LDO Voltage Regulators – Mouser Canada

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LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator is a high-accuracy voltage regulator that provides 250mA of current. It is available in a SOT23 5L, DFN 2x2 6L package to maximize space saving. The device is stabilized with a small ceramic capacitor on the output. The low drop, low quiescent current, and short-circuit protection make the LDQ40 suitable for low-power battery-operated applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Output Voltage	Output Current	Number of Outputs	Polarity	Quiescent Current	PSRR / Ripple Rejection - Typ	Output Type	Minimum Operating Temperature	Maximum Operating Temperature	Dropout Voltage	Qualification	Series	Packaging
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU33R STMicroelectronics 1: $1.38 5,357In Stock New Product	Mfr. Part # LDQ40PU33R Mouser Part # 511-LDQ40PU33R New Product	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	5,357In Stock	Cut Tape $1.38 $0.992 $0.894 $0.788 Reel $0.647 View $0.736 $0.706 $0.684 $0.632	Min.: 1 Mult.: 1 : 3,000		DFN-6	3.3 V	250 mA	1 Output	Positive	200 uA	60 dB	Fixed	- 40 C	+ 150 C	500 mV		LDQ40	Reel, Cut Tape
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU50R STMicroelectronics 1: $1.38 908In Stock New Product	Mfr. Part # LDQ40PU50R Mouser Part # 511-LDQ40PU50R New Product	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	908In Stock	Cut Tape $1.38 $0.992 $0.894 $0.788 Reel $0.638 View $0.736 $0.706 $0.684 $0.628	Min.: 1 Mult.: 1 : 3,000		DFN-6	5 V	250 mA	1 Output	Positive	200 uA	60 dB	Fixed	- 40 C	+ 150 C	500 mV		LDQ40	Reel, Cut Tape
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU25RY STMicroelectronics 1: $1.53 2,989In Stock	Mfr. Part # LDQ40PU25RY Mouser Part # 511-LDQ40PU25RY	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	2,989In Stock	Cut Tape $1.53 $1.10 $0.995 $0.878 Reel $0.714 View $0.822 $0.788 $0.768 $0.70 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	5 V	250 mA	1 Output	Positive	90 uA	55 dB	Fixed	- 40 C	+ 150 C	500 mV	AEC-Q100	LDQ40	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 250 mA Low dropout LDO LDQ40PUR STMicroelectronics 1: $1.38 4,376In Stock	Mfr. Part # LDQ40PUR Mouser Part # 511-LDQ40PUR	STMicroelectronics	LDO Voltage Regulators 250 mA Low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	4,376In Stock	Cut Tape $1.38 $0.994 $0.896 $0.788 Reel $0.661 View $0.737 $0.706 $0.684 $0.632 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6		200 mA	1 Output	Positive	2 uA	65 dB	Adjustable	- 40 C	+ 150 C	700 mV	AEC-Q100	LDQ40	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU18RY STMicroelectronics 1: $1.47 2,232In Stock 3,000Expected 2027-05-28	Mfr. Part # LDQ40PU18RY Mouser Part # 511-LDQ40PU18RY	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	2,232In Stock 3,000Expected 2027-05-28	Cut Tape $1.47 $1.07 $0.965 $0.878 Reel $0.708 View $0.822 $0.788 $0.768 $0.698 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	5 V	250 mA	1 Output	Positive	90 uA	55 dB	Fixed	- 40 C	+ 150 C	500 mV	AEC-Q100	LDQ40	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU33RY STMicroelectronics 1: $1.53 1,708In Stock 6,000On Order	Mfr. Part # LDQ40PU33RY Mouser Part # 511-LDQ40PU33RY	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	1,708In Stock 6,000On Order On Order Ship Dates Mfr. #: LDQ40PU33RY Stock: 1,708 Can Ship Immediately On Order: 3,000 Expected 2026-11-13 3,000 Expected 2026-12-28 Factory Lead-Time: 30 Weeks	Cut Tape $1.53 $1.10 $0.995 $0.878 Reel $0.714 View $0.822 $0.788 $0.768 $0.703	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	3.3 V	250 mA	1 Output	Positive	500 uA	55 dB	Fixed	- 40 C	+ 150 C	500 mV	AEC-Q100	LDQ40	Reel, Cut Tape
LDO Voltage Regulators 250 mA low dropout LDO LDQ40PU50RY STMicroelectronics 1: $1.43 2,855In Stock	Mfr. Part # LDQ40PU50RY Mouser Part # 511-LDQ40PU50RY	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	2,855In Stock	Cut Tape $1.43 $1.04 $0.95 $0.848 Reel $0.74 View $0.822 $0.788 $0.782 $0.693 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	5 V	250 mA	1 Output	Positive	90 uA	55 dB	Fixed	- 40 C	+ 150 C	500 mV	AEC-Q100	LDQ40	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 250 mA Low dropout LDO LDQ40PURY STMicroelectronics 1: $1.53 2,230In Stock	Mfr. Part # LDQ40PURY Mouser Part # 511-LDQ40PURY	STMicroelectronics	LDO Voltage Regulators 250 mA Low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	2,230In Stock	Cut Tape $1.53 $1.10 $0.995 $0.878 Reel $0.714 View $0.822 $0.788 $0.76 $0.701 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6		200 mA	1 Output	Positive	2 uA	65 dB	Adjustable	- 40 C	+ 150 C	700 mV	AEC-Q100	LDQ40	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 250 mA low dropout LDO LDQ40MRY STMicroelectronics 3,000: $0.652 Non-Stocked New Product	Mfr. Part # LDQ40MRY Mouser Part # 511-LDQ40MRY New Product	STMicroelectronics	LDO Voltage Regulators 250 mA low dropout LDO Learn More about STMicroelectronics st ldq40 ldo voltage regulator	Datasheet	Non-Stocked	Reel $0.652 $0.635	Min.: 3,000 Mult.: 3,000 : 3,000														LDQ40	Reel

LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

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LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

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