The STEVAL-ILL070V4 from STMicroelectronics is a 35W dimmable single string LED driver using HVLED001A and STF10LN80K5. It is intended to drive 1 LED string with maximum output current of 700mA. The LED current can be finely adjusted using either a 0 to 10V interface or a PWM signal (provided by microcontroller) on the SELV portion of board. On secondary side, the board includes a connector to plug an auxiliary linear on switching voltage regulator side to supply small circuits (e.g IoT wireless expansions like BLE, spirit or Wi-Fi modules). A very high power factor and efficiency are obtained even at light loads. Input voltage variations, excessive input voltage (overvoltage like surges or bursts) and very low input voltages are managed by the HVLED001A protections, improving reliability of application. The output capacitor is automatically discharged at turn-off to prevent any harm from contact with output connector.

• Input voltage VIN = 90 to 305VRMS, frequency of 45 to 66Hz
• Output current of 700mA (VLED = 24V to 48V)
• Dimming of 100% to 10%
• Dimming interfaces of 0 to 10V and PWM input
• High power factor, low THD
• Efficiency >, 90% at full load, fast VOUT discharge
• Output open circuit, overload protection include auto restart for safe operation
• Open load voltage limiting (52.4V), optional remote turn-off input
• Optional 3.3V, 0.1A voltage regulator

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