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. 165-8693
Mfr. Part No.AP2204K-5.0TRG1
$0.18
Each (On a Reel of 3000)
units
- 5 V Fixed SOT-23 200mA Surface Mount 2.3 V 24 V 5 1 Positive - - -40 °C
RS Stock No. 170-9148
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
$0.751
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. 885-0721
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
$0.839
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
RS Stock No. 885-5404
Mfr. Part No.AP2204K-5.0TRG1
$0.477
Each (In a Pack of 40)
units
- 5 V Fixed SOT-23 200mA Surface Mount 2.3 V 24 V 5 1 Positive - - -40 °C
RS Stock No. 545-5584
Mfr. Part No.LT1129CT#PBF
$9.76
Each
units
- 3.8 → 30 V Adjustable TO-220 700mA Through Hole -30 V 30 V 5 1 Positive 0.05mA - 0 °C
RS Stock No. 145-0801
Mfr. Part No.LT1129CT#PBF
$5.848
Each (In a Tube of 50)
units
- 3.8 → 30 V Adjustable TO-220 700mA Through Hole -30 V 30 V 5 1 Positive 0.05mA - 0 °C
RS Stock No. 516-5865
Mfr. Part No.NCP1117DT33G
$0.776
Each (In a Pack of 5)
units
- 3.3 V Fixed DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
RS Stock No. 102-3504
Mfr. Part No.NCP1117DT33G
$0.579
Each (In a Tube of 75)
units
- 3.3 V Fixed DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
RS Stock No. 102-3505
Mfr. Part No.NCP1117DT50G
$0.536
Each (In a Tube of 75)
units
- 5 V Fixed DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
RS Stock No. 516-5871
Mfr. Part No.NCP1117DT50G
$0.722
Each (In a Pack of 5)
units
- 5 V Fixed DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
RS Stock No. 170-3504
Mfr. Part No.NCP1117DT12G
$0.537
Each (In a Tube of 75)
units
- 12 V Fixed DPAK 2.2A Surface Mount - 20 V 3 1 Positive 10mA ±1% 0 °C
RS Stock No. 165-7744
Mfr. Part No.LD1117S12CTR
$0.293
Each (On a Reel of 2500)
units
- 1.2 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 403-888
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
$0.654
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-92 250mA Through Hole 2.3 V 6 V 3 1 Positive 0.0016mA ±2% -40 °C
RS Stock No. 911-5697
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
$0.463
Each (In a Bag of 1000)
units
- 3.3 V Fixed TO-92 250mA Through Hole 2.3 V 6 V 3 1 Positive 0.0016mA ±2% -40 °C
RS Stock No. 686-9366
Mfr. Part No.LD1117S12CTR
$0.636
Each (In a Pack of 25)
units
- 1.2 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 533-8164
Mfr. Part No.LM2940CT-5.0/NOPB
$3.78
Each
units
- 5 V Fixed TO-220 1A Through Hole 6.25 V 26 V 3 1 Positive - - 0 °C
RS Stock No. 168-6597
Mfr. Part No.LD1117V33C
$0.722
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 686-9767
Mfr. Part No.LD1117V33C
$0.797
Each (In a Pack of 10)
units
- 3.3 V Fixed TO-220 1.3A Through Hole - 15 V 3 1 Positive 5mA ±1% -40 °C
RS Stock No. 533-9331
Mfr. Part No.LM1084IT-5.0/NOPB
$4.57
Each
units
- 5 V Fixed TO-220 5A Through Hole 2.6 V 25 V 3 1 Positive - - -40 °C
RS Stock No. 102-5616
Mfr. Part No.LM1084IS-5.0/NOPB
$4.00
Each (In a Tube of 45)
units
- 5 V Fixed D2PAK (TO-263) 5A Surface Mount 2.6 V 25 V 3 1 Positive - - -40 °C
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