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. 887-7429
Mfr. Part No.MCP1700T-3302E/TT
BrandMicrochip
HK$2.352
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 250mA Surface Mount 2.3 V 6 V 3 1 Positive 0.0016mA ±2% -40 °C
RS Stock No. 145-0932
Mfr. Part No.TLV1117-33IDCY
HK$5.704
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. 145-6047
Mfr. Part No.LT1763CS8-5#PBF
HK$27.548
Each (In a Tube of 100)
units
- 5 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 30µA - -40 °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. 535-8663
Mfr. Part No.LM1117IMP-ADJ/NOPB
HK$9.426
Each (In a Pack of 5)
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. 422-485
Mfr. Part No.TPS71812-33DRVT
HK$16.102
Each (In a Pack of 5)
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. 802-2130
Mfr. Part No.NCP1117ST50T3G
HK$3.273
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. 145-6887
Mfr. Part No.TPS71812-33DRVT
HK$10.986
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. 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$38.57
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. 162-4782
Mfr. Part No.LMS1587CS-3.3/NOPB
HK$21.05
Each (In a Tube of 45)
units
- - - - - - - - - - - - - -
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
HK$4.259
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. 122-0131
Mfr. Part No.NCP59151MN50TYG
HK$7.809
Each (On a Reel of 4000)
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. 714-0697
Mfr. Part No.LD1117S33TR
HK$2.832
Each (In a Pack of 10)
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
RS Stock No. 817-5408
Mfr. Part No.TPS73801DCQR
HK$24.49
Each (In a Pack of 5)
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. 460-859
Mfr. Part No.LM2931AT-5.0/NOPB
HK$11.068
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. 534-4608
Mfr. Part No.LMS1587CS-3.3/NOPB
HK$23.48
Each
units
- 3.3 V Fixed D2PAK (TO-263) 3A Surface Mount 2.4 V 13 V 3 1 Positive - - 0 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
HK$1.137
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. 857-8845
Mfr. Part No.TLE42764GV50ATMA1
BrandInfineon
HK$8.944
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
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