DW8522
2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming
High-Brightness Step-Down LED Driver Controllers with High-Side Current-Sensing and Rapid Current-Pulsing Capability
DW8522 General Description
The DW8522 is a high efficiency step down (Buck) converter for LED driver IC which provide a solution for MR16,General lighting of flat panel displays and general DC voltage LED applications.
The DW8522 built in high-side current sensing circuit and protection circuit same as TSD, Current limit. It can use
PWM dimming and Analog dimming.
The DW8522 DW8522 can work in - 40 ° C to + 125 ° C auto level temperature range, The DW8522 are available in a tiny (3 mm x 3 mm x 0.75 mm) 6 pins TDFN package and (4.9 mm * 6.0 mm * 1.52 mm) SOIC - 8 package.
DW8522 Features：
●4.5V to 40V Input voltage range
●Single pin On/Off and brightness control using DC voltage and PWM
●Thermal derating function
●High-Side current sense
●20KHz Maximum dimming frequency
●Hysteretic Buck control : Low parts count
●Up to 2MHz switching frequency
●± 2.5% LED Current Accuracy
●+ 5V,10mA internal regulator
●-40 to 125℃ operating temperature range
DW8522 Application：
●MR16 Lighting
●Offline LED Lamps and fixtures
●General lighting of flat panel displays
●RGB backlighting LED driver
●Current stabilizer with DC/DC or AC/DC
●General purpose LED Lighting
DW8522 Ordering Information
DW8522 Block Diagram：
DW8522 Pin Information：
DW8522 Typical Application Circuit ：
DW8522 and MAX18620 fully compatible
