LED Lighting Driver ICs – Mouser South Africa

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NSI45 Constant Current Regulators

onsemi NSI45 Constant Current Regulators are two-terminal linear constant current regulators. These regulators are simple, economical, and robust devices that provide a cost-effective solution for regulating current in LEDs. The NSI45 regulators are based on Self-Biased Transistor technology and regulate output current over a wide input voltage range. These regulators are designed with a negative temperature coefficient to protect LEDs from thermal runaway at extreme voltages and operating temperatures. The NSI45 regulators require no external components and have a high anode-cathode voltage rating that withstands surges common in automotive, industrial, and commercial signage applications.

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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.	Number of Outputs	Topology	Output Current	Package/Case	Supply Voltage - Max	Supply Voltage - Min	Operating Frequency	Output Voltage	Series	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging
LED Lighting Driver ICs SOD 123 20MA 15% CCR NSV45020T1G onsemi 1: $0.30 2,921In Stock	Mfr. Part No. NSV45020T1G Mouser Part No 863-NSV45020T1G	onsemi	LED Lighting Driver ICs SOD 123 20MA 15% CCR Learn More about onsemi solutions ivn lighting	Datasheet	2,921In Stock	Cut Tape $0.30 $0.201 $0.178 $0.152 View Reel $0.116 $0.136 $0.129 $0.123 $0.116 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	1 Output	Boost, Buck	20 mA	SOD-123-2	45 V	45 V	100 Hz to 100 kHz	Adjustable	NSI45020	- 55 C	+ 150 C	AEC-Q100	Reel, Cut Tape, MouseReel
LED Lighting Driver ICs LED Driver SOD 123 20mA 10% CCR NSI45020AT1G onsemi 1: $0.23 242,353In Stock 30,600On Order	Mfr. Part No. NSI45020AT1G Mouser Part No 863-NSI45020AT1G	onsemi	LED Lighting Driver ICs LED Driver SOD 123 20mA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	242,353In Stock 30,600On Order On Order Ship Dates Mfr. No: NSI45020AT1G Stock: 242,353 Can Dispatch Immediately On Order: 6,600 Expected 2026/10/21 24,000 Expected 2026/12/15 Factory Lead Time: 53 Weeks	Cut Tape $0.23 $0.154 $0.134 $0.117 View Reel $0.085 $0.107 $0.097 $0.091 $0.085 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,090 : 3,000	1 Output	Boost, Buck	20 mA	SOD-123	45 V	45 V	1 MHz	Adjustable	NSI45020A	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOD 123 20mA 15% CCR NSI45020T1G onsemi 1: $0.24 55,791In Stock 12,000Expected 2026/10/14	Mfr. Part No. NSI45020T1G Mouser Part No 863-NSI45020T1G	onsemi	LED Lighting Driver ICs SOD 123 20mA 15% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	55,791In Stock 12,000Expected 2026/10/14	Cut Tape $0.24 $0.178 $0.158 $0.135 View Reel $0.105 $0.124 $0.117 $0.112 $0.105 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,000 : 3,000	1 Output	Boost, Buck	20 mA	SOD-123	45 V	45 V	1 MHz	Adjustable	NSI45020	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOT223 25mA 10% CCR NSI45025AZT1G onsemi 1: $0.53 19,334In Stock	Mfr. Part No. NSI45025AZT1G Mouser Part No 863-NSI45025AZT1G	onsemi	LED Lighting Driver ICs SOT223 25mA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	19,334In Stock	Cut Tape $0.53 $0.374 $0.329 $0.291 View Reel $0.247 $0.27 $0.258 $0.247 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	1 Output	Boost, Buck	25 mA	SOT-223	45 V	45 V	1 MHz	Adjustable	NSI45025AZ	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOD 123 30mA 10% CCR NSI45030AT1G onsemi 1: $0.211 47,718In Stock 156,000Expected 2027/10/13	Mfr. Part No. NSI45030AT1G Mouser Part No 863-NSI45030AT1G	