DESCRIPTION

The PT6907 is a buck LED driver which has linear dimming function with normal switch ON/OFF. While turning-on the switch first time, the LED current will increase from the minimum value to the maximum current during about 9 seconds. The PT6907 builds-in exponential algorithm and the LED’s brightness changes smoothly and linearly. During the dimming processing, you can turn-off the switch when the LED’s brightness reaches the level you want. The PT6907 can remember and hold the status for a certain time which is programmable after turned-off.

FEATURES

• 8V to 12V Input Voltage Range

• Low Start-up Current

• Constant Frequency Operation, 50kHz typical

• Open Loop Peak Current Controller

• Linear Dimming with Normal Switch On/Off

• Programmable Holding Time

• Dimming with Exponential Algorithm, More Suitable for Human Eyes.

• 10bit DAC Integrated for Synchronous Application, More Flexible for Group Control

• Normal Switch Compatible

• SOP8 Package

APPLICATIONS

• Offline LED Lamps and Fixtures

• Office and Home LED Lightings

• LED Table Lamps

• Signage and Decorative LED Lightings