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 533-9319
製造零件編號LM1084IT-3.3/NOPB
HK$21.72
單位
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
RS庫存編號 121-8914
製造零件編號LM3940IMP-3.3/NOPB
HK$5.879
個 (在毎卷:1000)
單位
- 3.3 V Fixed SOT-223 1A Surface Mount 4.5 V 7.5 V 3+Tab 1 Positive - - -40 °C
RS庫存編號 146-0950
製造零件編號AZ1117H-3.3TRE1
HK$0.863
個 (在毎卷:4000)
單位
- 3.3 V Fixed SOT-223 1A Surface Mount - 15 V 3+Tab 1 Positive 10mA 1% -40 °C
RS庫存編號 805-1740
製造零件編號NCV1117ST18T3G
HK$4.83
/個 (每包:20個)
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 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 651-9960
製造零件編號LP2985IM5-3.3/NOPB
HK$6.67
單位
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive - ±3% -40 °C
RS庫存編號 157-8361
製造零件編號LT1963AET#PBF
HK$34.351
毎管:50 個
單位
- 1.21 20 V Adjustable TO-220 1.5A Through Hole 2.5 V 20 V 5 1 Positive 1µA - -40 °C
RS庫存編號 122-0130
製造零件編號NCP4632DDT08T5G
HK$7.595
個 (在毎卷:3000)
單位
- 0.8 V Fixed DPAK 3A Surface Mount 1.6 V 5.25 V 5 1 Positive 450µA ±1% -40 °C
RS庫存編號 535-8635
製造零件編號LM1117IMP-3.3/NOPB
HK$9.222
/個 (每包:5個)
單位
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS庫存編號 709-9155
製造零件編號TPS7A4501KTTR
HK$28.34
單位
- 1.21 → 20 V Adjustable D2PAK (TO-263) 1.5A Surface Mount 1.9 V 20 V 5 1 Positive 1mA ±1% -40 °C
RS庫存編號 640-4981
製造零件編號LT1764AEQ#PBF
HK$62.81
單位
- 1.21 → 20 V Adjustable D2PAK 3A Surface Mount 1.7 V 20 V 6 1 - 1mA - -40 °C
RS庫存編號 535-8679
製造零件編號LM1117MP-1.8/NOPB
HK$9.41
/個 (每包:5個)
單位
- 1.8 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS庫存編號 153-3492
製造零件編號LT1587CT-3.3#PBF
HK$43.491
毎管:50 個
單位
- 3.3 V Fixed TO-220 3A Through Hole 2.7 V 7 V 3 1 Positive 8mA - 0 °C
RS庫存編號 162-5332
製造零件編號TPS75801KC
HK$46.769
毎管:50 個
單位
- 1.225 → 5 V Adjustable TO-220 3A Through Hole 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
RS庫存編號 170-9148
製造零件編號HT7533-1-SOT89
BrandHoltek
HK$3.649
個 (在毎卷:1000)
單位
- 3.3 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS庫存編號 822-8874
製造零件編號AP7331-33WG-7
HK$2.979
/個 (每包:50個)
單位
- 3.3 V Fixed SOT-25 300mA Surface Mount 2 V 6 V 5 1 Positive 85µA ±2% -40 °C
RS庫存編號 802-2137
製造零件編號NCP1117LPST33T3G
HK$2.872
/個 (每包:25個)
單位
- 3.3 V Fixed SOT-223 1.1A Surface Mount -0.3 V 18 V 3+Tab 1 Positive 700µA - 0 °C
RS庫存編號 851-4601
製造零件編號LT3015IQ#PBF
HK$70.635
/個 (每包:2個)
單位
- -29.3 -1.2 V Adjustable D2PAK 1.5A Surface Mount -1.8 V 30 V 5 1 Negative 1.1mA - -40 °C
RS庫存編號 168-6051
製造零件編號L4941BV
HK$7.585
毎管:50 個
單位
- 5 V Fixed TO-220 1A Through Hole - 16 V 3 1 Positive 4mA ±4% -40 °C
RS庫存編號 165-7750
製造零件編號LD1117S33CTR
HK$1.137
個 (在毎卷:2500)
單位
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C