PRODUCT SUMMARY AAT2469 LCD TV Panel LED Backlight Driver Controller General Description Features The AAT2469 is a dedicated TVLite control IC for the AAT2499 TVLite LED drivers. One AAT2469 can control up to 8 AAT2499 TVLite LED drivers (up to 16 individual LED strings), providing a high-efficiency white LED backlight solution for large-sized LCD panels used in LCD TVs. • • • • • The AAT2469 includes an SPI compatible interface allowing fast independent digital control from the system. Four unique device addresses allow control of up to 64 LED strings. From the SPI interface, the AAT2469 generates serial shift data and clock signals to drive AAT2499 TVLite LED drivers. A voltage reference output adjusts LED current globally through an 8-bit resolution dot correction register. LED PWM gray scale and phase delay registers are programmable with 12-bit resolution(11-bit resolution at PWM doubling mode) and can be synchronized to the system VSYNC input signal. The AAT2469 provides fault handling and fault reporting of all controlled TVLite current sinks through an SPI interface. The AAT2469 provides an ICSFB signal, a current proportional signal of the CSFBO signal, to regulate the current mode DC-DC converter to optimize the LED supply voltage for each LED string from the CSFBO signal from the AAT2499 TVLite LED driver. • • • • • • VIN Range: 4.5V to 5.5V Controls up to 8 AAT2499 TVLite drivers 15MHz SPI Interface Read/Write Registers Four Unique Device Addresses ▪▪ Up to 64 LED Strings High Resolution Digital Control for LED Current ▪▪ 12-Bit Resolution Gray Scale PWM Brightness1 ▪▪ 12-Bit Resolution Channel Phase Delay1 ▪▪ 8-Bit Resolution Current Setting (Dot Correction) VSYNC, PWM and Delay Synchronization Integrated System Fault Reporting ▪▪ Open and Short Circuit LED(s) ▪▪ Programmable Short Detection Threshold ▪▪ Over-Temperature Protection Soft-Start to Minimize Inrush Current 16 pin SOP16, 1.27mm pitch -20°C to +85°C Temperature Range Applications • Large Size LCD TVs, Panels • LCD Monitors • White LED Backlighting The AAT2469 is available in a Pb-free, 16 pin SOP package. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202202A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 23, 2012 1 PRODUCT SUMMARY AAT2469 LCD TV Panel LED Backlight Driver Controller Ordering Information Package Marking1 Part Number (Tape and Reel)2 SOP-16 2469 XXYY AAT2469IAB-T1 Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. Package Information SOP-16 All dimensions in millimeters. 1. XXYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. 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Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. 2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202202A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 23, 2012