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 178-9233
製造零件編號LM2931AT-5.0/NOPB
HK$12.228
毎管:45 個
單位
- 5 V Fixed TO-220 100mA Through Hole - - 3 1 Positive - ±3.8% -40 °C
RS庫存編號 162-4782
製造零件編號LMS1587CS-3.3/NOPB
HK$16.75
毎管:45 個
單位
- - - - - - - - - - - - - -
RS庫存編號 145-6210
製造零件編號LT3080EDD#PBF
HK$24.592
毎管:121 個
單位
- 0 → 30 V Adjustable DFN 1.1A Surface Mount 1.2 V 36 V 8 1 Positive 1mA 1% -40 °C
RS庫存編號 714-0697
製造零件編號LD1117S33TR
HK$2.692
/個 (每包:10個)
單位
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% 0 °C
RS庫存編號 145-6362
製造零件編號TPS79933DDCT
HK$4.016
個 (在毎卷:250)
單位
- 3.3 V Fixed SOT-23 200mA Surface Mount 2.7 V 6.5 V 5 1 Positive 0.04mA ±1% -40 °C
RS庫存編號 102-5682
製造零件編號LM1117IMP-ADJ/NOPB
HK$4.259
個 (在毎卷:1000)
單位
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS庫存編號 535-8663
製造零件編號LM1117IMP-ADJ/NOPB
HK$7.792
/個 (每包:5個)
單位
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS庫存編號 173-2290
製造零件編號NJM2370U1-33
HK$3.404
個 (在毎卷:2000)
單位
- 3.3 V Fixed SOT-89 180mA Surface Mount - 20 V 6 1 Positive 0.18mA 3% -40 °C
RS庫存編號 145-5729
製造零件編號LT1764EQ#PBF
HK$45.319
毎管:50 個
單位
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 2.7 V 20 V 6 1 Positive 1mA - -40 °C
RS庫存編號 165-7739
製造零件編號LD1117AS12TR
HK$1.30
個 (在毎卷:2500)
單位
- 1.2 V Fixed SOT-223 1.2A Surface Mount - 10 V 3+Tab 1 Positive 5mA ±2% 0 °C
RS庫存編號 100-5939
製造零件編號LM3940IT-3.3/NOPB
HK$6.327
毎管:45 個
單位
- 3.3 V Fixed TO-220 1A Through Hole 4.5 V 7.5 V 3 1 Positive - - -40 °C
RS庫存編號 145-6357
製造零件編號LT1085CT-12#PBF
HK$46.687
毎管:50 個
單位
- 12 V Fixed TO-220 3A Through Hole 4.3 V 25 V 3 1 Positive 5mA ±1% 0 °C
RS庫存編號 534-3021
製造零件編號LM3940IT-3.3/NOPB
HK$6.33
單位
- 3.3 V Fixed TO-220 1A Through Hole 4.5 V 7.5 V 3 1 Positive - - -40 °C
RS庫存編號 121-7934
製造零件編號NCP692MN33T2G
HK$4.67
個 (在毎卷:3000)
單位
- 3.3 V Fixed DFN 1A Surface Mount 1.5 V 6 V 6 1 Positive - ±2% -40 °C
RS庫存編號 533-9331
製造零件編號LM1084IT-5.0/NOPB
HK$20.94
單位
- 5 V Fixed TO-220 5A Through Hole 2.6 V 25 V 3 1 Positive - - -40 °C
RS庫存編號 162-9096
製造零件編號NCV1117ST18T3G
HK$3.079
個 (在毎卷:4000)
單位
- 1.8 V Fixed SOT-223 2.2A Surface Mount - 20 V 3+Tab 1 Positive 10mA ±1% -40 °C
RS庫存編號 545-5736
製造零件編號LT1085CT-12#PBF
HK$64.64
單位
- 12 V Fixed TO-220 3A Through Hole 4.3 V 25 V 3 1 Positive 5mA ±1% 0 °C
RS庫存編號 100-5922
製造零件編號LM1086IS-3.3/NOPB
HK$12.327
毎管:45 個
單位
- 3.3 V Fixed D2PAK (TO-263) 1.5A Surface Mount 2.6 V 30 V 3 1 Positive - - -40 °C
RS庫存編號 165-4613
製造零件編號TC1014-2.5VCT713
BrandMicrochip
HK$2.16
個 (在毎卷:3000)
單位
- 2.5 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 506-3804
製造零件編號LT1764EQ#PBF
HK$64.32
單位
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 2.7 V 20 V 6 1 Positive 1mA - -40 °C