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. 652-0033
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR3.66
Each
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 102-5640
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR1.473
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 165-5967
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR1.714
Each (On a Reel of 2500)
units
- 2.5 → 20 V Adjustable TO-252 400mA Surface Mount 4.5 V 40 V 5 1 Positive 220µA ±2% -40 °C
RS Stock No. 827-5085
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR3.47
Each (In a Pack of 25)
units
- 2.5 → 20 V Adjustable TO-252 400mA Surface Mount 4.5 V 40 V 5 1 Positive 220µA ±2% -40 °C
RS Stock No. 170-3507
Mfr. Part No.NCP508SQ18T1G
MYR0.49
Each (On a Reel of 3000)
units
- 1.8 V Fixed SC-70 50mA Surface Mount - 13 V 5 1 Positive 1µA ±3% -40 °C
RS Stock No. 785-7232
Mfr. Part No.NCP508SQ18T1G
MYR1.44
Each (On a Tape of 20)
units
- 1.8 V Fixed SC-70 50mA Surface Mount - 13 V 5 1 Positive 1µA ±3% -40 °C
RS Stock No. 163-0770
Mfr. Part No.NCV8664DT50RKG
MYR3.397
Each (On a Reel of 2500)
units
- 5 V Fixed DPAK 150mA Surface Mount 4.5 V 45 V 3 1 Positive 30µA ±2% -40 °C
RS Stock No. 100-5964
Mfr. Part No.LP2950CZ-5.0/NOPB
MYR2.658
Each (On a Reel of 1800)
units
- 5 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 534-4939
Mfr. Part No.LP2950CZ-5.0/NOPB
MYR3.35
Each
units
- 5 V Fixed TO-92 100mA Through Hole - 30 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 809-9809
Mfr. Part No.ADP7104ARDZ-R7
MYR18.77
Each (In a Pack of 2)
units
- 1.22 → 19 V Adjustable SOIC 500mA Surface Mount 3.3 V 20 V 8 1 Positive 1mA 1.232V -40 °C
RS Stock No. 160-3383
Mfr. Part No.ADP7104ARDZ-R7
MYR14.605
Each (On a Reel of 1000)
units
- 1.22 → 19 V Adjustable SOIC 500mA Surface Mount 3.3 V 20 V 8 1 Positive 1mA 1.232V -40 °C
RS Stock No. 761-5602
Mfr. Part No.LM2937IMP-8.0/NOPB
MYR7.20
Each (On a Tape of 5)
units
- 8 V Fixed SOT-223 400mA Surface Mount 0 V 26 V 3+Tab 1 Positive 20mA 5% -40 °C
RS Stock No. 162-6221
Mfr. Part No.LM2937IMP-8.0/NOPB
MYR7.293
Each (On a Reel of 1000)
units
- 8 V Fixed SOT-223 400mA Surface Mount 0 V 26 V 3+Tab 1 Positive 20mA 5% -40 °C
RS Stock No. 858-0832
Mfr. Part No.LT1084CT-5#PBF
MYR42.62
Each
units
- 4.9 → 5.1 V Fixed TO-220 5A Through Hole - 20 V 3 1 Positive 10mA - 0 °C
RS Stock No. 661-4501
Mfr. Part No.TPS79601KTTT
MYR18.04
Each
units
- 1.2 → 5.5 V Adjustable D2PAK (TO-263) 1A Surface Mount 2.7 V 5.5 V 5 1 Positive 0.265mA ±2% -40 °C
RS Stock No. 795-8776
Mfr. Part No.LD1086D2M33TR
MYR3.10
Each (In a Pack of 10)
units
- 3.3 V Fixed D2PAK 1.5A Surface Mount - 30 V 3 1 Positive 10mA ±1% -40 °C
RS Stock No. 155-9377
Mfr. Part No.LT1084CT-5#PBF
MYR29.095
Each (In a Tube of 50)
units
- 4.9 → 5.1 V Fixed TO-220 5A Through Hole - 20 V 3 1 Positive 10mA - 0 °C
RS Stock No. 165-6864
Mfr. Part No.LD1086D2M33TR
MYR1.612
Each (On a Reel of 1000)
units
- 3.3 V Fixed D2PAK 1.5A Surface Mount - 30 V 3 1 Positive 10mA ±1% -40 °C
RS Stock No. 889-5938
Mfr. Part No.MCP1703T-5002E/CB
BrandMicrochip
MYR1.73
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23A 250mA Surface Mount 2.7 V 16 V 3 1 Positive 5µA ±2% -40 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
MYR0.556
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