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. 145-5869
Mfr. Part No.LT1084CT#PBF
HK$58.232
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. 858-0835
Mfr. Part No.LT1084CT#PBF
HK$89.85
Each
units
- 1.25 → 25 V Adjustable TO-220 5A Through Hole - 30 V 3 1 Positive - - 0 °C
RS Stock No. 533-9577
Mfr. Part No.LM1117MP-3.3/NOPB
HK$7.24
Each
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 4 1 - - ±1% 0 °C
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
HK$4.528
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 145-5966
Mfr. Part No.LT1085CT#PBF
HK$48.575
Each (In a Tube of 50)
units
- 1.25 → 28.5 V Adjustable TO-220 3A Through Hole 2.55 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 545-4884
Mfr. Part No.LT1085CT#PBF
HK$74.93
Each
units
- 1.25 → 28.5 V Adjustable TO-220 3A Through Hole 2.55 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 779-9038
Mfr. Part No.LT1084IT#PBF
HK$110.24
Each
units
- 1.25 → 28.5 V Adjustable TO-220 5A Through Hole 1.5 V 30 V 3 1 Positive 10mA - -40 °C
RS Stock No. 145-6800
Mfr. Part No.LT1084IT#PBF
HK$73.224
Each (In a Tube of 50)
units
- 1.25 → 28.5 V Adjustable TO-220 5A Through Hole 1.5 V 30 V 3 1 Positive 10mA - -40 °C
RS Stock No. 165-1898
Mfr. Part No.TC1055-2.7VCT713
BrandMicrochip
HK$2.379
Each (On a Reel of 3000)
units
- 2.7 V Fixed SOT-23 100mA Surface Mount 2.7 V 6.5 V 5 1 Positive - ±0.5% -40 °C
RS Stock No. 823-4355
Mfr. Part No.TC1055-2.7VCT713
BrandMicrochip
HK$3.08
Each (In a Pack of 20)
units
- 2.7 V Fixed SOT-23 100mA Surface Mount 2.7 V 6.5 V 5 1 Positive - ±0.5% -40 °C
RS Stock No. 162-4712
Mfr. Part No.LM2936Z-3.3/NOPB
HK$8.055
Each (In a Box of 1800)
units
- 3.3 V Fixed TO-92 50mA Through Hole 4 V 40 V 3 1 Positive - ±2% -40 °C
RS Stock No. 504-5070
Mfr. Part No.LM2936Z-3.3/NOPB
HK$17.03
Each (In a Pack of 5)
units
- 3.3 V Fixed TO-92 50mA Through Hole 4 V 40 V 3 1 Positive - ±2% -40 °C
RS Stock No. 809-5407
Mfr. Part No.TLV1117-33IDCY
HK$5.82
Each (In a Pack of 20)
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. 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. 124-5372
Mfr. Part No.NCP705MT30TCG
HK$2.503
Each (On a Reel of 3000)
units
- 3 V Fixed WDFN 950mA Surface Mount 1.8 V 5.5 V 6 1 Positive 25µA ±2% -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. 806-2059
Mfr. Part No.MC33269ST-3.3T3G
HK$6.38
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 20 V 3+Tab 1 Positive 8mA ±1% -40 °C
RS Stock No. 661-3778
Mfr. Part No.TLV1117-33IDCYR
HK$5.108
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount 4.7 V 15 V 3+Tab 1 Positive 5mA - -40 °C
RS Stock No. 698-9044
Mfr. Part No.MCP1700T-3302E/TT
BrandMicrochip
HK$3.27
Each
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. 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
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