LDO Voltage Regulators – Mouser Singapore

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Ultralow Dropout LDOs

STMicroelectronics Ultra Low Dropout LDOs are a wide range of low and medium-power LDO regulators with ultralow dropout and fast transient response. These ultralow LDOs simplify the design of high-efficiency, cost-effective linear power management (from 50mA to 3A of continuous load current). This makes them ideal for DSPs, MCUs, and FPGAs.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) 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 3.3V 0.25A Positive L4931CD33-TR STMicroelectronics 1: $1.88 4,337In Stock	Mfr. Part No. L4931CD33-TR Mouser Part No 511-L4931CD33-TR	STMicroelectronics	LDO Voltage Regulators 3.3V 0.25A Positive Learn More about STMicroelectronics stm standard products	Datasheet	4,337In Stock	Cut Tape $1.88 $1.37 $1.23 $1.09 Reel $0.917 View $1.03 $0.985 $0.97 $0.876 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-8	3.3 V	250 mA	1 Output	Positive	600 uA		Fixed	- 40 C	+ 125 C	400 mV		L4931	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 0.25A Positive L4931CD50-TR STMicroelectronics 1: $1.84 7,114In Stock	Mfr. Part No. L4931CD50-TR Mouser Part No 511-L4931CD50-TR	STMicroelectronics	LDO Voltage Regulators 5.0V 0.25A Positive Learn More about STMicroelectronics stm standard products	Datasheet	7,114In Stock	Cut Tape $1.84 $1.34 $1.21 $1.07 Reel $0.917 View $1.01 $0.967 $0.938 $0.895 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-8	5 V	250 mA	1 Output	Positive	600 uA		Fixed	- 40 C	+ 125 C	400 mV		L4931	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1.5A Regulator Lo Drop L4940D2T12-TR STMicroelectronics 1: $3.05 2,785In Stock	Mfr. Part No. L4940D2T12-TR Mouser Part No 511-L4940D2T12-TR	STMicroelectronics	LDO Voltage Regulators 1.5A Regulator Lo Drop Learn More about STMicroelectronics stm standard products	Datasheet	2,785In Stock	Cut Tape $3.05 $2.26 $2.05 $1.84 Reel $1.50 View $1.74 $1.69 $1.46 $1.41 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	D2PAK-3 (TO-263-3)	12 V	1.5 A	1 Output	Positive	30 mA		Fixed	- 40 C	+ 150 C	200 mV		L4940	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 1.5A Positive L4940D2T5-TR STMicroelectronics 1: $3.05 2,613In Stock 2,000Expected 17/6/2027	Mfr. Part No. L4940D2T5-TR Mouser Part No 511-L4940D2T5-TR	STMicroelectronics	LDO Voltage Regulators 5.0V 1.5A Positive Learn More about STMicroelectronics stm standard products	Datasheet	2,613In Stock 2,000Expected 17/6/2027	Cut Tape $3.05 $2.26 $2.05 $1.84 Reel $1.59 View $1.74 $1.69 $1.55 $1.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	D2PAK-3 (TO-263-3)	5 V	1.5 A	1 Output	Positive	30 mA		Fixed	- 40 C	+ 150 C	200 mV		L4940	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 1.5A Positive L4940V5 STMicroelectronics 1: $3.01 2,362In Stock	Mfr. Part No. L4940V5 Mouser Part No 511-L4940V5	STMicroelectronics	LDO Voltage Regulators 5.0V 1.5A Positive Learn More about STMicroelectronics stm standard products	Datasheet	2,362In Stock	$3.01 $2.27 $1.84 $1.73 View $1.67 $1.60 $1.58	Min.: 1 Mult.: 1	Through Hole	TO-220-3	5 V	1.5 A	1 Output	Positive	30 mA		Fixed	- 40 C	+ 150 C	200 mV		L4940	Tube
