The FP7179 is an average current mode control LED driver IC operating in a constant off-time mode. FP7179 does not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±2%.
The FP7179 can be powered from an 8.0 - 450V supply. PWM & Linear dimming input is provided that accepts an external control TTL compatible signal. The output current can be programmed by an internal 277mV reference.
特点
Fast Average Current Control
˙Internal 8 to 450V Linear Regulator
˙Linear and PWM Dimming Capability
˙Output Short Circuit Protection with Skip Mode
˙Requires Few External Components for Operation