NCL30002: LED Driver, Offline Buck, Power Factor Corrected

The NCL30002 is a switch mode power supply controller intended for low to medium power single stage power factor (PF) corrected LED Drivers. The device operates as a critical conduction mode(CrM) buck controller to regulate LED current at a high power factor for a specific line voltage range. The current limit threshold is tightly trimmed allowing open loop control techniques to reduce parts count while maintaining accurate current regulation and high power factor. CrM operation is particularly suited for LED applications as very high efficiency can be achieved even at low power levels. These are important in LED lighting to comply with regulatory requirements and meet overall system luminous efficacy requirements. In CrM, the switching frequency will vary with line and load. Switching losses are low as recovery losses in the output rectifier are negligible since the current goes to zero prior to reactivating the main MOSFET switch.

Features

Low 485 mV Current Sense threshold
Wide -40 to + 125 °C Temperature Range
Low typical 24 µA startup current
Fixed On time/Peak Current Power Factor Correction Control Architecture
Maximum Vcc of 20 Vdc
500 mA Source / 800 mA Sink MOSFET Gate Driver
± 3.1% Current limit accuracy across complete temperature range

Benefits

Lower power dissipation
Suitable for indoor and outdoor lighting applications
Faster startup time with reduced power dissipation

Applications

LED Bulbs
LED Downlights
Power Factor Corrected LED Drivers
LED Fluorescent Tube Replacements

End Products

High Efficiency LED Lighting

Design & Development Tools (1)

Document Title	Document ID/Size	Revision	Revision Date
NCL30002 Design Worksheet	NCL30002 DWS.XLS (6064.0kB)	0

Package Drawings (1)

Document Title	Document ID/Size	Revision
SOIC-8 Narrow Body	751-07 (62.6kB)	AK

Application Notes (2)

Document Title	Document ID/Size	Revision	Revision Date
Dimming the NCL30002 LED Driver	AND9096/D (126kB)	2	Feb, 2014
NCL30002 High Power Factor Buck LED Driver	AND9094/D (258kB)	1	Oct, 2013

Evaluation Board Documents (16)

Document Title	Document ID/Size	Revision
NCL30002DIM1GEVB Bill of Materials ROHS Compliant	NCL30002DIM1GEVB_BOM_ROHS.PDF (88.0kB)	1
NCL30002DIM1GEVB Gerber Layout Files (Zip Format)	NCL30002DIM1GEVB_GERBER.ZIP (39.0kB)	0
NCL30002DIM1GEVB Schematic	NCL30002DIM1GEVB_SCHEMATIC.PDF (207.0kB)	0
NCL30002DIM1GEVB Test Procedure	NCL30002DIM1GEVB_TEST_PROCEDURE.PDF (281.0kB)	0
NCL30002DIM2GEVB Bill of Materials ROHS Compliant	NCL30002DIM2GEVB_BOM_ROHS.PDF (87.0kB)	1
NCL30002DIM2GEVB Gerber Layout Files (Zip Format)	NCL30002DIM2GEVB_GERBER.ZIP (39.0kB)	0
NCL30002DIM2GEVB Schematic	NCL30002DIM2GEVB_SCHEMATIC.PDF (207.0kB)	0
NCL30002DIM2GEVB Test Procedure	NCL30002DIM2GEVB_TEST_PROCEDURE.PDF (281.0kB)	0
NCL30002LED1GEVB Bill of Materials ROHS Compliant	NCL30002LED1GEVB_BOM_ROHS.PDF (95.0kB)	1
NCL30002LED1GEVB Gerber Layout Files (Zip Format)	NCL30002LED1GEVB_GERBER.ZIP (39.0kB)	0
NCL30002LED1GEVB Schematic	NCL30002LED1GEVB_SCHEMATIC.PDF (178.0kB)	0
NCL30002LED1GEVB Test Procedure	NCL30002LED1GEVB_TEST_PROCEDURE.PDF (282.0kB)	0
NCL30002LED2GEVB Bill of Materials ROHS Compliant	NCL30002LED2GEVB_BOM_ROHS.PDF (89.0kB)	1
NCL30002LED2GEVB Gerber Layout Files (Zip Format)	NCL30002LED2GEVB_GERBER.ZIP (39.0kB)	0
NCL30002LED2GEVB Schematic	NCL30002LED2GEVB_SCHEMATIC.PDF (178.0kB)	0
NCL30002LED2GEVB Test Procedure	NCL30002LED2GEVB_TEST_PROCEDURE.PDF (282.0kB)	0

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
Power Factor Corrected Buck LED Driver	NCL30002/D (226.0kB)	0

Evaluation/Development Tool Information

Product	Status	Compliance	Short Description
NCL30002DIM1GEVB	Active	Pb-free	120 V Dimmable HPF Buck Evaluation Board
NCL30002DIM2GEVB	Active	Pb-free	230 V Dimmable HPF Buck Evaluation Board
NCL30002LED1GEVB	Active	Pb-free	100 - 132 Vac Hi-PF 750 mA / 18 W Buck Driver Evaluation Board
NCL30002LED2GEVB	Active	Pb-free	200 - 265 Vac Hi-PF 750 mA / 18 W Buck Driver Evaluation Board