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. 669-4954
Mfr. Part No.MCP1802T-3302I/OT
BrandMicrochip
€0.448
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2 V 10 V 5 1 Positive 0.025mA ±2% -40 °C
RS Stock No. 121-6343
Mfr. Part No.NCP5662DS33R4G
€0.662
Each (On a Reel of 800)
units
- 3.3 V Fixed D2PAK 2A Surface Mount 2 V 9 V 5 1 Positive - - -40 °C
RS Stock No. 162-6222
Mfr. Part No.LM2940IMP-12/NOPB
€0.625
Each (On a Reel of 1000)
units
- 12 V Fixed SOT-223 1A Surface Mount 13.6 V 26 V 3+Tab 1 Positive 20mA - -40 °C
RS Stock No. 828-7609
Mfr. Part No.AZ1117CH-3.3TRG1
€0.24
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. 153-3402
Mfr. Part No.LT1120CN8#PBF
€3.264
Each (In a Tube of 50)
units
- 2.5 → 35.15 V Adjustable PDIP 125mA Through Hole 4.5 V 36 V 8 1 Positive - - 0 °C
RS Stock No. 823-4434
Mfr. Part No.TC2117-3.3VDBTR
BrandMicrochip
€0.617
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount 2.7 V 6 V 3+Tab 1 Positive - ±0.5% -40 °C
RS Stock No. 145-0634
Mfr. Part No.LM1117T-2.5/NOPB
€1.098
Each (In a Tube of 45)
units
- 2.5 V Fixed TO-220 800mA Through Hole - 15 V 3 1 Positive - ±1% 0 °C
RS Stock No. 165-1916
Mfr. Part No.TC2117-3.3VDBTR
BrandMicrochip
€0.465
Each (On a Reel of 4000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount 2.7 V 6 V 3+Tab 1 Positive - ±0.5% -40 °C
RS Stock No. 770-9511
Mfr. Part No.MCP1703AT-5002E/CB
BrandMicrochip
€0.456
Each (In a Pack of 10)
units
- 5 V Fixed SOT-23A 250mA Surface Mount 2.7 V 16 V 3 1 Positive 5µA 2% -40 °C
RS Stock No. 535-8708
Mfr. Part No.LM1117T-2.5/NOPB
€1.29
Each (In a Pack of 5)
units
- 2.5 V Fixed TO-220 800mA Through Hole - 15 V 3 1 Positive - ±1% 0 °C
RS Stock No. 121-7949
Mfr. Part No.NCV47701DAJR2G
€0.853
Each (On a Reel of 2500)
units
- 5 → 20 V Adjustable SOIC 350mA Surface Mount 5.5 V 40 V 8 1 Positive 50mA ±3% -40 °C
RS Stock No. 847-2888
Mfr. Part No.SPX3819M5-L-3-3/TR
BrandMaxLinear
€0.474
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-23 100mA Surface Mount 2.5 V 16 V 5 1 Positive 8µA 1% -40 °C
RS Stock No. 761-8406
Mfr. Part No.LT1763CS8-2.5#PBF
€4.18
Each
units
- 2.5 V Fixed SOIC 500mA Surface Mount 20 V 1.8 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 686-9186
Mfr. Part No.LE33CZ-TR
€0.503
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-92 100mA Through Hole - 18 V 3 1 Positive 1.5mA ±2% -40 °C
RS Stock No. 122-3379
Mfr. Part No.AZ1117CH-3.3TRG1
€0.062
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. 888-4878
Mfr. Part No.MCP1703AT-5002E/CB
BrandMicrochip
€0.346
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23A 250mA Surface Mount 2.7 V 16 V 3 1 Positive 5µA 2% -40 °C
RS Stock No. 146-1858
Mfr. Part No.SPX3819M5-L-3-3/TR
BrandEXAR
€0.189
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-23 100mA Surface Mount 2.5 V 16 V 5 1 Positive 8µA 1% -40 °C
RS Stock No. 545-5067
Mfr. Part No.LT1120CN8#PBF
€5.46
Each
units
- 2.5 → 35.15 V Adjustable PDIP 125mA Through Hole 4.5 V 36 V 8 1 Positive - - 0 °C
RS Stock No. 821-3412
Mfr. Part No.NCV47701DAJR2G
€1.794
Each (In a Pack of 5)
units
- 5 → 20 V Adjustable SOIC 350mA Surface Mount 5.5 V 40 V 8 1 Positive 50mA ±3% -40 °C
RS Stock No. 769-5481
Mfr. Part No.SPX1117M3-L-5-0
BrandEXAR
€0.307
Each (In a Pack of 25)
units
- 5 V Fixed SOT-223 800mA Surface Mount 2.6 V 15 V 3 1 Positive 10mA 1% -40 °C
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