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 545-5742
製造零件編號LT1086CT-5#PBF
HK$41.34
單位
- 5 V Fixed TO-220 1.5A Through Hole - 20 V 3 1 Positive 5mA - 0 °C
RS庫存編號 769-5504
製造零件編號SPX29302T5-L
BrandEXAR
HK$12.868
/個 (每包:5個)
單位
- 1.25 → 16 V Adjustable D2PAK (TO-263) 3A Surface Mount 2.8 V 16 V 5 1 Positive 60mA 1% -40 °C
RS庫存編號 661-4141
製造零件編號TPS75833KTTT
HK$45.75
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 761-8147
製造零件編號LT1175CS8-5#PBF
HK$53.88
單位
- -5 V Fixed SOIC 500mA Surface Mount - 25 V 8 1 Negative 0.045mA 2.5% 0 °C
RS庫存編號 155-9377
製造零件編號LT1084CT-5#PBF
HK$55.435
毎管:50 個
單位
- 4.9 → 5.1 V Fixed TO-220 5A Through Hole - 20 V 3 1 Positive 10mA - 0 °C
RS庫存編號 168-6500
製造零件編號LD3985M33R
HK$1.886
個 (在毎卷:3000)
單位
- 3.3 V Fixed SOT-23 550mA Surface Mount 2.5 V 6 V 5 1 Positive 0.17mA ±2% -40 °C
RS庫存編號 809-9900
製造零件編號ADP1755ACPZ-R7
HK$21.30
/個 (每包:5個)
單位
- 0.75 → 3.3 V Adjustable LFCSP 1.2A Surface Mount 1.6 V 3.6 V 16 5 Positive - 0.51V -40 °C
RS庫存編號 821-1104
製造零件編號TC1055-3.3VCT713
BrandMicrochip
HK$2.016
個 (在毎卷:3000)
單位
- 3.3 V Fixed SOT-23 - Surface Mount 2.7 V 6.5 V 5 1 Positive - ±0.5% -40 °C
RS庫存編號 100-3956
製造零件編號LM2931Z-5.0/NOPB
HK$2.967
個 (在毎卷:1800)
單位
- 5 V Fixed TO-92 100mA Through Hole - - 3 1 Positive - - -40 °C
RS庫存編號 785-2574
製造零件編號NCP663SQ27T1G
HK$1.935
/個 (每包:10個)
單位
- 2.7 V Fixed SC-82AB 280mA Surface Mount - 6 V 4 1 Positive 6µA 2% -40 °C
RS庫存編號 812-2408
製造零件編號LP2985AIM5-2.7/NOPB
HK$6.99
單位
- 2.7 V Fixed SOT-23 350mA Surface Mount 2.5 V 16 V 5 1 Positive 1µA 1% -40 °C
RS庫存編號 913-4219
製造零件編號SPX29302T5-L/TR
BrandEXAR
HK$9.241
個 (在毎卷:500)
單位
- 1.25 → 16 V Adjustable D2PAK (TO-263) 3A Surface Mount - 16 V 5 1 Positive 40mA ±1% -40 °C
RS庫存編號 536-1259
製造零件編號LM2931CM/NOPB
HK$6.91
單位
- 3 → 24 V Adjustable SOIC 100mA Surface Mount - - 8 1 Positive - - -40 °C
RS庫存編號 162-7768
製造零件編號LP2985AIM5-2.7/NOPB
HK$2.967
個 (在毎卷:1000)
單位
- 2.7 V Fixed SOT-23 350mA Surface Mount 2.5 V 16 V 5 1 Positive 1µA 1% -40 °C
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 165-8446
製造零件編號AP7175SP-13
HK$4.743
個 (在毎卷:2500)
單位
- 0.8 → 3.1 V Adjustable SO-8EP 4A Surface Mount 1.2 V 3.65 V 8 2 Positive - ±1.5% -40 °C
RS庫存編號 438-3955
製造零件編號TPS767D301PWP
HK$39.103
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 162-9471
製造零件編號NCP1117LPSTADT3G
HK$1.077
個 (在毎卷:4000)
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 919-9216
製造零件編號LT1963AEQPBF
HK$34.351
毎管:50 個
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 516-5089
製造零件編號MC33269D-3.3G
HK$6.73
單位
- 3.3 V Fixed SOIC 800mA Surface Mount - 20 V 8 1 Positive 5.5mA ±1% -40 °C