onsemi	LED Lighting Driver ICs SOD 123 30mA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	47,718In Stock 156,000Expected 2027/10/13	Cut Tape $0.211 $0.147 $0.129 $0.11 View Reel $0.083 $0.10 $0.094 $0.091 $0.083 MouseReel Available	Min.: 1 Mult.: 1 Max.: 6,000 : 3,000	1 Output	Boost, Buck	30 mA	SOD-123	45 V	45 V	1 MHz	Adjustable	NSI45030A	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOD 123 25mA 10% CCR NSI45025AT1G onsemi 1: $0.22 1,799In Stock 48,000On Order	Mfr. Part No. NSI45025AT1G Mouser Part No 863-NSI45025AT1G	onsemi	LED Lighting Driver ICs SOD 123 25mA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	1,799In Stock 48,000On Order On Order Ship Dates Mfr. No: NSI45025AT1G Stock: 1,799 Can Dispatch Immediately On Order: 12,000 Expected 2027/04/09 36,000 Expected 2027/07/07 Factory Lead Time: 53 Weeks	Cut Tape $0.22 $0.147 $0.13 $0.11 View Reel $0.085 $0.102 $0.097 $0.091 $0.085 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,240 : 3,000	1 Output	Boost, Buck	25 mA	SOD-123	45 V	45 V	1 MHz	Adjustable	NSI45025A	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOT223 30mA 10% CCR NSI45030AZT1G onsemi 1: $0.53 4,170In Stock	Mfr. Part No. NSI45030AZT1G Mouser Part No 863-NSI45030AZT1G	onsemi	LED Lighting Driver ICs SOT223 30mA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	4,170In Stock	Cut Tape $0.53 $0.374 $0.335 $0.291 View Reel $0.24 $0.27 $0.258 $0.24 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	1 Output	Boost, Buck	30 mA	SOT-223	45 V	45 V	1 MHz	Adjustable	NSI45030AZ	- 55 C	+ 150 C		Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOD 123 20MA 10% CCR NSV45020AT1G onsemi 1: $0.23 10,699In Stock	Mfr. Part No. NSV45020AT1G Mouser Part No 863-NSV45020AT1G	onsemi	LED Lighting Driver ICs SOD 123 20MA 10% CCR Learn More about onsemi solutions ivn lighting	Datasheet	10,699In Stock	Cut Tape $0.23 $0.158 $0.14 $0.116 View Reel $0.093 $0.11 $0.104 $0.10 $0.093 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,000 : 3,000	1 Output	Boost, Buck	20 mA	SOD-123	45 V	45 V	100 Hz to 100 kHz	Adjustable	NSI45020A	- 55 C	+ 150 C	AEC-Q100	Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOD 123 25MA 10% CCR NSV45025AT1G onsemi 1: $0.30 3,000In Stock	Mfr. Part No. NSV45025AT1G Mouser Part No 863-NSV45025AT1G	onsemi	LED Lighting Driver ICs SOD 123 25MA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	3,000In Stock	Cut Tape $0.30 $0.207 $0.184 $0.158 View Reel $0.126 $0.147 $0.14 $0.133 $0.126 MouseReel Available	Min.: 1 Mult.: 1 : 3,000				SOD-123					NSI45025A			AEC-Q100	Reel, Cut Tape, MouseReel
LED Lighting Driver ICs SOT223 25MA 10% CCR NSV45025AZT1G onsemi 1: $0.511 357In Stock	Mfr. Part No. NSV45025AZT1G Mouser Part No 863-NSV45025AZT1G	onsemi	LED Lighting Driver ICs SOT223 25MA 10% CCR Learn More about onsemi on semi nsi45 current regulators	Datasheet	357In Stock	Cut Tape $0.511 $0.354 $0.316 $0.273 View Reel $0.22 $0.255 $0.243 $0.22	Min.: 1 Mult.: 1 : 1,000				SOT-223					NSI45025AZ			AEC-Q100	Reel, Cut Tape
LED Lighting Driver ICs SOD 123 30MA 10% CCR NSV45030AT1G onsemi 1: $0.23 5,406In Stock	Mfr. Part No. NSV45030AT1G Mouser Part No 863-NSV45030AT1G	onsemi	LED Lighting Driver ICs SOD 123 30MA 10% CCR Learn More about onsemi solutions ivn lighting	Datasheet	5,406In Stock	Cut Tape $0.23 $0.159 $0.141 $0.12 View Reel $0.093 $0.11 $0.105 $0.10 $0.093 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	1 Output	Boost, Buck	30 mA	SOD-123	45 V	45 V	100 Hz to 100 kHz	Adjustable	NSI45030A	- 55 C	+ 150 C	AEC-Q100	Reel, Cut Tape, MouseReel

NSI45 Constant Current Regulators

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