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. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
SGD3.14
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. 661-3807
Mfr. Part No.TPS71550DCKR
SGD1.022
Each (In a Pack of 5)
units
- 5 V Fixed SC-70 50mA Surface Mount 2.5 V 24 V 5 1 Positive 0.0032mA ±4% -40 °C
RS Stock No. 100-5911
Mfr. Part No.LM1084IT-3.3/NOPB
SGD3.03
Each (In a Tube of 45)
units
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 548-5923
Mfr. Part No.UPC29M10HF-AZ
SGD1.78
Each
units
- 10 V Fixed SIP 500mA Through Hole 11 V 18 V 3 1 Positive - - -30 °C
RS Stock No. 535-8663
Mfr. Part No.LM1117IMP-ADJ/NOPB
SGD1.292
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. 145-8899
Mfr. Part No.LD39300PT-R
SGD1.109
Each (On a Reel of 2500)
units
- 1.22 → 5 V Adjustable PPAK 3A Surface Mount 2.5 V 6 V 5 1 Positive 2.5 (ON Mode) mA, 5 (OFF Mode) μA - -40 °C
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
SGD0.712
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. 423-557
Mfr. Part No.LT3080EST#PBF
SGD6.42
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. 828-7570
Mfr. Part No.AZ1084CD-3.3TRG1
SGD0.277
Each (In a Pack of 20)
units
- 3.3 V Fixed TO-252 5A Surface Mount - 12 V 3 1 Positive 10mA - 0 °C
RS Stock No. 462-8084
Mfr. Part No.TLE4264GHTSA1
BrandInfineon
SGD1.878
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 9mA ±2% -40 °C
RS Stock No. 535-8887
Mfr. Part No.LM2937ES-15/NOPB
SGD2.90
Each (In a Pack of 5)
units
- 15 V Fixed D2PAK (TO-263) 500mA Surface Mount - 26 V 3 1 Positive - ±5% -40 °C
RS Stock No. 145-0634
Mfr. Part No.LM1117T-2.5/NOPB
SGD1.093
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. 884-2556
Mfr. Part No.LT1963AET#PBF
SGD8.075
Each (In a Pack of 2)
units
- 1.21 → 20 V Adjustable TO-220 1.5A Through Hole 2.5 V 20 V 5 1 Positive 1µA - -40 °C
RS Stock No. 153-3330
Mfr. Part No.LT1763CS8-3.3#PBF
SGD4.913
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. 178-7476
Mfr. Part No.TLE4266GHTMA1
BrandInfineon
SGD1.378
Each (On a Reel of 4000)
units
- 4.9 → 5.1 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 150mA - -40 °C
RS Stock No. 885-0730
Mfr. Part No.HT7536-1-SOT89
BrandHoltek
SGD0.437
Each (In a Pack of 20)
units
- 3.6 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 661-4456
Mfr. Part No.TPS79133DBVT
SGD1.812
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 100mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 885-0721
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
SGD0.519
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 885-0718
Mfr. Part No.HT7521-1-SOT89
BrandHoltek
SGD0.437
Each (In a Pack of 20)
units
- 2.1 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 533-9319
Mfr. Part No.LM1084IT-3.3/NOPB
SGD3.03
Each
units
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
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