The APW7136A/B/C is a current-mode and fixed frequency boost converter with an integrated N-FET to drive up to 8 white LEDs in series.The series connection allows the LED current to be identICal for uniform brightness. Its low onresistance of NFET and feedback voltage reduce power loss and achieve high efficiency. Fast 1MHz currentmode PWM operation is available for input and output capacitors and a small inductor while minimizing ripple on the input supply. The OVP pin monitors the output voltage and stops switching if exceeds the overvoltage threshold. An internal softstart circuit eliminates the inrush current during start-up.
The APW7136A/B/C also integrates under-voltage lockout, over-temperature protection, and current-limit circuits. The APW7136/A/B/C is available in a SOT-23-6 packages.