The T8601 is a low cost, simple, high-efficiency off-line LED driver IC. A built-in high voltage regulator enables the T8601 to work from 8Vdc to 450Vdc. The T8601 is operated in an open loop, peak current mode to produce a constant LED current rather than constant voltage. The T8601 drives an external power MOSFET in either a constant frequency or constant off-time mode. The T8601 features PWM and linear dimming capability. To control LED brightness, the LED current can be controlled by applying a PWM signal with a duty ratio of 0~100% and a frequency up to a few kilohertz, or it can be adjusted linearly to any value between 0 ~ 250mV(typ.) by applying an analog voltage to the LD pin. The T8601 is available in SOP-8 Lead-free package.
FEATURES
• Switch-mode controller for single switch LED driver
• Wide operating voltage range : 8Vdc ~ 450Vdc
• Open-loop peak current mode controller without loop compensation
• Constant frequency or constant off-time mode
• PWM or analog dimming capability
• Few external components required
• SOP-8 Lead-free Package
Applications
• TFT flat panel backlighting
• AC/DC LED lamps
• DC/DC, AC/DC LED drivers
• T5, T8 LED line bars
• MR-16 lamps
• Signage or decorative LED lamps
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