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. 686-9007
Mfr. Part No.LK112M80TR
HK$3.355
Each (In a Pack of 10)
units
- 8 V Fixed SOT-23 150mA Surface Mount 8.5 V 14 V 5 1 Positive 0.175mA - -40 °C
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
HK$36.32
Each
units
- 12 V Fixed TO-220 1.5A Through Hole - 25 V 3 1 Positive 5mA - 0 °C
RS Stock No. 145-9587
Mfr. Part No.LE33CZ-TR
HK$2.468
Each (On a Reel of 2000)
units
- 3.3 V Fixed TO-92 100mA Through Hole - 18 V 3 1 Positive 1.5mA ±2% -40 °C
RS Stock No. 817-5389
Mfr. Part No.TPS73501DRBT
HK$9.467
Each (On a Tape of 10)
units
- 1.25 → 6.2 V Adjustable SON 500mA Surface Mount 2.7 V 6.5 V 8 1 Positive 46µA ±3% -40 °C
RS Stock No. 647-2669
Mfr. Part No.LP3966ET-ADJ/NOPB
HK$31.59
Each
units
- 1.2 → 5 V Adjustable TO-220 3A Through Hole 2.5 V 7 V 5 1 Positive - ±1.5% -40 °C
RS Stock No. 145-3224
Mfr. Part No.MC33375D-3.3G
HK$4.486
Each (In a Tube of 98)
units
- 3.3 V Fixed SOIC 300mA Surface Mount - 13 V 8 1 Positive 200µA ±1% -40 °C
RS Stock No. 160-4563
Mfr. Part No.ADP121-ACBZ165R7
HK$4.525
Each (On a Reel of 3000)
units
- 1.65 V Fixed WLCSP 150mA Surface Mount 2.3 V 5.5 V 4 1 Positive 30µA ±3% -40 °C
RS Stock No. 829-6899
Mfr. Part No.LD39130SJ25R
HK$5.609
Each (In a Pack of 10)
units
- 2.5 V Fixed Flip-Chip - Surface Mount 1.4 V 5.5 V 4 1 Positive 55µA ±2 %, ±30 mV -40 °C
RS Stock No. 121-8862
Mfr. Part No.LP2980IM5-5.0/NOPB
HK$2.514
Each (On a Reel of 1000)
units
- 5 V Fixed SOT-23 50mA Surface Mount 2.1 V 16 V 5 1 Positive - ±1.5% -40 °C
RS Stock No. 155-6704
Mfr. Part No.LT1587CM-3.3#PBF
HK$44.051
Each (In a Tube of 50)
units
- 3.3 V Fixed D2PAK 3A Surface Mount 2.75 V 7 V 3 1 Positive 15mA - 0 °C
RS Stock No. 761-8406
Mfr. Part No.LT1763CS8-2.5#PBF
HK$40.23
Each
units
- 2.5 V Fixed SOIC 500mA Surface Mount 20 V 1.8 V 8 1 Positive 0.03mA - -40 °C
RS Stock No. 774-1357
Mfr. Part No.TPS7A7100RGWT
HK$19.29
Each
units
- 0.9 → 5 V Adjustable VQFN 1A Surface Mount 1.425 V 6.5 V 20 1 Positive 0.01mA ±2% -40 °C
RS Stock No. 126-3175
Mfr. Part No.NCP114ASN180T1G
HK$1.395
Each (In a Pack of 50)
units
- 1.8 V Fixed TSOP 600mA Surface Mount 1.7 V 5.5 V 5 1 Positive 95µA ±2% -
RS Stock No. 909-3455
Mfr. Part No.ADP7102ACPZ-R7
HK$26.30
Each (In a Pack of 2)
units
- 1.2 → 19 V Adjustable LFCSP WD 300mA Surface Mount 3.3 V 20 V 8 1 Positive 750µA 1.23% -40 °C
RS Stock No. 923-7403
Mfr. Part No.MAX603CSA+
BrandMaxim
HK$26.95
Each (In a Tube of 100)
units
- 1.25 → 11 V Adjustable, Fixed SOIC 500mA Surface Mount 2.7 V 11.5 V 8 1 Positive 0.035mA - 0 °C
RS Stock No. 170-3495
Mfr. Part No.LM2931CD2TG
HK$4.948
Each (In a Tube of 50)
units
- 2.7 → 29 V Adjustable D2PAK 100mA Surface Mount - 40 V 5 2 Positive 30mA ±5% -40 °C
RS Stock No. 688-9363
Mfr. Part No.LP2951ACDR2G
HK$4.36
Each (In a Pack of 2)
units
- 1.25 → 29 V Adjustable, Fixed SOIC 100mA Surface Mount - 30 V 8 1 Positive 0.075mA ±0.5% -40 °C
RS Stock No. 185-8605
Mfr. Part No.NCP110AFCT080T2G
HK$3.369
Each (In a Pack of 22)
units
190 mV @ 200 mA 0.8 V Fixed WLCSP 200mA Surface Mount 1.1 V 5.5 V 4 1 - 25µA ±2% -
RS Stock No. 160-9819
Mfr. Part No.ADP150ACBZ-1.8-R7
HK$4.525
Each (On a Reel of 3000)
units
- 1.8 V Fixed WLCSP 150mA Surface Mount 2.2 V 5.5 V 4 1 Positive 220µA ±1% -40 °C
RS Stock No. 184-8000
Mfr. Part No.BU28JA2VG-CGTR
BrandROHM
HK$2.16
Each (On a Reel of 3000)
units
315 mV @ 100 mA 2.8 V Fixed SSOP 200mA Surface Mount 1.7 V 6 V 5 1 - - ±2% -40 °C