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供应AC/DC宽输入范围降压LED驱动器，可为终端客户提供样品及技术支持！

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型号：PT6911

封装：SOP8

品牌：PCT/普诚

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DESCRIPTION

The PT6911 is ideally suited for AC/DC buck LEDdriver with external MOSFET. Since the PT6911includes a 12V~450V linear regulator which allows it towork from a wide range of input voltages without theneed for an external low voltage supply. Besides, thePT6911 operates in hysteretic control mode; thecontroller achieves good output current regulationwithout the need for any loop compensation. ThePT6911 delivers constant current within high accuracyto a wide variety and number of series connectedLEDs.

The PT6911 includes PWM dimming and lineardimming functions. The PWM dimming input canaccept an external control signal with a duty cycle of0~100.00% and a frequency between 100Hz and a fewKHz. Output current to LED string can be programmedto any value between 0 to its maximum value by PWMdimming. Also, a 0.1~1.2V linear dimming input can beused for linear dimming of the LED current. 

FEATURES

● Wide Input Voltage: 12V ~ 450V DC

● Hysteretic controller

● ±5% Output Current Accuracy

● Low Stand-by Power Dissipation Soft Start

● PWM Low-frequency Dimming and Linear Dimming

● Thermal Shutdown 160°C Typical

● SOP-8 Package

APPLICATIONS

● AC/DC LED Driver

● LED Bulbs

● Constant-Current driver

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