The LED7706 is a high-efficiency LED driver chip from STMicroelectronics. It can provide up to 36V of power for LCD panel backlights and can be dimmed using a PWM signal.
This document describes the LED7706, a monolithic boost converter and six controlled current generators designed for the backlights of LCD panels. The device manages up to 36 V output voltage and can sink up to 30 mA per row, with features for open and shorted LED fault detection and PWM dimming.
| Input voltage range | 4.5 to 36 V |
|---|---|
| Output voltage | Up to 36 V |
| Switching frequency | 200-kHz to 1-MHz adjustable |
| Rows | Six rows |
| Max current per row | 30 mA |
| LEDs per row | Up to 10 |
| Dimming frequency | 20 kHz |
| Current matching accuracy | +2.0% |
| Efficiency | 91% |
The device can manage an output voltage of up to 36 V.
The device supports six rows with a maximum current capability of 30 mA per row.
The minimum dimming time is less than 500 ns.
Yes, the device detects and manages open and shorted LED faults.