LDO Voltage Regulators – Mouser Ireland

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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 (EUR) 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 100mA Positive LD2981CM33TR STMicroelectronics 1: €0.628 494In Stock 33,000On 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	494In Stock 33,000On Order On Order Ship Dates Mfr. No: LD2981CM33TR Stock: 494 Can Dispatch Immediately On Order: 21,000 Expected 12/10/2026 12,000 Expected 14/12/2026 Factory Lead Time: 30 Weeks	Cut Tape €0.628 €0.447 €0.402 €0.352 View Reel €0.267 €0.328 €0.313 €0.301 €0.267 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 15mA LO QUIESCENT LO NOISE VLTG REG LD39015M125R STMicroelectronics 1: €0.662 537In Stock	Mfr. Part No. LD39015M125R Mouser Part No 511-LD39015M125R	STMicroelectronics	LDO Voltage Regulators 15mA LO QUIESCENT LO NOISE VLTG REG Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	537In Stock	Cut Tape €0.662 €0.474 €0.427 €0.373 Reel €0.294 View €0.348 €0.333 €0.321 €0.288 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1.25 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, 1.5V LD39015M15R STMicroelectronics 1: €0.662 1,033In Stock	Mfr. Part No. LD39015M15R Mouser Part No 511-LD39015M15R	STMicroelectronics	LDO Voltage Regulators IC Regulator LN 150MA, 1.5V Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	1,033In Stock	Cut Tape €0.662 €0.474 €0.427 €0.373 Reel €0.304 View €0.348 €0.333 €0.321 €0.297 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	1.5 V	150 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	80 mV		LD39015	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 3.3V 500mA ULTRA LDO LD39050PU33R STMicroelectronics 1: €0.903 294In Stock 66,000On Order	Mfr. Part No. LD39050PU33R Mouser Part No 511-LD39050PU33R	STMicroelectronics	LDO Voltage Regulators 3.3V 500mA ULTRA LDO Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	294In Stock 66,000On Order On Order Ship Dates Mfr. No: LD39050PU33R Stock: 294 Can Dispatch Immediately On Order: 36,000 Expected 12/10/2026 30,000 Expected 05/05/2027 Factory Lead Time: 30 Weeks	Cut Tape €0.903 €0.654 €0.589 €0.519 View Reel €0.418 €0.485 €0.464 €0.45 €0.418 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	3.3 V	500 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	200 mV		LD39050	Reel, Cut Tape, MouseReel
LDO Voltage Regulators ADJ FRM 0.8V LDO 500mA LD39050PUR STMicroelectronics 1: €0.963 440In Stock 24,000On Order	Mfr. Part No. LD39050PUR Mouser Part No 511-LD39050PUR	STMicroelectronics	LDO Voltage Regulators ADJ FRM 0.8V LDO 500mA Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	440In Stock 24,000On Order On Order Ship Dates Mfr. No: LD39050PUR Stock: 440 Can Dispatch Immediately On Order: 15,000 Expected 16/10/2026 9,000 Expected 02/11/2026 Factory Lead Time: 30 Weeks	Cut Tape €0.963 €0.697 €0.63 €0.556 View Reel €0.459 €0.52 €0.499 €0.487 €0.459 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	800 mV	500 mA	1 Output	Positive	50 uA		Adjustable	- 40 C	+ 125 C	200 mV		LD39050	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator LD39100PU18RY STMicroelectronics 1: €1.13 260In Stock	Mfr. Part No. LD39100PU18RY Mouser Part No 511-LD39100PU18RY	STMicroelectronics	LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator Learn More about STMicroelectronics stm ld39100 regulators	Datasheet	260In Stock	Cut Tape €1.13 €0.814 €0.736 €0.651 View Reel €0.543 €0.61 €0.586 €0.574 €0.543 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	1.8 V	1 A	1 Output	Positive	200 uA	62 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 LD39100PU33R STMicroelectronics 1: €0.98 661In Stock 9,000Expected 10/03/2027	Mfr. Part No. LD39100PU33R Mouser Part No 511-LD39100PU33R	STMicroelectronics	LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator Learn More about STMicroelectronics stm ld39100 regulators	Datasheet	661In Stock 9,000Expected 10/03/2027	Cut Tape €0.98 €0.701 €0.632 €0.557 Reel €0.439 View €0.521 €0.50 €0.485 €0.409 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	3.3 V	1 A	1 Output	Positive	200 uA	62 dB	Fixed	- 40 C	+ 125 C	200 mV		LD39100	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 300 mA very low quiescent current Linear regulator IC with automatic Green mode LD39130SPUR STMicroelectronics 1: €0.679 421In Stock 25,000Expected 20/09/2027	Mfr. Part No. LD39130SPUR Mouser Part No 511-LD39130SPUR	STMicroelectronics	LDO Voltage Regulators 300 mA very low quiescent current Linear regulator IC with automatic Green