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. 145-0932
Mfr. Part No.TLV1117-33IDCY
HK$5.82
Each (In a Tube of 80)
units
- 3.365 V Fixed SOT-223 800mA Surface Mount 4.7 V 15 V 3+Tab 1 Positive 15mA - -40 °C
RS Stock No. 779-9423
Mfr. Part No.LT1763CS8-5#PBF
HK$41.18
Each (In a Pack of 2)
units
- 5 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 30µA - -40 °C
RS Stock No. 827-0591
Mfr. Part No.NCP705MT30TCG
HK$5.49
Each (In a Pack of 20)
units
- 3 V Fixed WDFN 950mA Surface Mount 1.8 V 5.5 V 6 1 Positive 25µA ±2% -40 °C
RS Stock No. 661-3974
Mfr. Part No.TPS73201DBVR
HK$12.66
Each (In a Pack of 5)
units
- 1.2 → 5.5 V Adjustable SOT-23 250mA Surface Mount 1.7 V 5.5 V 5 1 Positive - ±0.5% -40 °C
RS Stock No. 922-3397
Mfr. Part No.TLV1117-33IDCYR
HK$2.092
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 145-6887
Mfr. Part No.TPS71812-33DRVT
HK$11.21
Each (On a Reel of 250)
units
- 1.2 V, 3.3 V Fixed SON 200mA Surface Mount 2.7 V 6.5 V 6 2 Positive 0.09mA ±2.5% -40 °C
RS Stock No. 769-5790
Mfr. Part No.NCP59151MN50TYG
HK$16.43
Each
units
- 5 V Fixed DFN 1.5A Surface Mount 2.24 V 13.5 V 8 1 Positive 80mA ±2% -40 °C
RS Stock No. 124-5349
Mfr. Part No.NCP1117ST50T3G
HK$1.339
Each (On a Reel of 4000)
units
- 5 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS Stock No. 460-859
Mfr. Part No.LM2931AT-5.0/NOPB
HK$11.15
Each (In a Pack of 5)
units
- 5 V Fixed TO-220 100mA Through Hole - - 3 1 Positive - ±3.8% -40 °C
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
HK$4.29
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. 178-9233
Mfr. Part No.LM2931AT-5.0/NOPB
HK$12.228
Each (In a Tube of 45)
units
- 5 V Fixed TO-220 100mA Through Hole - - 3 1 Positive - ±3.8% -40 °C
RS Stock No. 761-8611
Mfr. Part No.LT3080EDD#PBF
HK$38.82
Each
units
- 0 → 30 V Adjustable DFN 1.1A Surface Mount 1.2 V 36 V 8 1 Positive 1mA 1% -40 °C
RS Stock No. 162-8417
Mfr. Part No.TPS73801DCQR
HK$24.379
Each (On a Reel of 2500)
units
- 1.21 → 20 V Adjustable SOT-223 1A Surface Mount 2.2 V 20 V 5+Tab 1 Positive 1µA - -40 °C
RS Stock No. 802-2130
Mfr. Part No.NCP1117ST50T3G
HK$3.44
Each (In a Pack of 20)
units
- 5 V Fixed SOT-223 1A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% 0 °C
RS Stock No. 858-0838
Mfr. Part No.LT1084CT-12#PBF
HK$91.44
Each
units
- 11.76 → 12.24 V Fixed TO-220 5A Through Hole - 25 V 3 1 Positive 10mA - 0 °C
RS Stock No. 545-8381
Mfr. Part No.TPS79933DDCT
HK$7.80
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 200mA Surface Mount 2.7 V 6.5 V 5 1 Positive 0.04mA ±1% -40 °C
RS Stock No. 155-9378
Mfr. Part No.LT1084CT-12#PBF
HK$58.232
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. 857-8845
Mfr. Part No.TLE42764GV50ATMA1
BrandInfineon
HK$8.714
Each (On a Reel of 1000)
units
- 4.9 → 5.1 V Fixed D2PAK (TO-263) 1.1A Surface Mount 5.5 V 40 V 5 1 Positive 220µA ±2% -40 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
HK$1.16
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
RS Stock No. 145-6210
Mfr. Part No.LT3080EDD#PBF
HK$24.592
Each (In a Tube of 121)
units
- 0 → 30 V Adjustable DFN 1.1A Surface Mount 1.2 V 36 V 8 1 Positive 1mA 1% -40 °C
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