PT7018 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 PT7018 adopts a 500V single-chip integrated power MOSFET, which requires only a few external components to achieve excellent constant current characteristics.

The PT7018 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.

PT7018 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.

PT7018 is available in SOP8/TO-92/SOT23-3 packages.

Features

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

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

Critical Mode Operation without Inductor Compensation

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

Up to ±5% LED current accuracy

LED short circuit protection

Intelligent temperature control technology to avoid high temperature light flash

Completely eliminate the flashback after turning off the lights

Pin floating protection

application

Bulb Light/Candle Light/Corn Light

Ceiling light/T5/T8 tube

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