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. 533-9583
Mfr. Part No.LM1117MP-5.0/NOPB
$1.56
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
$0.801
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. 536-0492
Mfr. Part No.LP2950ACZ-3.3/NOPB
$1.42
Each (In a Pack of 5)
units
- 3.3 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 102-5728
Mfr. Part No.LP2950ACZ-3.3/NOPB
$0.627
Each (On a Reel of 1800)
units
- 3.3 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 533-5626
Mfr. Part No.LM2940CT-12/NOPB
$3.38
Each
units
- 12 V Fixed TO-220 1A Through Hole 13.6 V 26 V 3 1 Positive - - 0 °C
RS Stock No. 100-3961
Mfr. Part No.LM2940CT-12/NOPB
$2.88
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. 533-9404
Mfr. Part No.LM1085IT-5.0/NOPB
$4.30
Each
units
- 5 V Fixed TO-220 3A Through Hole 2.6 V 25 V 3 1 Positive - - -40 °C
RS Stock No. 100-5917
Mfr. Part No.LM1085IT-5.0/NOPB
$2.629
Each (In a Tube of 45)
units
- 5 V Fixed TO-220 3A Through Hole 2.6 V 25 V 3 1 Positive - - -40 °C
RS Stock No. 534-4917
Mfr. Part No.LP2950CZ-3.0/NOPB
$1.30
Each
units
- 3 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 162-4791
Mfr. Part No.LP2950CZ-3.0/NOPB
$0.538
Each (In a Box of 1800)
units
- - - - - - - - - - - - - -
RS Stock No. 534-4901
Mfr. Part No.LP2950ACZ-5.0/NOPB
$1.52
Each
units
- 5 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 100-5963
Mfr. Part No.LP2950ACZ-5.0/NOPB
$1.111
Each (On a Reel of 1800)
units
- 5 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 535-8663
Mfr. Part No.LM1117IMP-ADJ/NOPB
$1.74
Each (In a Pack of 5)
units
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
$0.789
Each (On a Reel of 1000)
units
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 100-0713
Mfr. Part No.LM2940S-5.0/NOPB
$3.032
Each (In a Tube of 45)
units
- 5 V Fixed D2PAK (TO-263) 1A Surface Mount 6.25 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 460-837
Mfr. Part No.LM2940S-5.0/NOPB
$2.00
Each (In a Pack of 5)
units
- 5 V Fixed D2PAK (TO-263) 1A Surface Mount 6.25 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
$2.92
Each
units
- 3.3 V Fixed TO-220 1.5A Through Hole 2.6 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
$0.844
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 121-9149
Mfr. Part No.TPS79333DBVR
$0.467
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 200mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 661-4490
Mfr. Part No.TPS79333DBVR
$1.14
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 200mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C