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. 102-5696
Mfr. Part No.LM2937ET-12/NOPB
€1.185
Each (In a Tube of 45)
units
- 12 V Fixed TO-220 500mA Through Hole - 26 V 3 1 Positive - ±5% -40 °C
RS Stock No. 121-9652
Mfr. Part No.AP2204K-3.3TRG1
€0.10
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.3 V 24 V 5 1 Positive 50µA - -40 °C
RS Stock No. 545-5742
Mfr. Part No.LT1086CT-5#PBF
€4.37
Each
units
- 5 V Fixed TO-220 1.5A Through Hole - 20 V 3 1 Positive 5mA - 0 °C
RS Stock No. 165-4186
Mfr. Part No.MIC5504-3.3YM5-TR
BrandMicrochip
€0.068
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.5 V 5.5 V 5 1 Positive 38µA ±3% -40 °C
RS Stock No. 124-6445
Mfr. Part No.BA033CC0FP-E2
BrandROHM
€0.806
Each (In a Pack of 5)
units
- 3.3 V Fixed TO-252 1A Surface Mount 4 V 25 V 3 1 Positive - - -40 °C
RS Stock No. 660-6736
Mfr. Part No.LP2985A-33DBVT
€0.549
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.2 V 16 V 5 1 Positive 0.85mA ±1% -40 °C
RS Stock No. 170-9148
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
€0.364
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. 910-1449
Mfr. Part No.MIC5205YM5-TR
BrandMicrochip
€0.28
Each (In a Pack of 25)
units
- - Adjustable SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive 5µA 1% -40 °C
RS Stock No. 144-5898
Mfr. Part No.MIC5205-3.3YM5-TR
BrandMicrochip
€0.254
Each (On a Reel of 3000)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive 5µA 1% -40 °C
RS Stock No. 821-1113
Mfr. Part No.TC1262-3.3VAB
BrandMicrochip
€0.584
Each (In a Tube of 50)
units
- 3.3 V Fixed TO-220 500mA Through Hole 2.7 V 6 V 3 1 Positive - ±0.5% -40 °C
RS Stock No. 102-3505
Mfr. Part No.NCP1117DT50G
€0.268
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. 703-7905
Mfr. Part No.TC1262-3.3VDB
BrandMicrochip
€0.43
Each
units
- 3.3 V Fixed SOT-223 500mA Surface Mount 2.7 V 6 V 3+Tab 1 Positive - ±0.5% -40 °C
RS Stock No. 911-5697
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
€0.236
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. 809-9865
Mfr. Part No.ADP223ACPZ-R7
€1.326
Each (In a Pack of 5)
units
- 0.5 → 5 V Adjustable LFCSP 300mA Surface Mount 2.5 V 5.5 V 8 2 Positive 300µA 0.51V -40 °C
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
€0.117
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. 100-5931
Mfr. Part No.LM1117MP-5.0/NOPB
€0.441
Each (On a Reel of 1000)
units
- 5 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 110-7174
Mfr. Part No.IFX20002MBV33HTSA1
BrandInfineon
€0.331
Each (In a Pack of 50)
units
- 3.3 V Fixed SCT-595 30mA Surface Mount 4 V 45 V 4+Tab 1 Positive 5µA 4% -40 °C
RS Stock No. 535-8916
Mfr. Part No.LM2937ET-12/NOPB
€1.404
Each (In a Pack of 5)
units
- 12 V Fixed TO-220 500mA Through Hole - 26 V 3 1 Positive - ±5% -40 °C
RS Stock No. 165-8387
Mfr. Part No.AP7363-33D-13
€0.148
Each (On a Reel of 2500)
units
- 3.3 V Fixed TO-252 1.5A Surface Mount 2.2 V 5.5 V 3 1 Positive 25nA - -40 °C
RS Stock No. 160-4453
Mfr. Part No.ADP223ACPZ-R7
€0.64
Each (On a Reel of 3000)
units
- 0.5 → 5 V Adjustable LFCSP 300mA Surface Mount 2.5 V 5.5 V 8 2 Positive 300µA 0.51V -40 °C
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