LDO Voltage Regulators 5.0V 1.0A Positive L4941BDT-TR STMicroelectronics 1: $2.23 3,898In Stock	Mfr. Part No. L4941BDT-TR Mouser Part No 511-L4941BDT-TR	STMicroelectronics	LDO Voltage Regulators 5.0V 1.0A Positive Learn More about STMicroelectronics stm standard products	Datasheet	3,898In Stock	Cut Tape $2.23 $1.70 $1.51 $1.34 View Reel $1.02 $1.26 $1.21 $1.02 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TO-252-3	5 V	1 A	1 Output	Positive	20 mA		Fixed	- 40 C	+ 150 C	250 mV		L4941	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 50mA Positive LD2980ABM50TR STMicroelectronics 1: $0.966 13,345In Stock	Mfr. Part No. LD2980ABM50TR Mouser Part No 511-LD2980ABM50	STMicroelectronics	LDO Voltage Regulators 5.0V 50mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	13,345In Stock	Cut Tape $0.966 $0.672 $0.602 $0.526 Reel $0.415 View $0.491 $0.468 $0.45 $0.408 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	5 V	50 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	7 mV		LD2980	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 50mA Positive LD2980CM33TR STMicroelectronics 1: $0.802 18,630In Stock	Mfr. Part No. LD2980CM33TR Mouser Part No 511-LD2980CM33	STMicroelectronics	LDO Voltage Regulators 3.3V 50mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	18,630In Stock	Cut Tape $0.802 $0.582 $0.526 $0.468 View Reel $0.377 $0.435 $0.416 $0.40 $0.377 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3.3 V	50 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	7 mV		LD2980	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 100mA Positive LD2981ABM33TR STMicroelectronics 1: $1.13 5,094In Stock	Mfr. Part No. LD2981ABM33TR Mouser Part No 511-LD2981ABM33	STMicroelectronics	LDO Voltage Regulators 3.3V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	5,094In Stock	Cut Tape $1.13 $0.80 $0.718 $0.628 Reel $0.476 View $0.585 $0.559 $0.539 $0.465 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3.3 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 100mA Positive LD2981ABU33TR STMicroelectronics 1: $0.87 6,922In Stock	Mfr. Part No. LD2981ABU33TR Mouser Part No 511-LD2981ABU33	STMicroelectronics	LDO Voltage Regulators 3.3V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	6,922In Stock	Cut Tape $0.87 $0.627 $0.566 $0.486 Reel $0.42 View $0.479 $0.458 $0.441 $0.409 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOT-89-3	3.3 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 100mA Positive LD2981ABU50TR STMicroelectronics 1: $1.16 4,783In Stock 7,500Expected 19/5/2027	Mfr. Part No. LD2981ABU50TR Mouser Part No 511-LD2981ABU50	STMicroelectronics	LDO Voltage Regulators 5.0V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	4,783In Stock 7,500Expected 19/5/2027	Cut Tape $1.16 $0.809 $0.726 $0.634 Reel $0.517 View $0.59 $0.563 $0.541 $0.503 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOT-89-3	5 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 100mA Positive LD2981CM33TR STMicroelectronics 1: $0.938 7,859In Stock 24,000On Order	Mfr. Part No. LD2981CM33TR Mouser Part No 511-LD2981CM33	STMicroelectronics	LDO Voltage Regulators 3.3V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	7,859In Stock 24,000On Order On Order Ship Dates Mfr. No: LD2981CM33TR Stock: 7,859 Can Dispatch Immediately On Order: 12,000 Expected 7/12/2026 12,000 Expected 28/12/2026 Factory Lead Time: 30 Weeks	Cut Tape $0.938 $0.69 $0.589 $0.515 View Reel $0.415 $0.479 $0.453 $0.437 $0.415 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3.3 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 100mA Positive LD2981CU33TR STMicroelectronics 1: $1.02 4,642In Stock	Mfr. Part No. LD2981CU33TR Mouser Part No 511-LD2981CU33	STMicroelectronics	LDO Voltage Regulators 3.3V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	4,642In Stock	Cut Tape $1.02 $0.721 $0.641 $0.559 Reel $0.457 View $0.521 $0.498 $0.479 $0.445 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOT-89-3	3.3 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 5.0V 100mA Positive LD2981CU50TR STMicroelectronics 1: $0.952 4,483In Stock	Mfr. Part No. LD2981CU50TR Mouser Part No 511-LD2981CU50	STMicroelectronics	LDO Voltage Regulators 5.0V 100mA Positive Learn More about STMicroelectronics stm standard products	Datasheet	4,483In Stock	Cut Tape $0.952 $0.714 $0.612 $0.54 Reel $0.439 View $0.506 $0.486 $0.469 $0.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOT-89-3	5 V	100 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	1 mV		LD2981	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 150mA Lo Quiescent Lo Noise Vltg Reg LD39015M10R STMicroelectronics 1: $1.09 17,889In Stock	Mfr. Part No. LD39015M10R Mouser Part No 511-LD39015M10R	STMicroelectronics	LDO Voltage Regulators 150mA Lo Quiescent Lo Noise Vltg Reg Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	17,889In Stock	Cut Tape $1.09 $0.785 $0.704 $0.615 $0.575 Reel $0.574 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1 V	150 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	80 mV		LD39015	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 150mA Lo Quiescent Lo Noise Vltg Reg LD39015M12R STMicroelectronics 1: $1.06 10,672In Stock	Mfr. Part No. LD39015M12R Mouser Part No 511-LD39015M12R	STMicroelectronics	LDO Voltage Regulators 150mA Lo Quiescent Lo Noise Vltg Reg Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	10,672In Stock	Cut Tape $1.06 $0.763 $0.695 $0.617 Reel $0.506 View $0.581 $0.558 $0.543 $0.496 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1.2 V	150 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	80 mV		LD39015	Reel, Cut Tape, MouseReel
LDO Voltage Regulators IC Regulator LN 150MA, 1.8V LD39015M18R STMicroelectronics 1: $1.05 12,766In Stock	Mfr. Part No. LD39015M18R Mouser Part No 511-LD39015M18R	STMicroelectronics	LDO Voltage Regulators IC Regulator LN 150MA, 1.8V Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	12,766In Stock	Cut Tape $1.05 $0.749 $0.675 $0.59 Reel $0.477 View $0.551 $0.526 $0.507 $0.466 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1.8 V	150 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	80 mV		LD39015	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator LD39100PU12RY STMicroelectronics 1: $1.77 19,992In Stock	Mfr. Part No. LD39100PU12RY Mouser Part No 511-LD39100PU12RY	STMicroelectronics	LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator Learn More about STMicroelectronics stm ld39100 regulators	Datasheet	19,992In Stock	Cut Tape $1.77 $1.28 $1.16 $1.02 Reel $0.869 View $0.962 $0.922 $0.895 $0.85 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	1.2 V	1 A	1 Output	Positive	200 uA		Fixed	- 40 C	+ 125 C	200 mV	AEC-Q100	LD39100	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator LD39100PU25RY STMicroelectronics 1: $1.74 3,157In Stock	Mfr. Part No. LD39100PU25RY Mouser Part No 511-LD39100PU25RY	STMicroelectronics	LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator Learn More about STMicroelectronics stm ld39100 regulators	Datasheet	3,157In Stock	Cut Tape $1.74 $1.28 $1.13 $1.00 View Reel $0.805 $0.94 $0.902 $0.87 $0.805 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	2.5 V	1 A	1 Output	Positive	200 uA	65 dB	Fixed	- 40 C	+ 125 C	200 mV	AEC-Q100	LD39100	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator LD39100PU33RY STMicroelectronics 