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. 163-1016
Mfr. Part No.NCP5661DT33RKG
SGD0.842
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. 732-8087
Mfr. Part No.MAX8556ETE+
SGD13.46
Each
units
- 0.5 → 3.4 V Adjustable QFN 4A Surface Mount 1.425 V 3.6 V 16 1 Positive 0.8mA ±1% -40 °C
RS Stock No. 154-6356
Mfr. Part No.LT1965IMS8E#PBF
SGD5.414
Each (In a Tube of 50)
units
- 1.2 19.5 V Adjustable MSOP 1.1A Surface Mount 1.8 V 20 V 8 1 Positive 0.5mA - -40 °C
RS Stock No. 411-952
Mfr. Part No.LT1764AEQ#PBF
SGD12.57
Each
units
- 1.21 20 V Adjustable D2PAK 3A Surface Mount 2.7 V 20 V 5 1 Positive 1mA - -40 °C
RS Stock No. 809-9900
Mfr. Part No.ADP1755ACPZ-R7
SGD4.028
Each (In a Pack of 5)
units
- 0.75 → 3.3 V Adjustable LFCSP 1.2A Surface Mount 1.6 V 3.6 V 16 5 Positive - 0.51V -40 °C
RS Stock No. 160-2566
Mfr. Part No.ADP1720ARMZ-5-R7
SGD1.694
Each (On a Reel of 1000)
units
- 5 V Fixed MSOP 50mA Surface Mount 4 V 28 V 8 1 Positive 28µA ±2% -40 °C
RS Stock No. 162-5224
Mfr. Part No.REG102UA-5
SGD4.047
Each (In a Tube of 75)
units
- 5 V Fixed SOIC 250mA Surface Mount 1.8 V 10 V 8 1 Positive - ±1.5% -40 °C
RS Stock No. 162-9069
Mfr. Part No.NCP511SN33T1G
SGD0.28
Each (On a Reel of 3000)
units
- 3.3 V Fixed TSOP - Surface Mount 0 V 6 V 5 1 Positive 100µA 2% -40 °C
RS Stock No. 170-9150
Mfr. Part No.HT7530-1-SOT89
BrandHoltek
SGD0.619
Each (On a Reel of 1000)
units
- 3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 145-5966
Mfr. Part No.LT1085CT#PBF
SGD8.451
Each (In a Tube of 50)
units
- 1.25 28.5 V Adjustable TO-220 3A Through Hole 2.55 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 162-5145
Mfr. Part No.LP3966ES-3.3/NOPB
SGD6.598
Each (In a Tube of 45)
units
- - - - - - - - - - - - - -
RS Stock No. 170-3497
Mfr. Part No.MC33275DT-5.0G
SGD1.137
Each (In a Tube of 75)
units
- 5 V Fixed DPAK 300mA Surface Mount - 13 V 3 1 Positive 200µA - -40 °C
RS Stock No. 828-7343
Mfr. Part No.AP2125K-3.3TRG1
SGD0.198
Each (In a Pack of 100)
units
- 3.3 V Fixed SOT-23 - Surface Mount - 6 V 5 1 Positive 90µA ±2% -40 °C
RS Stock No. 177-3351
Mfr. Part No.MIC5225-3.3YM5-TR
BrandMicrochip
SGD0.565
Each (In a Pack of 25)
units
450 mV @ 150 mA 3.3 V Fixed SOT-23 150mA Surface Mount 2.3 V 16 V 5 1 - - ±2% -40 °C
RS Stock No. 518-8284
Mfr. Part No.NCP1117DT18RKG
SGD0.65
Each (In a Pack of 5)
units
- 1.8 V Fixed DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
New
RS Stock No. 195-2581
Mfr. Part No.NIS5021MT1TXG
SGD2.082
Each (On a Reel of 3000)
units
- - - WDFN - Surface Mount 13 V 15 V 10 1 Negative, Positive - - -40 °C
RS Stock No. 146-7650
Mfr. Part No.BU19TD3WG-TR
BrandROHM
SGD0.483
Each (In a Pack of 50)
units
540mV 1.9 V Fixed SSOP 200mA Surface Mount 1.7 V 6 V 5 1 Positive - ±1% -40 °C
RS Stock No. 920-9821
Mfr. Part No.NCP186AMX330TAG
SGD0.527
Each (In a Pack of 25)
units
- 3.3 V Fixed XDFN 1A Surface Mount 1.8 V 5.5 V 8 1 Positive 140µA ±1% -
RS Stock No. 655-0725
Mfr. Part No.LM2936MM-3.3/NOPB
SGD2.852
Each (In a Pack of 5)
units
- 3.3 V Fixed MSOP 50mA Surface Mount 4 V 40 V 8 1 Positive - ±2% -40 °C
RS Stock No. 168-4893
Mfr. Part No.ADP7157ARDZ-02-R7
SGD8.948
Each (On a Reel of 1000)
units
- 1.2 → 2.3 V Adjustable SOIC 1.2A Surface Mount 2.8 V 5.5 V 8 1 Positive - ±0.6% -40 °C
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