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. 165-7779
Mfr. Part No.LE50ABZ-AP
kr 2,416
Each (On a Tape of 2000)
Units
- 5 V Fixed TO-92 100mA Through Hole - 18 V 3 1 Positive 1.5mA ±1% -40 °C
RS Stock No. 802-4085
Mfr. Part No.NCP4682DSN33T1G
kr 3,729
Each (In a Pack of 10)
Units
- 3.3 V Fixed SOT-23 200mA Surface Mount 1.7 V 5.25 V 5 1 Positive 1.5µA ±0.8% -40 °C
RS Stock No. 423-557
Mfr. Part No.LT3080EST#PBF
kr 38,19
Each
Units
- 0 → 30 V Adjustable SOT-223 1.1A Surface Mount 1.2 V 36 V 3+Tab 1 Positive - - -40 °C
RS Stock No. 769-5539
Mfr. Part No.SPX3940T-L-3-3
BrandEXAR
kr 10,13
Each (In a Pack of 5)
Units
- 3.3 V Fixed D2PAK (TO-263) 1A Surface Mount 3.1 V 16 V 3 1 Positive 25mA 1% -40 °C
RS Stock No. 686-9164
Mfr. Part No.LE50ABZ-AP
kr 5,264
Each (In a Pack of 10)
Units
- 5 V Fixed TO-92 100mA Through Hole - 18 V 3 1 Positive 1.5mA ±1% -40 °C
RS Stock No. 411-958
Mfr. Part No.LT1763CS8-3.3#PBF
kr 41,18
Each
Units
- 3.3 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 533-5632
Mfr. Part No.LM2940T-5.0/NOPB
kr 13,46
Each
Units
- 5 V Fixed TO-220 1A Through Hole 6.25 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 153-3330
Mfr. Part No.LT1763CS8-3.3#PBF
kr 27,481
Each (In a Tube of 100)
Units
- 3.3 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 162-9062
Mfr. Part No.NCP4682DSN33T1G
kr 2,935
Each (On a Reel of 3000)
Units
- 3.3 V Fixed SOT-23 200mA Surface Mount 1.7 V 5.25 V 5 1 Positive 1.5µA ±0.8% -40 °C
RS Stock No. 102-5679
Mfr. Part No.LM1117IDT-3.3/NOPB
kr 11,091
Each (In a Tube of 75)
Units
- 3.3 V Fixed TO-252 800mA Surface Mount - 15 V 3 1 Positive - ±1% -40 °C
RS Stock No. 100-3962
Mfr. Part No.LM2940T-5.0/NOPB
kr 11,607
Each (In a Tube of 45)
Units
- 5 V Fixed TO-220 1A Through Hole 6.25 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 761-8169
Mfr. Part No.LT1175IST-5#PBF
kr 60,42
Each
Units
- -5 V Fixed SOT-223 500mA Surface Mount - 25 V 3+Tab 1 Negative 0.045mA 2.5% -40 °C
RS Stock No. 620-0852
Mfr. Part No.REG1117-3.3
kr 21,056
Each (In a Pack of 5)
Units
- 3.3 V Fixed SOT-223 800mA Surface Mount 3.8 V 15 V 3+Tab 1 Positive 4mA ±1% -40 °C
RS Stock No. 145-7037
Mfr. Part No.LT1963AES8#PBF
kr 29,536
Each (In a Tube of 100)
Units
- 1.21 → 20 V Adjustable SOIC 1.5A Surface Mount - 2.5 V 8 1 Positive 1mA - -40 °C
RS Stock No. 825-8244
Mfr. Part No.LP2985AIM5-3.8/NOPB
kr 2,991
Each (In a Pack of 10)
Units
- 3.8 V Fixed SOT-23 350mA Surface Mount 2.2 V 16 V 5 1 Positive <1µA 1% -40 °C
RS Stock No. 100-5913
Mfr. Part No.LM1084IT-ADJ/NOPB
kr 19,568
Each (In a Tube of 45)
Units
- 1.2 → 15 V Adjustable TO-220 5A Through Hole 2.6 V 29 V 3 1 Positive - - -40 °C
RS Stock No. 686-9388
Mfr. Part No.LD1117S33CTR
kr 3,011
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. 145-6887
Mfr. Part No.TPS71812-33DRVT
kr 7,158
Each (On a Reel of 250)
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. 910-1442
Mfr. Part No.MIC5200-5.0YS
BrandMicrochip
kr 9,222
Each (In a Pack of 10)
Units
- 5 V Fixed SOT-223 100mA Surface Mount 2.5 V 26 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 100-3961
Mfr. Part No.LM2940CT-12/NOPB
kr 10,748
Each (In a Tube of 45)
Units
- 12 V Fixed TO-220 1A Through Hole 13.6 V 26 V 3 1 Positive - - 0 °C
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