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AS3693A

austriamicrosystems AG
Part Number AS3693A
Manufacturer austriamicrosystems AG
Description 16 channel high precision LED driver
Published Mar 14, 2010
Detailed Description AS3693AA Product Brief www.DataSheet4U.com 1 General Description ƒ Product Brief Output slew rate limited to reduce E...
Datasheet PDF File AS3693A PDF File

AS3693A
AS3693A

Overview
AS3693AA Product Brief www.
DataSheet4U.
com 1 General Description ƒ Product Brief Output slew rate limited to reduce EMI AS3693A 16 channel high precision LED driver for LCD backlight The AS3693A is a 16 cannels high precision LED driver with build in PWM generators for building backlight panels in LCD-TV-sets.
External clock and synchronizing inputs allow the synchronization of the LCD backlight with the TV picture.
Local dimming and scan dimming is supported by 16 independent PWM generators with programmable delay, period and duty cycle.
Three free configurable dynamic power feedback circuits make the device usable for white LED as well as RGB backlights.
Build in safety features include thermal shutdown as well as open and short LED detection.
All circuit parameters are programmable via I2C or SPI interface.
ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Current programmable with external resistor 16 independent PWM generators with 12 bit resolution H-Sync, F-Sync inputs to synchronize with TVset Three independent power feedback for R-, G-, B-supply regulation Build in 5V shunt regulator I2C or SPI interface with 6 bit address Fault interrupt output Open LED detection Short LED detection Temperature shutdown 2 Key Features ƒ ƒ ƒ ƒ 16 independent LED channels Output current 70mA Output voltage up to 50V Absolute current accuracy ±0.
5% Package epTQFP64 3 Application LED Backlighting for LCD – TV Sets and Monitors www.
austriamicrosystems.
com (mpa) Revision 1.
0 / 2007-11-25 1-3 AS3693AA Product Brief www.
DataSheet4U.
com Block Diagram Vsupply FBG Vreg FBR FBB REF V2_5 PWM SMPS feedback PWM PWM Fault detectors PWM Reference, DAC PWM PWM PWM PWM AS3693 PWM PWM PWM 86 byte registers PWM PWM PWM PWM SPI / I2C Interface PWM Vsync Addr2 Addr1 Hsync GND SDO SDA SCL Fault CS V2_5 www.
austriamicrosystems.
com (mpa) Revision 1.
0 / 2007-11-25 2-3 AS3693AA Product Brief www.
DataSheet4U.
com Copyright Copyright © 1997-2007, austriamicrosystems AG, Schloss Pr...


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