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NCL30076

ON Semiconductor

Quasi-Resonant Buck Controller

Quasi-Resonant Buck Controller for Precise Current Regulation and Wide Analog Dimming NCL30076 The NCL30076 is a DC−DC ...


ON Semiconductor

NCL30076

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Description
Quasi-Resonant Buck Controller for Precise Current Regulation and Wide Analog Dimming NCL30076 The NCL30076 is a DC−DC buck controller for wide dimming range down to 1% by analog dimming control to relieve audible noise and flicker in PWM dimming. ON Semiconductor’s proprietary LED current calculation technique driven by zero input offset amplifiers performs precise constant current in the whole analog dimming range. Multi−mode operation provides high efficiency with minimized switching loss by QR at heavy load and deep analog dimming by DCM at light load. PWM dimming control is also provided in case that constant LED color temperature is required. The NCL30076 has several protections such as LED short protection, over current protection, thermal shutdown and VDD over voltage protection for robust system reliability. Features Wide Analog Dimming Range: 1~100% Low CC Tolerance: ±2% at 100% Load & ±20% at 1% Load Low System BOM LED Off Mode at Standby Low Standby Current PWM Dimming Available Gate Sourcing and Sinking Current of 0.5 A/0.8 A Robust Protection Features ♦ LED Short Protection ♦ Over Current Protection ♦ Thermal Shutdown ♦ VDD Over Voltage Protection Typical Applications LED Lighting System www.onsemi.com 8 1 SOIC−8 NB CASE 751 MARKING DIAGRAM L30076AA AWLYYWW L30076 AA A WL YYWW = Specific Device Code = Default Trimming Option = Assembly Location = Wafer Lot Traceability Code = 4 Digit Data Code PIN ASSIGNMENT BIAS CSZCD SG FB (Top View) ...




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