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. 423-557
Mfr. Part No.LT3080EST#PBF
PHP224.46
Each
units
- 0 → 30 V Adjustable SOT-223 1.1A Surface Mount 1.2 V 36 V 3+Tab 1 Positive - - -40 °C
RS Stock No. 917-3453
Mfr. Part No.LT3080EST#PBF
PHP156.022
Each (In a Tube of 78)
units
- 0 → 30 V Adjustable SOT-223 1.1A Surface Mount 1.2 V 36 V 3+Tab 1 Positive - - -40 °C
RS Stock No. 919-9045
Mfr. Part No.LT1117CST-3.3PBF
PHP173.209
Each (In a Tube of 78)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive 10mA - 0 °C
RS Stock No. 153-3423
Mfr. Part No.LT1086CT-12#PBF
PHP157.794
Each (In a Tube of 50)
units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 396-449
Mfr. Part No.LT3014EDD#PBF
PHP134.815
Each (In a Pack of 2)
units
- 1.22 → 60 V Adjustable DFN 20mA Surface Mount 3 V 80 V 8 1 Positive 0.007mA - -40 °C
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
PHP184.96
Each
units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 761-8052
Mfr. Part No.LT1117CST-3.3#PBF
PHP236.22
Each
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive 10mA - 0 °C
RS Stock No. 153-3311
Mfr. Part No.LT3014EDD#PBF
PHP117.479
Each (In a Tube of 121)
units
- 1.22 → 60 V Adjustable DFN 20mA Surface Mount 3 V 80 V 8 1 Positive 0.007mA - -40 °C
RS Stock No. 759-0437
Mfr. Part No.ADP125ARHZ
PHP88.54
Each (In a Pack of 5)
units
- 0.8 → 5 V Adjustable MSOP 500mA Surface Mount 2.3 V 5.5 V 8 5 Positive 0.045mA ±1% -40 °C
RS Stock No. 809-9935
Mfr. Part No.ADP1710AUJZ-1.2-R7
PHP53.412
Each (In a Pack of 5)
units
- 1.2 V Fixed TSOT 150mA Surface Mount 2.5 V 5.5 V 5 1 Positive - ±2% -40 °C
RS Stock No. 858-0835
Mfr. Part No.LT1084CT#PBF
PHP378.71
Each
units
- 1.25 → 25 V Adjustable TO-220 5A Through Hole - 30 V 3 1 Positive - - 0 °C
RS Stock No. 160-2572
Mfr. Part No.ADP1710AUJZ-1.2-R7
PHP36.748
Each (On a Reel of 3000)
units
- 1.2 V Fixed TSOT 150mA Surface Mount 2.5 V 5.5 V 5 1 Positive - ±2% -40 °C
RS Stock No. 145-5869
Mfr. Part No.LT1084CT#PBF
PHP318.307
Each (In a Tube of 50)
units
- 1.25 → 25 V Adjustable TO-220 5A Through Hole - 30 V 3 1 Positive - - 0 °C
RS Stock No. 914-0475
Mfr. Part No.ADP125ARHZ-R7
PHP63.974
Each (On a Reel of 1000)
units
- 0.8 → 5 V Adjustable MSOP 500mA Surface Mount 2.3 V 5.5 V 8 2 - 210µA ±1% -40 °C
RS Stock No. 155-9383
Mfr. Part No.LT1964IS5-5#TRMPBF
PHP132.22
Each (On a Reel of 500)
units
- -5 V Fixed SOT-23 200mA Surface Mount - -2.2 V 5 1 Negative 30µA - -40 °C
RS Stock No. 160-2614
Mfr. Part No.ADP121-AUJZ30R7
PHP19.231
Each (On a Reel of 3000)
units
- 3 V Fixed TSOT 150mA Surface Mount 2.3 V 5.5 V 5 1 Positive 30µA ±3% -40 °C
RS Stock No. 156-5707
Mfr. Part No.LT3013EFE#PBF
PHP192.14
Each (In a Tube of 96)
units
- 1.24 → 60 V Adjustable TSSOP 250mA Surface Mount 4 V 80 V 16 1 Positive 65µA - -40 °C
RS Stock No. 809-9825
Mfr. Part No.ADP5040ACPZ-1-R7
PHP120.20
Each (In a Pack of 2)
units
- 3.8 (Buck) V, 5.2 (LDO) V Fixed LFCSP WQ 1.2 A, 300 mA Surface Mount 2.3 V 5.5 V 20 3 Positive 10µA ±3% -40 °C
RS Stock No. 145-5729
Mfr. Part No.LT1764EQ#PBF
PHP291.102
Each (In a Tube of 50)
units
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 2.7 V 20 V 6 1 Positive 1mA - -40 °C
RS Stock No. 411-895
Mfr. Part No.LT1761ES5-5#TRMPBF
PHP107.642
Each (In a Pack of 5)
units
- 5 V Fixed TSOT-23 100mA Surface Mount 1.8 V 20 V 5 1 Positive 0.02mA - -40 °C