mode Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	421In Stock 25,000Expected 20/09/2027	Cut Tape €0.679 €0.472 €0.424 €0.37 View Reel €0.294 €0.345 €0.329 €0.316 €0.303 €0.294 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SMD/SMT	DFN-6	Adjustable	300 mA	1 Output	Positive	45 uA	65 dB	Adjustable	- 40 C	+ 125 C	300 mV		LD39130S	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 1.8V 0.15A Ultra Low LD3985M18R STMicroelectronics 1: €0.688 1,468In Stock 3,000Expected 20/10/2026	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	1,468In Stock 3,000Expected 20/10/2026	Cut Tape €0.688 €0.483 €0.433 €0.378 Reel €0.309 View €0.353 €0.336 €0.323 €0.301 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 2.5V 0.15A Ultra Low LD3985M25R STMicroelectronics 1: €0.593 2,534In Stock	Mfr. Part No. LD3985M25R Mouser Part No 511-LD3985M25R	STMicroelectronics	LDO Voltage Regulators 2.5V 0.15A Ultra Low Learn More about STMicroelectronics stm standard products	Datasheet	2,534In Stock	Cut Tape €0.593 €0.424 €0.381 €0.333 Reel €0.27 View €0.31 €0.297 €0.285 €0.263 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	2.5 V	150 mA	1 Output	Positive	150 uA		Fixed	- 40 C	+ 125 C	400 uV		LD3985	Reel, Cut Tape, MouseReel
LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop Lo LD3985M30R STMicroelectronics 1: €0.525 3,107In Stock	Mfr. Part No. LD3985M30R Mouser Part No 511-LD3985M30R	STMicroelectronics	LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop Lo Learn More about STMicroelectronics stm standard products	Datasheet	3,107In Stock	Cut Tape €0.525 €0.396 €0.364 €0.329 Reel €0.291 View €0.312 €0.303 €0.294 €0.29 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3 V	150 mA	1 Output	Positive	150 uA		Fixed	- 40 C	+ 125 C	400 uV		LD3985	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 500 mA ultra-low dropout linear regulator with bias supply LD56050DPU120R STMicroelectronics 1: €0.31 2,641In Stock	Mfr. Part No. LD56050DPU120R Mouser Part No 511-LD56050DPU120R	STMicroelectronics	LDO Voltage Regulators 500 mA ultra-low dropout linear regulator with bias supply Learn More about STMicroelectronics stm ld56050 regulators	Datasheet	2,641In Stock	Cut Tape €0.31 €0.217 €0.194 €0.182 Reel €0.128 View €0.174 €0.167 €0.125	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-4	1.2 V	500 mA	1 Output	Positive	27 uA		Fixed	- 40 C	+ 85 C	80 mV		LD56050	Reel, Cut Tape
LDO Voltage Regulators 300 mA very low dropout linear regulator IC LD59030DTPU33R STMicroelectronics 1: €0.292 2,364In Stock	Mfr. Part No. LD59030DTPU33R Mouser Part No 511-LD59030DTPU33R	STMicroelectronics	LDO Voltage Regulators 300 mA very low dropout linear regulator IC Learn More about STMicroelectronics stm ld59030 regulators	Datasheet	2,364In Stock	Cut Tape €0.292 €0.198 €0.176 €0.152 View Reel €0.12 €0.142 €0.136 €0.131 €0.126 €0.12 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SMD/SMT	DFN-4	3.3 V	300 mA	1 Output	Positive	28 uA	75 dB	Fixed	- 40 C	+ 125 C	135 mV		LD59030	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 500 mA very low drop voltage regulator LDFM33PUR STMicroelectronics 1: €0.765 38In Stock 9,000On Order	Mfr. Part No. LDFM33PUR Mouser Part No 511-LDFM33PUR	STMicroelectronics	LDO Voltage Regulators 500 mA very low drop voltage regulator Learn More about STMicroelectronics stm ultra low dropout ldos	Datasheet	38In Stock 9,000On Order On Order Ship Dates Mfr. No: LDFM33PUR Stock: 38 Can Dispatch Immediately On Order: 3,000 Expected 09/10/2026 6,000 TBD Factory Lead Time: 30 Weeks	Cut Tape €0.765 €0.55 €0.495 €0.436 View Reel €0.358 €0.407 €0.39 €0.377 €0.358 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	3.3 V	500 mA	1 Output	Positive	200 uA		Fixed	- 40 C	+ 125 C	125 mV		LDFM	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120C30R STMicroelectronics 1: €0.275 4,287In Stock	Mfr. Part No. LDK120C30R Mouser Part No 511-LDK120C30R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120c regulator	Datasheet	4,287In Stock	Cut Tape €0.275 €0.198 €0.179 €0.157 View Reel €0.123 €0.147 €0.146 €0.123 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-323-5	3 V	200 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120C33R STMicroelectronics 1: €0.327 3,588In Stock	Mfr. Part No. LDK120C33R Mouser Part No 511-LDK120C33R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120c regulator	Datasheet	3,588In Stock	Cut Tape €0.327 €0.226 €0.201 €0.174 Reel €0.138 View €0.161 €0.153 €0.146 €0.134 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-323-5	3.3 V	200 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200mA