LDO Voltage Regulators – Mouser Japan

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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 (JPY) 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: ¥159.5 5,407In 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	5,407In Stock	Cut Tape ¥159.5 ¥114.4 ¥103.1 ¥90.9 Reel ¥74.6 View ¥84.9 ¥81.4 ¥78.9 ¥72.9	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: ¥159.5 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 ¥159.5 ¥114.4 ¥103.1 ¥90.9 Reel ¥73.6 View ¥84.9 ¥81.4 ¥78.9 ¥72.4	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: ¥176.1 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 ¥176.1 ¥127.1 ¥114.8 ¥101.3 Reel ¥82.4 View ¥94.8 ¥90.9 ¥88.5 ¥80.7 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: ¥159.5 4,476In 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	4,476In Stock	Cut Tape ¥159.5 ¥114.6 ¥103.3 ¥90.9 Reel ¥76.2 View ¥85 ¥81.4 ¥78.9 ¥72.9 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: ¥169.4 2,278In Stock 3,000Expected 5/28/2027	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	2,278In Stock 3,000Expected 5/28/2027	Cut Tape ¥169.4 ¥122.9 ¥111.3 ¥101.3 Reel ¥81.7 View ¥94.8 ¥90.9 ¥88.5 ¥80.6 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: ¥176.1 1,754In 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	1,754In Stock 6,000On Order On Order Ship Dates Mfr. #: LDQ40PU33RY Stock: 1,754 Can Ship Immediately On Order: 3,000 Expected 11/13/2026 3,000 Expected 12/28/2026 Factory Lead-Time: 30 Weeks	Cut Tape ¥176.1 ¥127.1 ¥114.8 ¥101.3 Reel ¥82.4 View ¥94.8 ¥90.9 ¥88.5 ¥81.1	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: ¥164.4 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 ¥164.4 ¥120.4 ¥109.6 ¥97.8 Reel ¥85.4 View ¥94.8 ¥90.9 ¥90.2 ¥79.9 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: ¥176.1 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 ¥176.1 ¥127.1 ¥114.8 ¥101.3 Reel ¥82.4 View ¥94.8 ¥90.9 ¥87.7 ¥80.9 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: ¥75.2 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 ¥75.2 ¥73.3	Min.: 3,000 Mult.: 3,000 : 3,000														LDQ40	Reel