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庫存編號 165-5624
製造零件編號IFX21401MBHTSA1
BrandInfineon
HK$1.17
個 (在毎卷:3000)
單位
- - Tracking SCT595 50mA Surface Mount 4 V 45 V 5 - Positive 140µA 0.5% -40 °C
RS庫存編號 761-8548
製造零件編號LT1963AEQ#PBF
HK$51.74
單位
- 1.21 20 V Adjustable D2PAK 1.5A Surface Mount 1.9 V 20 V 5 1 Positive 1mA - -40 °C
RS庫存編號 822-9990
製造零件編號LT3083EDF#PBF
HK$77.91
單位
- 2.5 5 V Adjustable DFN 3A Surface Mount 1.2 V 23 V 12 1 Positive - ±1% -40 °C
RS庫存編號 761-8419
製造零件編號LT1764AET#PBF
HK$67.68
單位
- 1.21 20 V Adjustable TO-220 3A Through Hole 2.7 V 20 V 5 1 Positive 1mA - -40 °C
RS庫存編號 698-9063
製造零件編號MCP1700T-3002E/TT
BrandMicrochip
HK$3.22
單位
- 3 V Fixed SOT-23 250mA Surface Mount 2.3 V 6 V 3 1 Positive 0.0016mA ±2% -40 °C
RS庫存編號 703-7905
製造零件編號TC1262-3.3VDB
BrandMicrochip
HK$4.45
單位
- 3.3 V Fixed SOT-223 500mA Surface Mount 2.7 V 6 V 3+Tab 1 Positive - ±0.5% -40 °C
RS庫存編號 919-9051
製造零件編號LT1129IQPBF
HK$40.41
毎管:50 個
單位
- 3.8 → 30 V Adjustable D2PAK 700mA Surface Mount 4.3 V 20 V 5 1 Positive 0.025mA - -40 °C
RS庫存編號 121-9654
製造零件編號AZ1117CR-3.3TRG1
HK$0.822
個 (在毎卷:1000)
單位
- 3.3 V Fixed SOT-89 800mA Surface Mount - 15 V 3 1 Positive 6mA ±1% -20 °C
RS庫存編號 785-7181
製造零件編號NCP1117LPSTADT3G
HK$3.117
/個 (每包:20個)
單位
- 1.25 → 10.6 V Adjustable SOT-223 1.1A Surface Mount -0.3 V 18 V 3+Tab 1 Positive 50µA - 0 °C
RS庫存編號 825-1177
製造零件編號TC1014-2.7VCT713
BrandMicrochip
HK$2.764
/個 (每包:20個)
單位
- 2.7 V Fixed SOT-23 50mA Surface Mount 2.7 V 6 V 5 1 Positive - - -40 °C
RS庫存編號 669-5219
製造零件編號TC1014-5.0VCT713
BrandMicrochip
HK$2.616
/個 (每包:10個)
單位
- 5 V Fixed SOT-23 50mA Surface Mount 2.7 V 6 V 5 1 Positive <0.0005mA ±2.5% -40 °C
RS庫存編號 533-9599
製造零件編號LM1117MP-ADJ/NOPB
HK$9.22
單位
- 1.25 → 13.8 V Adjustable SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS庫存編號 516-5887
製造零件編號NCP1117DTAG
HK$3.694
/個 (每包:5個)
單位
- 1.25 → 18.8 V Adjustable DPAK 1A Surface Mount - 20 V 3 1 Positive 3.6mA ±1% 0 °C
RS庫存編號 178-9246
製造零件編號LM1086CS-2.5/NOPB
HK$20.667
毎管:45 個
單位
- 2.5 V Fixed D2PAK (TO-263) 1.5A Surface Mount 2.6 V 30 V 3 1 Positive - - 0 °C
RS庫存編號 102-5596
製造零件編號TPS767D301PWP
HK$41.758
毎管:50 個
單位
- 1.5 → 5.5 V Adjustable, Fixed HTSSOP 1A Surface Mount 2.7 V 10 V 28 2 Positive 0.085mA ±2% -40 °C
RS庫存編號 628-3661
製造零件編號TC1185-3.3VCT713
BrandMicrochip
HK$3.058
/個 (每包:10個)
單位
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.7 V 6 V 5 1 Positive <0.0005mA ±2.5% -40 °C
RS庫存編號 661-4141
製造零件編號TPS75833KTTT
HK$57.53
單位
- 3.3 V Fixed D2PAK (TO-263) 3A Surface Mount 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
RS庫存編號 460-455
製造零件編號LM2990S-12/NOPB
HK$30.67
/個 (每包:5個)
單位
- -12 V Fixed D2PAK (TO-263) 1A Surface Mount -26 V 0.3 V 3 1 Negative - ±5% -40 °C
RS庫存編號 620-1603
製造零件編號TPS75225QPWP
HK$47.97
單位
- 2.5 V Fixed HTSSOP 2A Surface Mount 2.7 V 5.5 V 20 1 Positive 0.075mA ±2% -40 °C
RS庫存編號 100-3956
製造零件編號LM2931Z-5.0/NOPB
HK$3.077
個 (在毎卷:1800)
單位
- 5 V Fixed TO-92 100mA Through Hole - - 3 1 Positive - - -40 °C