202202A.pdf

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.
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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.
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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 • sales@skyworksinc.com • www.skyworksinc.com
202202A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 23, 2012
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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.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202202A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 23, 2012