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. 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. 100-3962
Mfr. Part No.LM2940T-5.0/NOPB
kr 12,144
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. 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. 165-7779
Mfr. Part No.LE50ABZ-AP
kr 2,526
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. 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. 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 11,241
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. 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. 535-8613
Mfr. Part No.LM1117IDT-3.3/NOPB
kr 13,18
Each (In a Pack of 5)
Units
- 3.3 V Fixed TO-252 800mA Surface Mount - 15 V 3 1 Positive - ±1% -40 °C
RS Stock No. 917-3453
Mfr. Part No.LT3080EST#PBF
kr 25,522
Each (In a Tube of 78)
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. 153-3330
Mfr. Part No.LT1763CS8-3.3#PBF
kr 26,824
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. 100-3961
Mfr. Part No.LM2940CT-12/NOPB
kr 16,306
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
RS Stock No. 165-7741
Mfr. Part No.LD1117AS33TR
kr 2,364
Each (On a Reel of 2500)
Units
- 3.3 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 162-9537
Mfr. Part No.NCP551SN33T1G
kr 1,475
Each (On a Reel of 3000)
Units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 858-0838
Mfr. Part No.LT1084CT-12#PBF
kr 89,73
Each
Units
- 11.76 → 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 785-7272
Mfr. Part No.NCP551SN33T1G
kr 3,669
Each (In a Pack of 10)
Units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 661-6333
Mfr. Part No.TPS7350QD
kr 32,10
Each
Units
- 5 V Fixed SOIC 500mA Surface Mount 5.33 V 10 V 8 1 Positive 0.34mA ±2% -40 °C
RS Stock No. 165-7750
Mfr. Part No.LD1117S33CTR
kr 1,237
Each (On a Reel of 2500)
Units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 153-3423
Mfr. Part No.LT1086CT-12#PBF
kr 28,375
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. 620-0852
Mfr. Part No.REG1117-3.3
kr 21,396
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
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