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. 146-0950
Mfr. Part No.AZ1117H-3.3TRE1
HK$0.837
Each (On a Reel of 4000)
units
- 3.3 V Fixed SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 1% -40 °C
RS Stock No. 921-0701
Mfr. Part No.AZ1117H-3.3TRE1
HK$2.802
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 1% -40 °C
RS Stock No. 822-8874
Mfr. Part No.AP7331-33WG-7
HK$3.04
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-25 300mA Surface Mount 2 V 6 V 5 1 Positive 85µA ±2% -40 °C
RS Stock No. 121-9606
Mfr. Part No.AP7331-33WG-7
HK$1.06
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-25 300mA Surface Mount 2 V 6 V 5 1 Positive 85µA ±2% -40 °C
RS Stock No. 921-0584
Mfr. Part No.AP7175SP-13
HK$6.534
Each (In a Pack of 10)
units
- 0.8 → 3.1 V Adjustable SO-8EP 4A Surface Mount 1.2 V 3.65 V 8 2 Positive - ±1.5% -40 °C
RS Stock No. 828-7589
Mfr. Part No.AZ1085CD-ADJTRG1
HK$3.34
Each (In a Pack of 20)
units
- - Adjustable TO-252 3A Surface Mount - 12 V 3 1 Positive 10mA - 0 °C
RS Stock No. 122-2330
Mfr. Part No.AP7332-3333W6-7
HK$2.40
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-26 300mA Surface Mount 2 V 6 V 6 2 Positive 80µA ±2% -40 °C
RS Stock No. 122-3353
Mfr. Part No.AP2125N-3.3TRG1
HK$0.534
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 - Surface Mount - 6 V 3 1 Positive 90µA ±2% -40 °C
RS Stock No. 121-9654
Mfr. Part No.AZ1117CR-3.3TRG1
HK$0.839
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-89 800mA Surface Mount - 15 V 3 1 Positive 6mA ±1% -20 °C
RS Stock No. 122-3355
Mfr. Part No.AP2128K-3.3TRG1
HK$0.667
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 - Surface Mount 2.5 V 6 V 5 1 Positive 90µA ±2% -40 °C
RS Stock No. 828-7356
Mfr. Part No.AP2125N-3.3TRG1
HK$1.15
Each (In a Pack of 100)
units
- 3.3 V Fixed SOT-23 - Surface Mount - 6 V 3 1 Positive 90µA ±2% -40 °C
RS Stock No. 822-8871
Mfr. Part No.AP7332-3333W6-7
HK$4.79
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-26 300mA Surface Mount 2 V 6 V 6 2 Positive 80µA ±2% -40 °C
RS Stock No. 165-8343
Mfr. Part No.AZ1117H-ADJTRE1
HK$0.87
Each (On a Reel of 4000)
units
- 1.25 → 12 V Adjustable SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 2% -40 °C
RS Stock No. 170-8930
Mfr. Part No.AZ1085CD-ADJTRG1
HK$1.34
Each (On a Reel of 2500)
units
- - Adjustable TO-252 3A Surface Mount - 12 V 3 1 Positive 10mA - 0 °C
RS Stock No. 828-7378
Mfr. Part No.AP2127N-3.3TRG1
HK$1.15
Each (In a Pack of 100)
units
- 3.3 V Fixed SOT-23 - Surface Mount 2.5 V 6 V 3 1 Positive 90µA ±2% -40 °C
RS Stock No. 146-0452
Mfr. Part No.AZ1117CH-1.2TRG1
HK$0.676
Each (On a Reel of 4000)
units
- 1.2 V Fixed SOT-223 300mA Surface Mount - 15 V 3+Tab 1 Positive 6mA - -20 °C
RS Stock No. 921-0708
Mfr. Part No.AZ1117H-ADJTRE1
HK$2.802
Each (In a Pack of 50)
units
- 1.25 → 12 V Adjustable SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 2% -40 °C
RS Stock No. 828-7606
Mfr. Part No.AZ1117CR-3.3TRG1
HK$2.38
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-89 800mA Surface Mount - 15 V 3 1 Positive 6mA ±1% -20 °C
RS Stock No. 121-9651
Mfr. Part No.AP2127N-3.3TRG1
HK$0.667
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 - Surface Mount 2.5 V 6 V 3 1 Positive 90µA ±2% -40 °C
RS Stock No. 828-7371
Mfr. Part No.AP2128K-3.3TRG1
HK$1.15
Each (In a Pack of 100)
units
- 3.3 V Fixed SOT-23 - Surface Mount 2.5 V 6 V 5 1 Positive 90µA ±2% -40 °C