Low Quiescent Crnt low noise LDO LDK120C35R STMicroelectronics 1: €0.31 776In Stock	Mfr. Part No. LDK120C35R Mouser Part No 511-LDK120C35R	STMicroelectronics	LDO Voltage Regulators 200mA Low Quiescent Crnt low noise LDO Learn More about STMicroelectronics stm ldk120c regulator	Datasheet	776In Stock	Cut Tape €0.31 €0.216 €0.194 €0.169 Reel €0.132 View €0.167 €0.159 €0.152 €0.127 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-323-5	3.5 V	200 mA	1 Output	Positive	50 uA		Fixed	- 40 C	+ 125 C	150 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120M-R STMicroelectronics 1: €0.31 7,433In Stock	Mfr. Part No. LDK120M-R Mouser Part No 511-LDK120M-R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120m regulator	Datasheet	7,433In Stock	Cut Tape €0.31 €0.217 €0.195 €0.171 View Reel €0.138 €0.159 €0.153 €0.147 €0.138 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	Adjustable	200 mA	1 Output	Positive	100 uA		Adjustable	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120M25R STMicroelectronics 1: €0.335 2,475In Stock	Mfr. Part No. LDK120M25R Mouser Part No 511-LDK120M25R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120m regulator	Datasheet	2,475In Stock	Cut Tape €0.335 €0.231 €0.206 €0.178 Reel €0.14 View €0.164 €0.157 €0.15 €0.131 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	2.5 V	200 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120M28R STMicroelectronics 1: €0.327 1,720In Stock	Mfr. Part No. LDK120M28R Mouser Part No 511-LDK120M28R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120m regulator	Datasheet	1,720In Stock	Cut Tape €0.327 €0.227 €0.202 €0.175 Reel €0.138 View €0.162 €0.153 €0.147 €0.134 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	2.8 V	200 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent Very low noise LDO LDK120M30R STMicroelectronics 1: €0.327 3,461In Stock	Mfr. Part No. LDK120M30R Mouser Part No 511-LDK120M30R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent Very low noise LDO Learn More about STMicroelectronics stm ldk120m regulator	Datasheet	3,461In Stock	Cut Tape €0.327 €0.227 €0.202 €0.175 Reel €0.138 View €0.162 €0.153 €0.147 €0.134 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3 V	200 mA	1 Output	Positive	100 uA		Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent current very low noise LDO LDK120M32R STMicroelectronics 1: €0.318 2,936In Stock	Mfr. Part No. LDK120M32R Mouser Part No 511-LDK120M32R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent current very low noise LDO Learn More about STMicroelectronics stm ldk120m regulator	Datasheet	2,936In Stock	Cut Tape €0.318 €0.224 €0.201 €0.174 Reel €0.138 View €0.161 €0.153 €0.146 €0.133 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-23-5	3.2 V	200 mA	1 Output	Positive	50 uA	55 dB	Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 200 mA low quiescent current very low noise LDO LDK120PU18R STMicroelectronics 1: €0.344 289In Stock	Mfr. Part No. LDK120PU18R Mouser Part No 511-LDK120PU18R	STMicroelectronics	LDO Voltage Regulators 200 mA low quiescent current very low noise LDO Learn More about STMicroelectronics stm ldk120p regulator	Datasheet	289In Stock	Cut Tape €0.344 €0.24 €0.213 €0.184 View Reel €0.148 €0.168 €0.161 €0.156 €0.148 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	DFN-6	1.8 V	200 mA	1 Output	Positive	100 uA	55 dB	Fixed	- 40 C	+ 125 C	100 mV		LDK120	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 300mA Low Quiescent Crnt low noise LDO LDK130C-R STMicroelectronics 1: €0.344 5,847In Stock	Mfr. Part No. LDK130C-R Mouser Part No 511-LDK130C-R	STMicroelectronics	LDO Voltage Regulators 300mA Low Quiescent Crnt low noise LDO Learn More about STMicroelectronics stm ldk130c regulator	Datasheet	5,847In Stock	Cut Tape €0.344 €0.243 €0.213 €0.187 Reel €0.145 View €0.173 €0.164 €0.155 €0.138 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-323-5	Adjustable	300 mA	1 Output	Positive	30 uA		Adjustable	- 40 C	+ 125 C	100 mV		LDK130	Reel, Cut Tape, MouseReel
LDO Voltage Regulators 300mA low Q LDO 1.9 to 5.5V 100mV LDK130C18R STMicroelectronics 1: €0.482 338In Stock	Mfr. Part No. LDK130C18R Mouser Part No 511-LDK130C18R	STMicroelectronics	LDO Voltage Regulators 300mA low Q LDO 1.9 to 5.5V 100mV Learn More about STMicroelectronics stm ldk130c regulator	Datasheet	338In Stock	Cut Tape €0.482 €0.338 €0.303 €0.263 View Reel €0.145 €0.244 €0.186 €0.178 €0.145 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	SOT-323-5	1.8 V	300 mA	1 Output	Positive	30 uA	55 dB	Fixed	- 40 C	+ 125 C	100 mV		LDK130	Reel, Cut Tape, MouseReel