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	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package

LM2940S-5.0/NOPB IC REG LIN 5V 1A DDPAK/TO263-3 Texas Instruments	752 In Stock	1 : ¥23.46000 Tube	-	Tube	Active	Positive	Fixed	1	26V	5V	-	1V @ 1A	1A	10 mA	15 mA	64dB (120Hz)	-	Over Current, Over Temperature, Reverse Polarity, Short Circuit	-40°C ~ 125°C	-	-	Surface Mount	TO-263-4, D2PAK (3 Leads + Tab), TO-263AA	TO-263 (DDPAK-3)
LM2991SX/NOPB IC REG LIN NEG ADJ 1A DDPAK Texas Instruments	1,811 In Stock	1 : ¥28.22000 Cut Tape (CT) 500 : ¥17.65878 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Negative	Adjustable	1	-26V	-3V	-24V	1V @ 1A	1A	0.7 mA	5 mA	60dB (1kHz)	Enable	Over Temperature, Short Circuit	-40°C ~ 125°C	-	-	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)
NCP164ASN330T1G LDO 300 MA AD 3.3V ULTRA-LOW NOI onsemi	7,348 In Stock 9,000 Factory	1 : ¥8.16000 Cut Tape (CT) 3,000 : ¥1.98596 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Positive	Fixed	1	5.5V	3.3V	-	0.17V @ 300mA	300mA	40 µA	-	83dB ~ 61dB (100Hz ~ 100kHz)	Enable, Power Good	Over Current, Over Temperature	150°C (TJ)	Automotive	AEC-Q100	Surface Mount	SOT-23-5 Thin, TSOT-23-5	5-TSOP
LM2940S-5.0 IC REG LIN 5V 1A DDPAK/TO263-3 Texas Instruments	2,766 In Stock	1 : ¥37.15000 Tube	-	Tube	Obsolete	Positive	Fixed	1	26V	5V	-	1V @ 1A	1A	10 mA	15 mA	64dB (120Hz)	-	Over Current, Over Temperature, Reverse Polarity, Short Circuit	-40°C ~ 125°C	-	-	Surface Mount	TO-263-4, D2PAK (3 Leads + Tab), TO-263AA	TO-263 (DDPAK-3)

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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.