LDO Voltage Regulators – Mouser South Africa

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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 (USD) 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: $0.73 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 2026/10/12 12,000 Expected 2026/12/14 Factory Lead Time: 30 Weeks	Cut Tape $0.73 $0.52 $0.468 $0.409 View Reel $0.311 $0.381 $0.364 $0.35 $0.311 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: $0.77 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 $0.77 $0.551 $0.497 $0.434 Reel $0.342 View $0.405 $0.387 $0.373 $0.335 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: $0.77 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 $0.77 $0.551 $0.497 $0.434 Reel $0.354 View $0.405 $0.387 $0.373 $0.345 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: $1.05 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 2026/10/12 30,000 Expected 2027/05/05 Factory Lead Time: 30 Weeks	Cut Tape $1.05 $0.761 $0.685 $0.604 View Reel $0.486 $0.564 $0.54 $0.523 $0.486 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: $1.12 524In 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	524In Stock 24,000On Order On Order Ship Dates Mfr. No: LD39050PUR Stock: 524 Can Dispatch Immediately On Order: 9,000 Expected 2026/10/12 15,000 Expected 2026/10/16 Factory Lead Time: 30 Weeks	Cut Tape $1.12 $0.811 $0.733 $0.647 View Reel $0.534 $0.605 $0.58 $0.566 $0.534 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: $1.31 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 $1.31 $0.947 $0.856 $0.757 View Reel $0.632 $0.709 $0.682 $0.668 $0.632 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: $1.14 549In Stock 9,000Expected 2026/12/11	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	549In Stock 9,000Expected 2026/12/11	Cut Tape $1.14 $0.815 $0.735 $0.648 Reel $0.511 View $0.606 $0.582 $0.564 $0.476 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: $0.79 421In Stock 25,000Expected 2027/09/20	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 2027/09/20	Cut Tape $0.79 $0.549 $0.493 $0.43 View Reel $0.342 $0.401 $0.383 $0.368 $0.352 $0.342 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: $0.80 1,468In Stock 3,000Expected 2026/10/20	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 2026/10/20	Cut Tape $0.80 $0.562 $0.504 $0.44 Reel $0.359 View $0.411 $0.391 $0.376 $0.35 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: $0.69 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 $0.69 $0.493 $0.443 $0.387 Reel $0.314 View $0.361 $0.345 $0.331 $0.306 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: $0.611 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 $0.611 $0.461 $0.423 $0.383 Reel $0.338 View $0.363 $0.352 $0.342 $0.337 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: $0.361 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 $0.361 $0.252 $0.226 $0.212 Reel $0.149 View $0.202 $0.194 $0.145	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: $0.34 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 $0.34 $0.23 $0.205 $0.177 View Reel $0.14 $0.165 $0.158 $0.152 $0.147 $0.14 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: $0.89 1,125In 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	1,125In Stock 9,000On Order On Order Ship Dates Mfr. No: LDFM33PUR Stock: 1,125 Can Dispatch Immediately On Order: 3,000 Expected 2026/10/09 6,000 TBD Factory Lead Time: 30 Weeks	Cut Tape $0.89 $0.64 $0.576 $0.507 View Reel $0.416 $0.473 $0.454 $0.438 $0.416 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: $0.32 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 $0.32 $0.23 $0.208 $0.183 View Reel $0.143 $0.171 $0.17 $0.143 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: $0.38 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 $0.38 $0.263 $0.234 $0.202 Reel $0.16 View $0.187 $0.178 $0.17 $0.156 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: $0.361 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 $0.361 $0.251 $0.226 $0.197 Reel $0.154 View $0.194 $0.185 $0.177 $0.148 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: $0.361 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 $0.361 $0.252 $0.227 $0.199 View Reel $0.16 $0.185 $0.178 $0.171 $0.16 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: $0.39 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 $0.39 $0.269 $0.24 $0.207 Reel $0.163 View $0.191 $0.183 $0.174 $0.152 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: $0.38 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 $0.38 $0.264 $0.235 $0.204 Reel $0.16 View $0.188 $0.178 $0.171 $0.156 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: $0.38 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 $0.38 $0.264 $0.235 $0.204 Reel $0.16 View $0.188 $0.178 $0.171 $0.156 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: $0.37 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 $0.37 $0.261 $0.234 $0.202 Reel $0.16 View $0.187 $0.178 $0.17 $0.155 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: $0.40 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 $0.40 $0.279 $0.248 $0.214 View Reel $0.172 $0.195 $0.187 $0.181 $0.172 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: $0.40 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 $0.40 $0.283 $0.248 $0.217 Reel $0.169 View $0.201 $0.191 $0.18 $0.16 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: $0.561 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 $0.561 $0.393 $0.352 $0.306 View Reel $0.169 $0.284 $0.216 $0.207 $0.169 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