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. 177-0354
Mfr. Part No.MIC29302AWD
BrandMicrochip
kr 13,878
Each (In a Tube of 80)
Units
800 mV @ 3 A 1.24 → 15 V Adjustable TO-252 3A Surface Mount 3 V 16 V 5 1 - - ±2% -40 °C
RS Stock No. 162-9535
Mfr. Part No.NCP551SN28T1G
kr 1,888
Each (On a Reel of 3000)
Units
- 2.8 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 648-1231
Mfr. Part No.LP3964ES-ADJ/NOPB
kr 32,80
Each
Units
- 1.2 → 5 V Adjustable D2PAK (TO-263) 800mA Surface Mount 2.5 V 7 V 5 1 Positive - ±1.5% -40 °C
RS Stock No. 785-6904
Mfr. Part No.MC33275DT-5.0G
kr 7,976
Each (In a Pack of 5)
Units
- 5 V Fixed DPAK 300mA Surface Mount - 13 V 3 1 Positive 200µA - -40 °C
RS Stock No. 163-0210
Mfr. Part No.NCV59301DS33R4G
kr 11,122
Each (On a Reel of 800)
Units
- 3.3 V Fixed D2PAK 3A Surface Mount 2.24 V 13.5 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 177-0434
Mfr. Part No.MIC47100YMME
BrandMicrochip
kr 13,30
Each (In a Tube of 100)
Units
80 mV @ 1 A 0.8 → 2 V Adjustable MSOP 1A Surface Mount 1 V 3.6 V 8 1 - - ±2% -40 °C
RS Stock No. 144-5855
Mfr. Part No.MCP1804T-3302I/DB
BrandMicrochip
kr 4,742
Each (On a Reel of 1000)
Units
- 3.3 V Fixed SOT-223 150mA Surface Mount 2 V 28 V 3+Tab 1 Positive 125µA ±2% -40 °C
RS Stock No. 145-7044
Mfr. Part No.TPS78342DDCT
kr 5,374
Each (On a Reel of 250)
Units
- 4.2 V Fixed SOT-23 150mA Surface Mount 2.2 V 5.5 V 5 1 Positive 500nA 3% -40 °C
RS Stock No. 669-5011
Mfr. Part No.MCP1824T-3302E/OT
BrandMicrochip
kr 3,768
Each (In a Pack of 5)
Units
- 3.3 V Fixed SOT-23 300mA Surface Mount 2.1 V 6 V 5 1 Positive 0.12mA ±2.5% -40 °C
RS Stock No. 171-7718
Mfr. Part No.BD18IA5MEFJ-ME2
BrandROHM
kr 6,38
Each (In a Pack of 25)
Units
900mV 1.8 V Fixed HTSOP 500mA Surface Mount 2.5 V 5.5 V 8 1 Positive - ±1% -40 °C
RS Stock No. 131-2766
Mfr. Part No.BU28TD3WG-TR
BrandROHM
kr 2,891
Each (In a Pack of 50)
Units
- 2.8 V Fixed SSOP 200mA Surface Mount 1.7 V 6 V 5 1 Positive - ±1% -40 °C
RS Stock No. 177-0391
Mfr. Part No.MIC39101-3.3YM
BrandMicrochip
kr 11,681
Each (In a Tube of 95)
Units
630 mV @ 1 A 3.3 V Fixed SOIC 1A Surface Mount 2.25 V 16 V 8 1 - - ±2% -40 °C
RS Stock No. 686-8764
Mfr. Part No.LD29080DT18R
kr 4,104
Each (In a Pack of 5)
Units
- 1.8 V Fixed DPAK 800mA Surface Mount 2.5 V 13 V 3 1 Positive 2mA ±1% -40 °C
New
RS Stock No. 190-8267
Mfr. Part No.MAX8510EXK45+T
kr 14,023
Each (In a Pack of 10)
Units
120 mV @ 120 mA 4.5 V Fixed SO70 120mA Surface Mount 2 V 6 V 5 1 Positive - ±3% -40 °C
RS Stock No. 168-5853
Mfr. Part No.STLQ015M21R
kr 2,171
Each (On a Reel of 3000)
Units
- 2.1 V Fixed SOT-23 150mA Surface Mount 1.5 V 5.5 V 5 1 Positive 2.4µA ±3% -40 °C
RS Stock No. 802-4060
Mfr. Part No.NCP603SN180T1G
kr 2,931
Each (On a Tape of 25)
Units
- 1.8 V Fixed TSOP 300mA Surface Mount 1.75 V 6 V 5 1 Positive - ±3% -40 °C
RS Stock No. 145-5966
Mfr. Part No.LT1085CT#PBF
kr 52,841
Each (In a Tube of 50)
Units
- 1.25 28.5 V Adjustable TO-220 3A Through Hole 2.55 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 145-9022
Mfr. Part No.MCP1755S-3302E/DB
BrandMicrochip
kr 5,123
Each (In a Tube of 78)
Units
- 3.3 V Fixed SOT-223 300mA Surface Mount 3.6 V 16 V 3+Tab 1 Positive 100µA - -40 °C
RS Stock No. 171-7716
Mfr. Part No.BD33GA3MEFJ-ME2
BrandROHM
kr 7,676
Each (In a Pack of 25)
Units
1.2V 3.3 V Fixed HTSOP 300mA Surface Mount 4.5 V 14 V 8 1 Positive - ±1% -40 °C
RS Stock No. 169-8132
Mfr. Part No.NJM2370U1-10
kr 4,305
Each (On a Reel of 2000)
Units
- 10 V Fixed SOT-89 180mA Surface Mount - 20 V 6 1 Positive 0.18mA 3% -40 °C
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