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
TWD217.00
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. 922-3505
Mfr. Part No.REG104GA-3.3
TWD197.60
Each (In a Tube of 78)
units
- - - - - - - - - - - - - -
RS Stock No. 533-9583
Mfr. Part No.LM1117MP-5.0/NOPB
TWD37.00
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
TWD15.10
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
TWD352.00
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
TWD194.90
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. 535-9048
Mfr. Part No.LM2940T-9.0/NOPB
TWD39.00
Each (In a Pack of 5)
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
TWD20.00
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
TWD17.30
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. 460-461
Mfr. Part No.LM2941S/NOPB
TWD71.20
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. 660-7975
Mfr. Part No.TLV1117-33CDCY
TWD26.00
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. 923-2537
Mfr. Part No.LM2941S/NOPB
TWD64.70
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. 923-3827
Mfr. Part No.TLV1117-33CDCY
TWD19.90
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. 411-908
Mfr. Part No.LT1964ES5-5#TRMPBF
TWD121.00
Each
units
- -5 V Fixed TSOT-23 200mA Surface Mount 0 V 40 V 5 1 Negative 0.03mA - -40 °C
RS Stock No. 153-3327
Mfr. Part No.LT1964ES5-5#TRMPBF
TWD61.90
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. 828-7426
Mfr. Part No.AP2210N-3.3TRG1
TWD4.40
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. 506-0653
Mfr. Part No.LT3020EMS8#PBF
TWD134.00
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. 177-7146
Mfr. Part No.LT3020EMS8#PBF
TWD69.00
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. 122-3364
Mfr. Part No.AP2210N-3.3TRG1
TWD2.80
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