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OB3390 is a primary side control offline LED lighting which can achieve accurate LED current and low system cost for an isolate lighting application in a single stage converter. It can significantly simplify the LED lighting system design by eliminating the secondary side feedback components and the optocoupler.
Features:
＃ High precision Constant Current Regulation at Universal AC input
＃ Primary-side Sensing and Regulation Without TL431 and Opto-coupler
＃ Low System Cost and High Efficiency
＃ Programmable CC Regulation
＃ Built-in Primary winding inductance compensation
＃ Driver BJT Switch
＃ Ultra Low Start-up Current (Typ. 1uA)
＃ LED short Protection
＃ LED open Protection
＃ Cycle-by-Cycle Current Limiting
＃ Built-in Leading Edge Blanking (LEB)
＃ VDD Over Voltage Protection
＃ VDD Under Voltage Lockout with Hysteresis
＃ Available in SOT23-5 packages, RoHS compliant
Applications:
＃ LED Lighting
＃ LED PAR Lamp
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Device
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Type
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Package
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Max Pout(W)(85~264V)
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OB3390
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Driver
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SOT23-5
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5
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OB3391
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BJT Power Switch
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SOP8
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1~2
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Typical Application:
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