描述 Description

2Ch High-Brightness Buck Converter LED Driver IC

DW8523A is a high efficiency step down converter for LED driver IC which provides a solution for
LED lighting of flat panel luminance and general DC voltage LED applications. DW8523A built in high side LED current sense circuit and protection circuit same as TSD, LED open, LED short and ambient temperature protection. DW8523A can adjust LED current by external analog signal. DW8523A can transfer external analog adjust signal to PWM logic signal. Also, DW8523A can prevent LED current flicker when LED current is lowered by analog dimming. Frequency of the PWM frequency is determined by external capacitor. DW8523A is well suited for applications requiring a wide input voltage range.

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(yīng)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