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. 165-7750
Mfr. Part No.LD1117S33CTR
kr 1,172
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% -40 °C
RS Stock No. 761-8169
Mfr. Part No.LT1175IST-5#PBF
kr 60,42
Each
Units
- -5 V Fixed SOT-223 500mA Surface Mount - 25 V 3+Tab 1 Negative 0.045mA 2.5% -40 °C
RS Stock No. 785-7272
Mfr. Part No.NCP551SN33T1G
kr 3,669
Each (In a Pack of 10)
Units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
kr 42,37
Each
Units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 661-6333
Mfr. Part No.TPS7350QD
kr 32,50
Each
Units
- 5 V Fixed SOIC 500mA Surface Mount 5.33 V 10 V 8 1 Positive 0.34mA ±2% -40 °C
RS Stock No. 162-9537
Mfr. Part No.NCP551SN33T1G
kr 1,397
Each (On a Reel of 3000)
Units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 110-7765
Mfr. Part No.TLE4275GV33ATMA1
BrandInfineon
kr 22,452
Each (In a Pack of 5)
Units
- 3.3 V Fixed D2PAK (TO-263) 1A Surface Mount 4.4 V 42 V 5 1 Positive 30mA ±2% -40 °C
RS Stock No. 165-7741
Mfr. Part No.LD1117AS33TR
kr 2,364
Each (On a Reel of 2500)
Units
- 3.3 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 686-9344
Mfr. Part No.LD1117AS33TR
kr 5,376
Each (In a Pack of 25)
Units
- 3.3 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS Stock No. 533-5626
Mfr. Part No.LM2940CT-12/NOPB
kr 13,26
Each
Units
- 12 V Fixed TO-220 1A Through Hole 13.6 V 26 V 3 1 Positive - - 0 °C
RS Stock No. 669-4890
Mfr. Part No.MCP1703-5002E/DB
BrandMicrochip
kr 5,544
Each (In a Pack of 5)
Units
- 5 V Fixed SOT-223 250mA Surface Mount 2.7 V 16 V 3+Tab 1 Positive 0.002mA ±2% -40 °C
RS Stock No. 536-1546
Mfr. Part No.LM3940IMP-3.3/NOPB
kr 13,76
Each
Units
- 3.3 V Fixed SOT-223 1A Surface Mount 4.5 V 7.5 V 3+Tab 1 Positive - - -40 °C
RS Stock No. 244-1964
Mfr. Part No.UCC383T-5
kr 40,46
Each
Units
- 5 V Fixed TO-220 3A Through Hole 5.45 V 9 V 3 1 Positive <0.65mA ±2.5% 0 °C
RS Stock No. 920-3416
Mfr. Part No.TPS71533DCKR
kr 3,483
Each (On a Reel of 3000)
Units
- 3.3 V Fixed SC-70 50mA Surface Mount 2.5 V 24 V 5 1 Positive 0.0032mA ±4% -40 °C
RS Stock No. 884-2556
Mfr. Part No.LT1963AET#PBF
kr 55,435
Each (In a Pack of 2)
Units
- 1.21 20 V Adjustable TO-220 1.5A Through Hole 2.5 V 20 V 5 1 Positive 1µA - -40 °C
RS Stock No. 823-5566
Mfr. Part No.TLE4275GATMA1
BrandInfineon
kr 21,176
Each (In a Pack of 5)
Units
- 4.9 → 5.1 V Fixed D2PAK (TO-263) - Surface Mount 5.5 V 42 V 5 1 Positive 180µA 2% -40 °C
RS Stock No. 545-4890
Mfr. Part No.LT1086CT#PBF
kr 42,37
Each
Units
- - Adjustable TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 460-538
Mfr. Part No.LP2951CM-3.3/NOPB
kr 6,679
Each (In a Pack of 10)
Units
- 3.3 V Fixed SOIC 100mA Surface Mount - 30 V 8 1 Positive - ±0.5% -40 °C
RS Stock No. 165-3577
Mfr. Part No.MCP1754ST-3302E/MB
BrandMicrochip
kr 4,187
Each (On a Reel of 1000)
Units
- 3.3 V Fixed SOT-89 150mA Surface Mount 3.6 V 16 V 3 1 Positive 0.056mA ±0.4% -40 °C
RS Stock No. 162-6221
Mfr. Part No.LM2937IMP-8.0/NOPB
kr 9,314
Each (On a Reel of 1000)
Units
- 8 V Fixed SOT-223 400mA Surface Mount 0 V 26 V 3+Tab 1 Positive 20mA 5% -40 °C
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