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. 686-9388
Mfr. Part No.LD1117S33CTR
SGD0.407
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 100-5911
Mfr. Part No.LM1084IT-3.3/NOPB
SGD3.532
Each (In a Tube of 45)
units
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 170-8927
Mfr. Part No.AZ1084CD-3.3TRG1
SGD0.342
Each (On a Reel of 2500)
units
- 3.3 V Fixed TO-252 5A Surface Mount - 12 V 3 1 Positive 10mA - 0 °C
RS Stock No. 661-3807
Mfr. Part No.TPS71550DCKR
SGD1.022
Each (In a Pack of 5)
units
- 5 V Fixed SC-70 50mA Surface Mount 2.5 V 24 V 5 1 Positive 0.0032mA ±4% -40 °C
RS Stock No. 178-7476
Mfr. Part No.TLE4266GHTMA1
BrandInfineon
SGD1.751
Each (On a Reel of 4000)
units
- 4.9 → 5.1 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 150mA - -40 °C
RS Stock No. 170-9148
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
SGD0.555
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. 462-8084
Mfr. Part No.TLE4264GHTSA1
BrandInfineon
SGD1.878
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 9mA ±2% -40 °C
RS Stock No. 880-5320
Mfr. Part No.LD39300PT-R
SGD1.98
Each (In a Pack of 5)
units
- 1.22 → 5 V Adjustable PPAK 3A Surface Mount 2.5 V 6 V 5 1 Positive 2.5 (ON Mode) mA, 5 (OFF Mode) μA - -40 °C
RS Stock No. 884-2556
Mfr. Part No.LT1963AET#PBF
SGD8.075
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. 919-8759
Mfr. Part No.TLE4264GHTSA1
BrandInfineon
SGD1.366
Each (On a Reel of 1000)
units
- 5 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 9mA ±2% -40 °C
RS Stock No. 731-3785
Mfr. Part No.BAJ0BC0WFP-E2
BrandROHM
SGD0.972
Each (In a Pack of 5)
units
- 10 V Fixed TO-252 1A Surface Mount 11 V 16 V 5 1 - 0.01mA ±2% -40 °C
RS Stock No. 885-0721
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
SGD0.519
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. 178-9248
Mfr. Part No.LM2937ES-15/NOPB
SGD4.60
Each (In a Tube of 45)
units
- 15 V Fixed D2PAK (TO-263) 500mA Surface Mount - 26 V 3 1 Positive - ±5% -40 °C
RS Stock No. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
SGD3.14
Each
units
- 3.3 V Fixed TO-220 1.5A Through Hole 2.6 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 652-0033
Mfr. Part No.LP2985AIM5-3.3/NOPB
SGD1.08
Each
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 170-9151
Mfr. Part No.HT7536-1-SOT89
BrandHoltek
SGD0.555
Each (On a Reel of 1000)
units
- 3.6 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 661-4456
Mfr. Part No.TPS79133DBVT
SGD1.812
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 100mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 825-3637
Mfr. Part No.TLV1117LV25DCYR
SGD0.567
Each (In a Pack of 20)
units
- 2.5 V Fixed SOT-223 1A Surface Mount 2 V 5.5 V 3+Tab 1 Positive 100µA 1.5% -40 °C
RS Stock No. 533-5604
Mfr. Part No.LM2936Z-5.0/NOPB
SGD2.69
Each
units
- 5 V Fixed TO-92 50mA Through Hole 4 V 40 V 3 1 Positive - ±2% -40 °C
RS Stock No. 661-4141
Mfr. Part No.TPS75833KTTT
SGD6.56
Each
units
- 3.3 V Fixed D2PAK (TO-263) 3A Surface Mount 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
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