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. 177-0350
Mfr. Part No.MIC29300-12WU
HK$23.83
Each (In a Tube of 50)
units
600 mV @ 3 A 12 V Fixed TO-263 3A Surface Mount -20 V 60 V 3 1 - - ±2% -40 °C
RS Stock No. 177-0370
Mfr. Part No.MIC2954-08YM
HK$10.139
Each (In a Tube of 95)
units
600 mV @ 250 mA 1.24 → 29 V Adjustable SOIC 250mA Surface Mount 2 V 30 V 8 1 - 120µA 1% -40 °C
RS Stock No. 177-0347
Mfr. Part No.MIC2920A-12WS
HK$9.053
Each (In a Tube of 78)
units
750 mV @ 400 mA 12 V Fixed SOT-223 400mA Surface Mount 2 V 26 V 3 + Tab 1 - 140µA ±3% -40 °C
RS Stock No. 177-0767
Mfr. Part No.MIC39101-3.3YM
HK$13.55
Each (In a Pack of 5)
units
630 mV @ 1 A 3.3 V Fixed SOIC 1A Surface Mount 2.25 V 16 V 8 1 - - ±2% -40 °C
RS Stock No. 177-2924
Mfr. Part No.MIC5366-1.8YC5-TR
HK$1.524
Each (On a Reel of 3000)
units
380 mV @ 150 mA 1.8 V Fixed SC-75 150mA Surface Mount 2.5 V 5.5 V 5 1 - 32µA ±3% -40 °C
RS Stock No. 177-0717
Mfr. Part No.MIC5280YME
HK$11.884
Each (In a Pack of 10)
units
1500 mV @ 25 mA 1.21 → 5 V Adjustable SOIC 25mA Surface Mount 4.5 V 120 V 8 1 - 31 (Typ.)µA ±3% -40 °C
RS Stock No. 177-0579
Mfr. Part No.MIC29150-5.0WT
HK$30.45
Each (In a Pack of 2)
units
600 mV @ 1.5 A 5 V Fixed TO-220 1.5A Through Hole -20 V 60 V 3 1 - - ±2% -40 °C
RS Stock No. 177-2840
Mfr. Part No.MCP1755T-3302E/OT
HK$3.38
Each (On a Reel of 3000)
units
500 mV @ 300 mA 3.3 V Fixed SOT-23 300mA Surface Mount 3.6 V 16 V 5 1 - 100µA - -40 °C
RS Stock No. 177-3183
Mfr. Part No.MIC38300HYHL-TR
HK$32.05
Each (In a Pack of 2)
units
550 mV @ 3 A - Adjustable MLF 3A Surface Mount 3 V 5.5 V 28 1 - 1mA - -40 °C
RS Stock No. 177-0847
Mfr. Part No.MIC29500-5.0WT
HK$77.61
Each
units
600 mV @ 5 A 5 V Fixed TO-220 5A Through Hole -20 V 60 V 3 1 - - ±2% -40 °C
RS Stock No. 177-2893
Mfr. Part No.MIC2920A-3.3WS-TR
HK$8.78
Each (On a Reel of 2500)
units
750 mV @ 100 mA 3.3 V Fixed SOT-223 400mA Surface Mount 2 V 26 V 3 1 - 140µA ±4% -40 °C
RS Stock No. 177-3303
Mfr. Part No.MCP1700T-3002E/MB
HK$2.721
Each (In a Pack of 25)
units
350 mV @ 250 mA 3 V Fixed SOT-89 250mA Surface Mount 2.3 V 6 V 3 1 - 4µA - -40 °C
RS Stock No. 177-0696
Mfr. Part No.MIC5239-5.0YMM
HK$23.05
Each (In a Pack of 5)
units
350 mV @ 500 mA 5 V Fixed MSOP 500mA Surface Mount 2.3 V 30 V 8 1 - 23µA ±2% -40 °C
RS Stock No. 177-0460
Mfr. Part No.MIC5239-3.3YMM
HK$17.50
Each (In a Tube of 100)
units
350 mV @ 500 mA 3.3 V Fixed MSOP 500mA Surface Mount 2.3 V 30 V 8 1 - 23µA ±2% -40 °C
RS Stock No. 177-3104
Mfr. Part No.MIC5233-3.3YS-TR
HK$5.673
Each (In a Pack of 20)
units
450 mV @ 100 mA 3.3 V Fixed SOT-223 100mA Surface Mount 2.3 V 36 V 3 1 - - ±2% -40 °C
RS Stock No. 177-0379
Mfr. Part No.MIC37252WR
HK$16.72
Each (In a Tube of 48)
units
1000 mV @ 2.5 A 1.24 → 5.5 V Adjustable SPAK 2.5A Surface Mount 3 V 6 V 5 1 - - ±3% -40 °C
RS Stock No. 177-1969
Mfr. Part No.MCP1755-3302E/MC
HK$4.828
Each (In a Pack of 20)
units
500 mV @ 300 mA 3.3 V Fixed DFN 300mA Surface Mount 3.6 V 16 V 8 1 - 100µA - -40 °C
RS Stock No. 177-3168
Mfr. Part No.MIC37302WR-TR
HK$18.51
Each (In a Pack of 5)
units
550 mV @ 3 A 5.5 V Adjustable SPAK 3A Surface Mount 2.25 V 6 V 5 1 - - ±2% -40 °C
RS Stock No. 177-0931
Mfr. Part No.MIC5209-2.5YS
HK$10.48
Each (In a Pack of 10)
units
600 mV @ 500 mA 2.5 V Fixed SOT-223 500mA Surface Mount 2.5 V 16 V 3 + Tab 1 - 8µA ±2% -40 °C
RS Stock No. 177-0359
Mfr. Part No.MIC29310-5.0WU
HK$18.829
Each (In a Tube of 50)
units
1000 mV @ 3 A 5 V Fixed TO-263 3A Surface Mount 2.3 V 16 V 3 1 - - ±2% 0 °C