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. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
$0.712
Each (On a Reel of 1000)
units
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 153-3325
Mfr. Part No.LT1761ES5-5#TRMPBF
$2.639
Each (On a Reel of 500)
units
- 5 V Fixed TSOT-23 100mA Surface Mount 1.8 V 20 V 5 1 Positive 0.02mA - -40 °C
RS Stock No. 145-5223
Mfr. Part No.LM2931ADT-5.0RKG
$0.443
Each (On a Reel of 2500)
units
- 5 V Fixed DPAK 100mA Surface Mount - 40 V dc 3 1 Positive 0.4mA ±3.8% -40 °C
RS Stock No. 889-5519
Mfr. Part No.MCP1804T-5002I/OT
BrandMicrochip
$0.654
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 150mA Surface Mount 2 V 28 V 5 1 Positive 0.05mA ±2% -40 °C
RS Stock No. 146-2241
Mfr. Part No.TS5205CX533 RFG
$0.211
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-25 150mA Surface Mount 2.5 V 16 V 5 1 Positive 0.00001mA ±1.5% -40 °C
RS Stock No. 805-1359
Mfr. Part No.LM2931ADT-5.0RKG
$0.764
Each (In a Pack of 20)
units
- 5 V Fixed DPAK 100mA Surface Mount - 40 V dc 3 1 Positive 0.4mA ±3.8% -40 °C
RS Stock No. 686-9767
Mfr. Part No.LD1117V33C
$0.663
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 858-0838
Mfr. Part No.LT1084CT-12#PBF
$15.12
Each
units
- 11.76 → 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 155-9378
Mfr. Part No.LT1084CT-12#PBF
$10.231
Each (In a Tube of 50)
units
- 11.76 → 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 704-7633
Mfr. Part No.MCP1804T-5002I/OT
BrandMicrochip
$1.00
Each
units
- 5 V Fixed SOT-23 150mA Surface Mount 2 V 28 V 5 1 Positive 0.05mA ±2% -40 °C
RS Stock No. 411-895
Mfr. Part No.LT1761ES5-5#TRMPBF
$4.094
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
RS Stock No. 398-708
Mfr. Part No.TS5205CX533 RFG
$0.251
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-25 150mA Surface Mount 2.5 V 16 V 5 1 Positive 0.00001mA ±1.5% -40 °C
RS Stock No. 168-6597
Mfr. Part No.LD1117V33C
$0.582
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 165-2186
Mfr. Part No.MCP1703AT-3302E/MB
BrandMicrochip
$0.716
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-89 250mA Surface Mount 2.7 V 16 V 3 1 Positive 5µA 2% -40 °C
RS Stock No. 170-9150
Mfr. Part No.HT7530-1-SOT89
BrandHoltek
$0.552
Each (On a Reel of 1000)
units
- 3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 917-3453
Mfr. Part No.LT3080EST#PBF
$4.356
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. 403-783
Mfr. Part No.MCP1725-3302E/SN
BrandMicrochip
$0.762
Each (In a Pack of 5)
units
- 3.3 V Fixed SOIC 500mA Surface Mount 2.3 V 6 V 8 1 Positive 0.12mA ±2% -40 °C
RS Stock No. 889-6070
Mfr. Part No.MCP1754ST-3302E/CB
BrandMicrochip
$0.352
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23A 150mA Surface Mount 3.3 V 16 V 3 1 Positive 56µA 2% -40 °C
RS Stock No. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
$2.76
Each
units
- 3.3 V Fixed TO-220 1.5A Through Hole 2.6 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 910-1442
Mfr. Part No.MIC5200-5.0YS
BrandMicrochip
$1.52
Each (In a Pack of 10)
units
- 5 V Fixed SOT-223 100mA Surface Mount 2.5 V 26 V 3+Tab 1 Positive - ±1% -40 °C
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