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. 162-5332
Mfr. Part No.TPS75801KC
SGD7.218
Each (In a Tube of 50)
units
- 1.225 → 5 V Adjustable TO-220 3A Through Hole 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
RS Stock No. 170-3507
Mfr. Part No.NCP508SQ18T1G
SGD0.214
Each (On a Reel of 3000)
units
- 1.8 V Fixed SC-70 50mA Surface Mount - 13 V 5 1 Positive 1µA ±3% -40 °C
RS Stock No. 124-6518
Mfr. Part No.BU33TD3WG-TR
BrandROHM
SGD0.24
Each (In a Pack of 30)
units
- 3.3 V Fixed SSOP 200mA Surface Mount 1.7 V 6 V 5 1 Positive - ±1% -40 °C
RS Stock No. 411-968
Mfr. Part No.LT1763CS8#PBF
SGD6.72
Each
units
- 1.22 → 20 V Adjustable SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 761-8419
Mfr. Part No.LT1764AET#PBF
SGD12.27
Each
units
- 1.21 → 20 V Adjustable TO-220 3A Through Hole 2.7 V 20 V 5 1 Positive 1mA - -40 °C
RS Stock No. 686-9035
Mfr. Part No.LM2931D-R
SGD0.45
Each (In a Pack of 5)
units
- 2.5 → 26 V Adjustable SOIC 100mA Surface Mount 26 V - 8 1 Positive 2.5mA ±4% -40 °C
RS Stock No. 620-1669
Mfr. Part No.TPS76733QPWP
SGD4.144
Each (In a Pack of 5)
units
- 3.3 V Fixed HTSSOP 1A Surface Mount 2.7 V 10 V 20 1 Positive 0.085mA ±2% -40 °C
RS Stock No. 822-5884
Mfr. Part No.LT1763IDE-3.3#PBF
SGD6.88
Each (In a Pack of 2)
units
- 3.3 V Fixed DFN 500mA Surface Mount 1.8 V 20 V 12 1 Positive 30µA - -40 °C
RS Stock No. 163-1016
Mfr. Part No.NCP5661DT33RKG
SGD1.132
Each (On a Reel of 2500)
units
- 3.3 V Fixed DPAK 1A Surface Mount 2 V 9 V 5 1 Positive - ±2% -40 °C
RS Stock No. 162-5985
Mfr. Part No.TPS75733KTTT
SGD10.99
Each (On a Reel of 50)
units
- 3.3 V Fixed D2PAK (TO-263) 3A Surface Mount 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
RS Stock No. 823-4406
Mfr. Part No.MCP1804T-C002I/DB
BrandMicrochip
SGD0.915
Each (In a Pack of 10)
units
- 12 V Fixed SOT-223 150mA Surface Mount 2 V 28 V 3+Tab 1 Positive 125µA ±2% -40 °C
RS Stock No. 165-3306
Mfr. Part No.TC1014-3.3VCT713
BrandMicrochip
SGD0.408
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 50mA Surface Mount 2.7 V 6 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 121-6357
Mfr. Part No.NCP1117ST33T3G
SGD0.219
Each (On a Reel of 4000)
units
- 3.3 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS Stock No. 155-6715
Mfr. Part No.LT1761ES5-BYP#TRMPBF
SGD2.549
Each (On a Reel of 500)
units
- 1.22 → 20 V Adjustable TSOT-23 100mA Surface Mount 1.8 V 20 V 5 1 Positive 20µA - -40 °C
RS Stock No. 153-3418
Mfr. Part No.LT1129CT-5#PBF
SGD5.047
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 700mA Through Hole -30 V 30 V 5 1 Positive 0.05mA - 0 °C
RS Stock No. 102-5702
Mfr. Part No.LM2940T-8.0/NOPB
SGD1.434
Each (In a Tube of 45)
units
- 8 V Fixed TO-220 1A Through Hole 9.4 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 753-3254
Mfr. Part No.TLE4284DV50ATMA1
BrandInfineon
SGD2.805
Each (In a Pack of 2)
units
- 5 V Fixed TO-252 1A Surface Mount -0.3 V 40 V 3 1 Positive - 3% -40 °C
RS Stock No. 165-7416
Mfr. Part No.LD2981ABU33TR
SGD0.337
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-89 100mA Surface Mount 2.5 V 16 V 3 1 Positive 0.08mA ±0.75% -40 °C
RS Stock No. 536-0313
Mfr. Part No.LMS8117AMP-3.3/NOPB
SGD1.724
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-223 1A Surface Mount 2.5 V 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 145-7747
Mfr. Part No.LP3965EMP-3.3/NOPB
SGD2.943
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-223 1.5A Surface Mount 2.5 V 7 V 5+Tab 1 Positive - ±1.5% -40 °C
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