WS9013 is a high-precision LED constant current driver chip with ultra-low system cost, suitable for non-isolated step-down LED constant current power supply system with full range of AC input voltage of 85V-265V.

The WS9013 uses a 500V single-chip integrated power MOSFET, which requires only a few external components to achieve excellent constant current characteristics.

The WS9013 chip has a high-precision current sampling circuit, and adopts advanced constant current control technology to achieve high-precision LED constant current output and excellent linear adjustment rate. The chip works in the critical mode of inductor current, and the system output current does not change with the change of inductance and LED operating voltage, achieving excellent load regulation.

WS9013 has multiple protection functions, including cycle-by-cycle current limit protection (OCP), LED short-circuit protection, VDD under-voltage protection, intelligent temperature control, pin floating protection, etc.

WS9013 is available in SOP8/TO-92/SOT23-3 packages.

Features:

n 500V single-chip integrated circuit, very few peripheral components

n SOP8/TO-92/SOT23-3 package, highly space saving

n Critical mode operation without inductance compensation

n The chip is self-powered, no power supply components such as start-up resistors are required

n Up to ±5% LED current accuracy

n LED short circuit protection

n Intelligent temperature control technology to avoid high temperature lights flashing

n Completely eliminate the flashback after turning off the lights

n pin floating protection

Application: bulb light/candle light/corn light, ceiling light/T5/T8 tube

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