 121-8831
Mfr. Part No.LM2940T-9.0/NOPB
TWD25.60
Each (In a Tube of 45)
units
- 9 V Fixed TO-220 1A Through Hole 10.5 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 669-4890
Mfr. Part No.MCP1703-5002E/DB
BrandMicrochip
TWD19.20
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 250mA Surface Mount 2.7 V 16 V 3+Tab 1 Positive 0.002mA ±2% -40 °C
RS Stock No. 911-5744
Mfr. Part No.MCP1703-5002E/DB
BrandMicrochip
TWD15.60
Each (In a Tube of 78)
units
- 5 V Fixed SOT-223 250mA Surface Mount 2.7 V 16 V 3+Tab 1 Positive 0.002mA ±2% -40 °C
RS Stock No. 153-3327
Mfr. Part No.LT1964ES5-5#TRMPBF
TWD74.30
Each (On a Reel of 500)
units
- -5 V Fixed TSOT-23 200mA Surface Mount 0 V 40 V 5 1 Negative 0.03mA - -40 °C
RS Stock No. 923-3827
Mfr. Part No.TLV1117-33CDCY
TWD11.60
Each (In a Tube of 80)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount 4.7 V 15 V 3+Tab 1 Positive 5mA - 0 °C
RS Stock No. 660-7975
Mfr. Part No.TLV1117-33CDCY
TWD23.00
Each
units
- 3.3 V Fixed SOT-223 800mA Surface Mount 4.7 V 15 V 3+Tab 1 Positive 5mA - 0 °C
RS Stock No. 411-908
Mfr. Part No.LT1964ES5-5#TRMPBF
TWD137.00
Each
units
- -5 V Fixed TSOT-23 200mA Surface Mount 0 V 40 V 5 1 Negative 0.03mA - -40 °C
RS Stock No. 460-461
Mfr. Part No.LM2941S/NOPB
TWD75.00
Each (In a Pack of 5)
units
- 5 → 20 V Adjustable D2PAK (TO-263) 1A Surface Mount -15 V 26 V 5 1 Positive - - -40 °C
RS Stock No. 923-2537
Mfr. Part No.LM2941S/NOPB
TWD43.40
Each (In a Tube of 45)
units
- 5 → 20 V Adjustable D2PAK (TO-263) 1A Surface Mount -15 V 26 V 5 1 Positive - - -40 °C
RS Stock No. 506-0653
Mfr. Part No.LT3020EMS8#PBF
TWD130.60
Each (In a Pack of 5)
units
- 0.2 9.5 V Adjustable MSOP 100mA Surface Mount 0.9 V 10 V 8 1 Positive 0.12mA - -40 °C
RS Stock No. 122-3364
Mfr. Part No.AP2210N-3.3TRG1
TWD2.50
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 13.2 V 3 1 Positive 100µA ±2% -40 °C
RS Stock No. 828-7426
Mfr. Part No.AP2210N-3.3TRG1
TWD4.50
Each (In a Pack of 100)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 13.2 V 3 1 Positive 100µA ±2% -40 °C
RS Stock No. 177-7146
Mfr. Part No.LT3020EMS8#PBF
TWD85.20
Each (In a Tube of 50)
units
- 0.2 9.5 V Adjustable MSOP 100mA Surface Mount 0.9 V 10 V 8 1 Positive 0.12mA - -40 °C
RS Stock No. 145-6867
Mfr. Part No.LT1763CS8#PBF
TWD98.50
Each (In a Tube of 100)
units
- 1.22 20 V Adjustable SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 533-9527
Mfr. Part No.LM1117DT-3.3/NOPB
TWD51.00
Each
units
- 3.3 V Fixed TO-252 800mA Surface Mount - 15 V 3 1 Positive - ±1% 0 °C