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. 661-3661
Mfr. Part No.LP2985-18DBVT
kr 7,527
Each (In a Pack of 10)
Units
- 1.8 V Fixed SOT-23 150mA Surface Mount 2.2 V 16 V 5 1 Positive 0.85mA ±1.5% -40 °C
RS Stock No. 182-6811
Mfr. Part No.AP7384-50SA-7
kr 0,881
Each (On a Reel of 3000)
Units
500mV 5 V Fixed SOT-23 50mA Surface Mount 3.3 V 40 V 3 1 Positive 2.5µA - -40 °C
RS Stock No. 170-9147
Mfr. Part No.HT7521-1-SOT89
BrandHoltek
kr 2,243
Each (On a Reel of 1000)
Units
- 2.1 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 162-8829
Mfr. Part No.TPS79942DDCT
kr 5,374
Each (On a Reel of 250)
Units
- 4.2 V Fixed SOT-23 600mA Surface Mount 2.7 V 6.5 V 5 1 Positive 40µA 1% -40 °C
RS Stock No. 163-2641
Mfr. Part No.NCP694H12HT1G
kr 5,741
Each (On a Reel of 1000)
Units
- 1.2 V Fixed SOT-89 1A Surface Mount 1.4 V 6 V 5 1 Positive - - -40 °C
RS Stock No. 146-0453
Mfr. Part No.AZ1117D-3.3TRE1
kr 1,172
Each (On a Reel of 2500)
Units
- 3.3 V Fixed TO-252 1A Surface Mount - 15 V 3 1 Positive 10mA 1% -40 °C
RS Stock No. 809-1587
Mfr. Part No.LD1086DT50TR
kr 6,77
Each (In a Pack of 10)
Units
- 5 V Fixed DPAK 1.5A Surface Mount - 30 V 3 1 Positive 10mA - -40 °C
RS Stock No. 145-6796
Mfr. Part No.LT3021EDH#PBF
kr 31,92
Each (In a Tube of 73)
Units
- 0.2 → 9.5 V Adjustable DFN 500mA Surface Mount 0.9 V 10 V 16 1 Positive 0.12mA - -40 °C
RS Stock No. 190-8033
Mfr. Part No.MAX8887EZK18+T
kr 19,262
Each (In a Pack of 5)
Units
100 mV @ 200 mA 1.5 → 3.3 V Adjustable SOT-23 200mA Surface Mount 2.5 V 5.5 V 5 1 - - ±2% -40 °C
RS Stock No. 145-5701
Mfr. Part No.LM1117IDT-5.0/NOPB
kr 11,198
Each (In a Tube of 75)
Units
- 5 V Fixed TO-252 800mA Surface Mount - 15 V 3 1 Positive - ±1% -40 °C
RS Stock No. 163-0201
Mfr. Part No.NCV565D2T12R4G
kr 6,387
Each (On a Reel of 800)
Units
- 1.2 V Fixed D2PAK 1.5A Surface Mount 2.5 V 9 V 3 1 Positive - ±3% -40 °C
RS Stock No. 919-9216
Mfr. Part No.LT1963AEQPBF
kr 35,685
Each (In a Tube of 50)
Units
- 1.21 → 20 V Adjustable D2PAK 1.5A Surface Mount 1.9 V 20 V 5 1 Positive 1mA - -40 °C
RS Stock No. 889-5244
Mfr. Part No.MCP1702T-5002E/CB
BrandMicrochip
kr 3,227
Each (On a Reel of 3000)
Units
- 5 V Fixed SOT-23A 250mA Surface Mount 2.7 V 13.2 V 3 1 Positive 0.002mA ±0.4% -40 °C
RS Stock No. 802-3840
Mfr. Part No.ADP7105ARDZ-3.3
kr 48,355
Each (In a Pack of 2)
Units
- 3.3 V Fixed SOIC 500mA Surface Mount 3.3 V 20 V 8 1 Positive 900µA ±0.8% -40 °C
RS Stock No. 812-2385
Mfr. Part No.LP2960IM-5.0/NOPB
kr 24,73
Each
Units
- 1.23 → 29 V Fixed SOIC 500mA Surface Mount -20 V 30 V 16 1 Positive 450µA - -40 °C
RS Stock No. 159-7544
Mfr. Part No.MIC5158YM
BrandMicrochip
kr 31,226
Each (In a Tube of 54)
Units
- 1.3 → 36 V Adjustable, Fixed SOIC - Surface Mount 3 V 36 V 14 - Positive - - -40 °C
RS Stock No. 162-6014
Mfr. Part No.TPS79601DRBT
kr 20,313
Each (On a Reel of 250)
Units
- 1.2 → 5.5 V Adjustable SON 1A Surface Mount 2.7 V 5.5 V 8 1 Positive 0.265mA ±2% -40 °C
New
RS Stock No. 197-7198
Mfr. Part No.LM1117IMP-3.3/NOPB
kr 8,126
Each (In a Pack of 10)
Units
1.2V 3.3 V Fixed SOT-223 800mA Surface Mount - - 4 1 - - 3% -
RS Stock No. 686-9035
Mfr. Part No.LM2931D-R
kr 7,298
Each (In a Pack of 5)
Units
- 2.5 → 26 V Adjustable SOIC 100mA Surface Mount 26 V - 8 1 Positive 2.5mA ±4% -40 °C
RS Stock No. 188-9201
Mfr. Part No.LD39200PUR
kr 3,109
Each (On a Reel of 3000)
Units
250 mV @ 2 A -0.3 → 7 V Adjustable DFN 2A Surface Mount 2.5 V 6 V 6 1 - 3mA ±2% -40 °C
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