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. 714-0697
Mfr. Part No.LD1117S33TR
HK$2.692
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
HK$1.07
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS Stock No. 165-7739
Mfr. Part No.LD1117AS12TR
HK$1.30
Each (On a Reel of 2500)
units
- 1.2 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 686-9331
Mfr. Part No.LD1117AS12TR
HK$4.285
Each (In a Pack of 25)
units
- 1.2 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 189-1374
Mfr. Part No.L4941BV
HK$9.12
Each
units
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS Stock No. 714-7799
Mfr. Part No.LD1086D2T33TR
HK$7.53
Each (In a Pack of 5)
units
- 3.3 V Fixed D2PAK 1.5A Surface Mount - 30 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9388
Mfr. Part No.LD1117S33CTR
HK$2.448
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 168-6051
Mfr. Part No.L4941BV
HK$6.03
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS Stock No. 165-7750
Mfr. Part No.LD1117S33CTR
HK$0.975
Each (On a Reel of 2500)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9690
Mfr. Part No.LD1085V50
HK$10.066
Each (In a Pack of 5)
units
- 5 V Fixed TO-220 3A Through Hole - 30 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 178-5051
Mfr. Part No.LD1085D2M-R
HK$5.038
Each (On a Reel of 1000)
units
- 1.25 → 28 V Adjustable D2PAK 3A Surface Mount - 30 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9262
Mfr. Part No.LD1117DT12TR
HK$3.139
Each (In a Pack of 25)
units
- 1.2 V Fixed DPAK 1.3A Surface Mount - 15 V 3 1 Positive - ±1% 0 °C
RS Stock No. 168-6582
Mfr. Part No.LD1085V50
HK$8.008
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 3A Through Hole - 30 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9195
Mfr. Part No.LD1085D2M-R
HK$10.228
Each (In a Pack of 5)
units
- 1.25 → 28 V Adjustable D2PAK 3A Surface Mount - 30 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 795-8965
Mfr. Part No.LD39015M33R
HK$5.398
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 1.5 V 5.5 V 5 1 Positive 70µA ±2% -40 °C
RS Stock No. 686-8802
Mfr. Part No.LD3985M33R
HK$4.684
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 550mA Surface Mount 2.5 V 6 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 298-8491
Mfr. Part No.L4940V5
HK$11.79
Each
units
- 5 V Fixed TO-220 1.5A Through Hole - 17 V 3 1 Positive 5mA - -40 °C
RS Stock No. 714-0701
Mfr. Part No.LF33CDT-TR
HK$5.688
Each (In a Pack of 5)
units
- 3.3 V Fixed DPAK 500mA Surface Mount - 16 V 3 1 Positive 0.5mA ±2% -40 °C
RS Stock No. 168-6489
Mfr. Part No.LD1085CDT-R
HK$3.677
Each (On a Reel of 2500)
units
- 1.25 → 28 V Adjustable DPAK 3A Surface Mount - 30 V 3 1 Positive - ±2% -40 °C
RS Stock No. 829-0371
Mfr. Part No.LDCL015MR
HK$8.01
Each (In a Pack of 10)
units
- 0.8 → 5 V Adjustable SOT-23 150mA Surface Mount 1.8 V 5.5 V 5 1 Positive 160µA ±3% -40 °C