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MV1002SC 数据表(PDF) 5 Page - Suntan Capacitors |
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MV1002SC 数据表(HTML) 5 Page - Suntan Capacitors |
5 / 33 page MV1002SC 4 1. Overview 1.1 Features The MV1002SC is an LED driver IC that uses an external power supply and can consist solely of low-voltage pins. Omitting the auxiliary winding enables a single power supply configuration, and quasi-resonant operation in critical conduction mode raises efficiency and lowers noise. In general critical conduction mode, the switching frequency increases when the dimming ratio decreases. This increases switching losses and imposes limitations on the lowest dimming ratios, disadvantageously. When the dimming ratio decreases, the MV1002SC automatically switches from critical conduction mode to discontinuous conduction mode. This prevents the switching frequency increasing, reduces switching losses, and achieves smooth and deep dimming free of flickering. The MV1002SC has the following features: Allows quasi-resonant operation without auxiliary winding. Quasi-resonant operation in critical conduction mode helps achieve low input change, raises efficiency, and lowers noise. Off-time modulation enables deep dimming (1% or less). Allows PWM dimming input and linear dimming input. Allows LED open-circuit protection using auxiliary winding. Features built-in thermal shutdown, UVLO, and LED short-circuit protection. Allows configuration solely of low voltage pins using an external start-up circuit. 1.2 Block diagram CAT.No.1A0202-2E |
类似零件编号 - MV1002SC |
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类似说明 - MV1002SC |
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