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

LT1121IST-5#PBF IC REG LINEAR 5V 150MA SOT223-3 Analog Devices Inc.	654 In Stock	1 : ¥63.76000 Tube	-	Tube	Active	Positive	Fixed	1	30V	5V	-	0.7V @ 150mA	150mA	50 µA	14 mA	58dB (120Hz)	Enable	Over Temperature, Reverse Polarity	-40°C ~ 125°C	Surface Mount	TO-261-4, TO-261AA	SOT-223-3
LDFM33PVR IC REG LINEAR 3.3V 500MA 6DFN STMicroelectronics	5,761 In Stock	1 : ¥7.91000 Cut Tape (CT) 3,000 : ¥3.05276 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	16V	3.3V	-	0.3V @ 500mA	500mA	800 µA	-	60dB ~ 52dB (120Hz ~ 100kHz)	Enable, Power Good	Over Current, Over Temperature, Under Voltage Lockout (UVLO)	-40°C ~ 125°C (TJ)	Surface Mount	6-VDFN Exposed Pad	6-DFN (2x2)

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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.