DEI1090中文资料LED Driver with Square Law Dimming Control数据手册DEI规格书

描述 Description

The DEI1090 device is a 16 pin bipolar integrated circuit designed to drive nine LEDs and provide Pulse Width Modulated (PWM) dimming control according to the luminance curve of incandescent lamps. The device squares the analog control input and produces a PWM waveform used to enable or disable the current outputs. The LED brightness is controlled by the PWM duty cycle. All nine LEDs are driven at the same adjustable drive current. Drivers can be cascaded to synchronously drive additional LED groups. The dimming control input may be a DC or AC voltage.

特性 Features

• Emulates incandescent lamp \"Square Law\" luminance curve.
• LED dimming controlled by Pulse Width Modulation ranging from 50HZ to 200HZ.
• LED current adjustable from 10mA to 20mA.
• 200:1 Dimming Range at 50Hz. 40:1 Dimming Range at 200Hz
• Drives 8 LED outputs with matched current drive.
• Drivers can be cascaded to synchronously drive additional LEDs.
• Plastic 16 lead SOIC package.