描述 Description

AC Input High-Voltage Linear LED Driver

DW8560 is an integrated AC input high-voltage LED driver for direct line operation. 220V AC line
voltage is rectified by Bridge Rectifier, and supply for LED and DW8560. During one rectified line
voltage cycle, 4 HVLED segments are turned on in proper sequence as the line voltage increases
and turned off in reverse sequence as the line voltage decreases. DW8560 setup LED current for
every LED segment, which ensures high power factor and low THD. LED current can be setup via
an external resistor conveniently. The setup range is 10~50mA. DW8560 regulates the effective LED
current and ensures the LED current is constant when VIN varies. DW8560 provides over temperature protection.

特性 Features

- Constant output current invariant to supply and load voltage change
- 5V to 40V supply voltage
- Up to 300mA adjustable regulated output current
- Built-in thermal derating circuit
- Available PWM dimming control
- Output current adjusted through an external resistor
- SOT89-5L Package

應用 Application

- LED light bulbs
- Signage and decorative LED lighting
- General lighting of flat panel displays
- RGB backlighting LED driver
- Current stabilizer with DC/DC or AC/DC
- General purpose constant current source