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. 805-1740
Mfr. Part No.NCV1117ST18T3G
HK$4.83
Each (In a Pack of 20)
units
- 1.8 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% -40 °C
RS Stock No. 145-1189
Mfr. Part No.LT1584CT#PBF
HK$74.822
Each (In a Tube of 50)
units
- - Adjustable TO-220 7A Through Hole 2.5 V 7 V 3 1 Positive 8mA - 0 °C
RS Stock No. 669-5207
Mfr. Part No.TC1014-2.5VCT713
BrandMicrochip
HK$2.592
Each (In a Pack of 10)
units
- 2.5 V Fixed SOT-23 50mA Surface Mount 2.7 V 6 V 5 1 Positive <0.0005mA ±2.5% -40 °C
RS Stock No. 100-5912
Mfr. Part No.LM1084IT-5.0/NOPB
HK$9.519
Each (In a Tube of 45)
units
- 5 V Fixed TO-220 5A Through Hole 2.6 V 25 V 3 1 Positive - - -40 °C
RS Stock No. 921-0701
Mfr. Part No.AZ1117H-3.3TRE1
HK$2.24
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 1% -40 °C
RS Stock No. 313-8316
Mfr. Part No.NJM2370U1-33
HK$4.758
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-89 180mA Surface Mount - 20 V 6 1 Positive 0.18mA 3% -40 °C
RS Stock No. 145-1188
Mfr. Part No.LT1085CT-5#PBF
HK$46.515
Each (In a Tube of 50)
units
- 5 V Fixed TO-220 3A Through Hole 4.3 V 25 V 3 1 Positive 5mA ±1% 0 °C
RS Stock No. 122-0130
Mfr. Part No.NCP4632DDT08T5G
HK$7.595
Each (On a Reel of 3000)
units
- 0.8 V Fixed DPAK 3A Surface Mount 1.6 V 5.25 V 5 1 Positive 450µA ±1% -40 °C
RS Stock No. 851-4601
Mfr. Part No.LT3015IQ#PBF
HK$59.99
Each (In a Pack of 2)
units
- -29.3 → -1.2 V Adjustable D2PAK 1.5A Surface Mount -1.8 V 30 V 5 1 Negative 1.1mA - -40 °C
RS Stock No. 761-6457
Mfr. Part No.LP2950CDT-3.3/NOPB
HK$10.148
Each (In a Pack of 5)
units
- 3.3 V Fixed TO-252 100mA Surface Mount -0.3 V 30 V 3 1 Positive 0.075mA - -40 °C
RS Stock No. 535-8635
Mfr. Part No.LM1117IMP-3.3/NOPB
HK$8.852
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 411-952
Mfr. Part No.LT1764AEQ#PBF
HK$66.93
Each
units
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 2.7 V 20 V 5 1 Positive 1mA - -40 °C
RS Stock No. 102-5680
Mfr. Part No.LM1117IMP-3.3/NOPB
HK$4.057
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 785-2568
Mfr. Part No.NCP630AD2TR4G
HK$10.406
Each (In a Pack of 5)
units
- 1.2 → 10.5 V Adjustable D2PAK 3A Surface Mount - 12 V 5 1 Positive - ±1.5% -40 °C
RS Stock No. 822-8874
Mfr. Part No.AP7331-33WG-7
HK$1.551
Each (In a Pack of 50)
units
- 3.3 V Fixed SOT-25 300mA Surface Mount 2 V 6 V 5 1 Positive 85µA ±2% -40 °C
RS Stock No. 162-6011
Mfr. Part No.TPS79330DBVR
HK$2.128
Each (On a Reel of 3000)
units
- 3 V Fixed SOT-23 200mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 170-9148
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
HK$2.961
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 545-4890
Mfr. Part No.LT1086CT#PBF
HK$41.34
Each
units
- - Adjustable TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 769-5769
Mfr. Part No.NCP4632DDT08T5G
HK$17.41
Each
units
- 0.8 V Fixed DPAK 3A Surface Mount 1.6 V 5.25 V 5 1 Positive 450µA ±1% -40 °C
RS Stock No. 885-0721
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
HK$2.828
Each (In a Pack of 20)
units
- 3.3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
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