FP7176-LED Driver with Average-Mode Constant Current Control  DataSheet
General Description
The FP7176 is an average current mode control LED driver IC operating in a constant off-time mode. FP7176 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 FP7176 can be powered from an 8.0 - 450V supply. A PWM dimming input is provided that accepts an external control TTL compatible signal. The output current can be programmed by an internal 277mV reference, or controlled externally through a 0 - 1.5V dimming input.
Features
Fast average current control
Internal 8 to 450V linear regulator
Programmable constant off-time switching
Linear and PWM dimming capability
Output short circuit protection with skip mode
Requires few external components for operation
Applications
DC/DC or AC/DC LED driver applications
LED street lighting
Back lighting of flat panel displays
General purpose constant current source
Signage and decorative LED lighting
Chargers
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