Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Output Configuration	Output Type	Number of Regulators	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Voltage Dropout (Max)	Current - Output	Current - Quiescent (Iq)	Current - Supply (Max)	PSRR	Control Features	Protection Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package

L78L33CD-TR IC REG LINEAR 3.3V 100MA 8SO STMicroelectronics	18,501 In Stock	1 : $0.32000 Cut Tape (CT) 2,500 : $0.09594 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	30V	3.3V	-	-	100mA	5.5 mA	6 mA	49dB (120Hz)	-	Over Current, Over Temperature, Short Circuit	0°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
AP2213M-3.3TRG1 IC REG LINEAR 3.3V 500MA 8SOIC Diodes Incorporated	25,965 In Stock	1 : $0.51000 Cut Tape (CT) 4,000 : $0.14615 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	18V	3.3V	-	0.7V @ 500mA	500mA	180 µA	28 mA	75dB (100Hz)	Enable	Over Current, Over Temperature, Reverse Polarity	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
L4931ABD33-TR IC REG LINEAR 3.3V 250MA 8SO STMicroelectronics	12,892 In Stock	1 : $1.53000 Cut Tape (CT) 2,500 : $0.64733 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	20V	3.3V	-	0.8V @ 250mA	250mA	1 mA	6 mA	73dB ~ 55dB (120Hz ~ 10kHz)	-	Over Current, Over Temperature	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MIC5239-3.3YMM-TR IC REG LINEAR 3.3V 500MA 8MSOP Microchip Technology	1,930 In Stock	1 : $3.58000 Cut Tape (CT) 2,500 : $2.71000 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	30V	3.3V	-	0.35V @ 500mA (Typ)	500mA	45 µA	15 mA	-	Enable	Over Current, Over Temperature, Over Voltage, Reverse Polarity	-40°C ~ 125°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
LT1129CS8-3.3#TRPBF IC REG LINEAR 3.3V 700MA 8SOIC Analog Devices Inc.	5,185 In Stock	1 : $10.75000 Cut Tape (CT) 2,500 : $4.72500 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	30V	3.3V	-	0.7V @ 700mA	700mA	70 µA	90 mA	64dB (120Hz)	Enable	Over Temperature, Reverse Polarity	0°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO

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Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Linear voltage regulators, including LDO (Low Drop Out) types, are used to provide a stable output voltage that is nominally invariant with respect to changes in load current, input voltage, or environmental factors. Their operating principle requires that the input voltage be maintained above the desired output voltage by some minimum amount, and function on the basis of converting whatever excess voltage is present at the input to heat. While this renders them less efficient than switch-mode voltage regulators for most applications, they are often better suited for applications with high sensitivity to noise.