AS3824 RENESAS | Alldatasheet
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
Features
▪ Supports all LED backlight topologies ▪ No limit of VLED or ILED, device is not exposed to high voltage/high current ▪ Optimum power savings through local dimming ▪ 16 fully flexible 12 bit PWM generators (period, high time, delay, reverse) ▪ One global highly accurate 10 bit DAC which sets the LED current (±0.5% accuracy) ▪ High dynamic range boost function ▪ 16 independent 8 bit DACs can be used to boost/decrease LED current within certain frames ▪ Global dimming mode option ▪ AS3824E/E1 are pre-programmed as external PWM mode (DPWM mode), V SYNC pin is used as PWM input. AS3824A/A1 are pre-programmed as SPI mode ▪ VSYNC and HSYNC inputs, as well as integrated digital PLL for synchronization with TV frame ▪ Lowest BOM ▪ Due to 2 pin concept of the output channel: no HV protection, no cascade FETs ▪ Feedback function is compatible to every DC- DC architecture and configurable via SPI ▪ Short/OPEN LED detection, temperature shutdown, register lock/unlock, SPI transfer checksum
Applications
▪ HD TVs ▪ UHD TVs ▪ LCD Monitors
Figure 1. AS3824 Typical Application