1: $1.69 2,421In Stock 9,000On Order	Mfr. Part No. LD39100PU33RY Mouser Part No 511-LD39100PU33RY	STMicroelectronics	LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator Learn More about STMicroelectronics stm ld39100 regulators	Datasheet	2,421In Stock 9,000On Order On Order Ship Dates Mfr. No: LD39100PU33RY Stock: 2,421 Can Dispatch Immediately On Order: 3,000 Expected 15/1/2027 6,000 Expected 30/4/2027 Factory Lead Time: 30 Weeks	Cut Tape $1.69 $1.26 $1.15 $1.03 Reel $0.887 View $0.964 $0.926 $0.904 $0.868 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	3.3 V	1 A	1 Output	Positive	200 uA		Fixed	- 40 C	+ 125 C	200 mV	AEC-Q100	LD39100	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 300mA current Linear Reg IC LD39130SJ33R STMicroelectronics 1: $1.17 5,368In Stock	Mfr. Part No. LD39130SJ33R Mouser Part No 511-LD39130SJ33R	STMicroelectronics	LDO Voltage Regulators 300mA current Linear Reg IC Learn More about STMicroelectronics stm ld39130s voltage regulator	Datasheet	5,368In Stock	Cut Tape $1.17 $0.828 $0.745 $0.653 View Reel $0.466 $0.609 $0.582 $0.562 $0.551 $0.466 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SMD/SMT	FlipChip-4	3.3 V	300 mA	1 Output	Positive	45 uA	70 dB	Fixed	- 40 C	+ 125 C	300 mV		LD39130S	Reel, Cut Tape, MouseReel
LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop LD39150PT-R STMicroelectronics 1: $1.96 5,153In Stock	Mfr. Part No. LD39150PT-R Mouser Part No 511-LD39150PT-R	STMicroelectronics	LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	5,153In Stock	Cut Tape $1.96 $1.44 $1.28 $1.13 View Reel $0.913 $1.07 $1.03 $0.997 $0.913 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	TO-252-5	1.22 V to 5 V	1.5 A	1 Output	Positive	2.5 mA		Adjustable	- 40 C	+ 125 C	40 mV		LD39150	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1.8V 0.15A Ultra Low LD3985M18R STMicroelectronics 1: $1.09 4,466In Stock	Mfr. Part No. LD3985M18R Mouser Part No 511-LD3985M18R	STMicroelectronics	LDO Voltage Regulators 1.8V 0.15A Ultra Low Learn More about STMicroelectronics stm standard products	Datasheet	4,466In Stock	Cut Tape $1.09 $0.764 $0.685 $0.598 Reel $0.488 View $0.558 $0.532 $0.511 $0.476 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1.8 V	150 mA	1 Output	Positive	150 uA		Fixed	- 40 C	+ 125 C	400 uV		LD3985	Reel, Cut Tape, MouseReel
LDO Voltage Regulators BICMOS VOLT REG LD3985M33R STMicroelectronics 1: $1.01 30,683In Stock	Mfr. Part No. LD3985M33R Mouser Part No 511-LD3985M33R	STMicroelectronics	LDO Voltage Regulators BICMOS VOLT REG Learn More about STMicroelectronics stm standard products	Datasheet	30,683In Stock	Cut Tape $1.01 $0.709 $0.636 $0.556 Reel $0.447 View $0.518 $0.496 $0.477 $0.437 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3.3 V	150 mA	1 Output	Positive	150 uA		Fixed	- 40 C	+ 125 C	400 uV		LD3985	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1A Ultra Low-Dropout regulator with Reverse Current Protection LD59100PUR STMicroelectronics 1: $1.21 5,156In Stock 6,000On Order	Mfr. Part No. LD59100PUR Mouser Part No 511-LD59100PUR	STMicroelectronics	LDO Voltage Regulators 1A Ultra Low-Dropout regulator with Reverse Current Protection Learn More about STMicroelectronics stm ld59100 regulator	Datasheet	5,156In Stock 6,000On Order	Cut Tape $1.21 $0.866 $0.781 $0.70 Reel $0.571 View $0.651 $0.623 $0.598 $0.541 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-8	Adjustable	1 A	1 Output	Positive	280 uA	70 dB	Adjustable	- 40 C	+ 125 C	200 mV		LD59100	Reel, Cut Tape, MouseReel