Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | Power Management (PMIC) | Electronic Components Distributor DigiKey

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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)	PSRR	Control Features	Protection Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
	LM317KCS IC REG LIN POS ADJ 1.5A TO220-3 Texas Instruments	3,803 In Stock	1 : £0.64000 Tube	-	Tube	Active	Positive	Adjustable	1	40V	1.25V	37V	-	1.5A	10 mA	80dB ~ 65dB (120Hz)	-	Over Current, Over Temperature, Short Circuit	0°C ~ 125°C	Through Hole	TO-220-3	TO-220-3
	LM317MABTG IC REG LIN POS ADJ 500MA TO220 onsemi	545 In Stock 3,450 Factory	Active	-	Tube	Active	Positive	Adjustable	1	40V	1.2V	37V	-	500mA	10 mA	80dB ~ 65dB (120Hz)	-	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C (TJ)	Through Hole	TO-220-3	TO-220

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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.