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. 145-6867
Mfr. Part No.LT1763CS8#PBF
TWD89.30
Each (In a Tube of 100)
units
- 1.22 → 20 V Adjustable SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 411-968
Mfr. Part No.LT1763CS8#PBF
TWD173.00
Each
units
- 1.22 → 20 V Adjustable SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 640-4953
Mfr. Part No.LT1763CS8#PBF
TWD170.00
Each
units
- 1.22 → 20 V Adjustable SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 785-7279
Mfr. Part No.NCP551SN30T1G
TWD13.80
Each (On a Tape of 10)
units
- 3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 153-3422
Mfr. Part No.LT1086CT-5#PBF
TWD98.40
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 1.5A Through Hole - 20 V 3 1 Positive 5mA - 0 °C
RS Stock No. 411-952
Mfr. Part No.LT1764AEQ#PBF
TWD295.00
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. 153-3321
Mfr. Part No.LT1964ES5-BYP#TRMPBF
TWD61.90
Each (On a Reel of 500)
units
- -20 → -1.22 V Adjustable TSOT-23 200mA Surface Mount 0 V 40 V 5 1 Negative 0.03mA - -40 °C
RS Stock No. 661-4444
Mfr. Part No.TPS79101DBVR
TWD45.80
Each (In a Pack of 5)
units
- 1.2 → 5.5 V Adjustable SOT-23 100mA Surface Mount 2.7 V 5.5 V 6 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 162-9536
Mfr. Part No.NCP551SN30T1G
TWD5.60
Each (On a Reel of 3000)
units
- 3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 761-4609
Mfr. Part No.LM2940IMP-12/NOPB
TWD50.20
Each (In a Pack of 5)
units
- 12 V Fixed SOT-223 1A Surface Mount 13.6 V 26 V 3+Tab 1 Positive 20mA - -40 °C
RS Stock No. 162-6222
Mfr. Part No.LM2940IMP-12/NOPB
TWD24.90
Each (On a Reel of 1000)
units
- 12 V Fixed SOT-223 1A Surface Mount 13.6 V 26 V 3+Tab 1 Positive 20mA - -40 °C
RS Stock No. 545-5742
Mfr. Part No.LT1086CT-5#PBF
TWD178.00
Each
units
- 5 V Fixed TO-220 1.5A Through Hole - 20 V 3 1 Positive 5mA - 0 °C
RS Stock No. 411-863
Mfr. Part No.LT1964ES5-BYP#TRMPBF
TWD121.00
Each
units
- -20 → -1.22 V Adjustable TSOT-23 200mA Surface Mount 0 V 40 V 5 1 Negative 0.03mA - -40 °C
RS Stock No. 910-1685
Mfr. Part No.MIC5219-3.3YM5-TR
BrandMicrochip
TWD29.60
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 500mA Surface Mount 2.5 V 12 V 5 1 Positive 8µA ±2% -40 °C
RS Stock No. 809-9944
Mfr. Part No.ADP1706ARDZ-3.3-R7
TWD95.40
Each (In a Pack of 5)
units
- 3.3 V Fixed SOIC 1A Surface Mount 2.5 V 5.5 V 8 2 Positive - ±2.5% -40 °C
RS Stock No. 165-4039
Mfr. Part No.MIC5219-3.3YM5-TR
BrandMicrochip
TWD21.60
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 500mA Surface Mount 2.5 V 12 V 5 1 Positive 8µA ±2% -40 °C
RS Stock No. 640-4981
Mfr. Part No.LT1764AEQ#PBF
TWD257.00
Each
units
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 1.7 V 20 V 6 1 - 1mA - -40 °C
RS Stock No. 517-1438
Mfr. Part No.TPS76950DBVT
TWD33.60
Each (In a Pack of 5)
units
- 5 V Fixed SOT-23 100mA Surface Mount 2.7 V 10 V 5 1 Positive 0.017mA ±3% -40 °C
RS Stock No. 178-8968
Mfr. Part No.TPS76950DBVT
TWD14.40
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 100mA Surface Mount 2.7 V 10 V 5 1 Positive 0.017mA ±3% -40 °C
RS Stock No. 165-5515
Mfr. Part No.LDS3985M33R
TWD9.30
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 6 V 5 1 Positive 1.5 (OFF Mode) μA, 300 (ON Mode) μA - -40 °C