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AS3693B1

austriamicrosystems
Part Number AS3693B1
Manufacturer austriamicrosystems
Description 16 Channel high precision LED driver
Published Feb 19, 2016
Detailed Description Technical coantmesntAsGtill valid AS3693B1 austriamicrosystems Product Specification, Confidential AS3693B1–16 Channe...
Datasheet PDF File AS3693B1 PDF File

AS3693B1
AS3693B1

Overview
Technical coantmesntAsGtill valid AS3693B1 austriamicrosystems Product Specification, Confidential AS3693B1–16 Channel high precision LED driver for LCD Backlight 1 General Description The AS3693B1 is a 16 channels high precision LED controller with build in PWM generators for driving external FETs in LCD-backlight panels.
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.
2 Key Features 16 Channel LED driver Output current only limited by external transistor Output voltage 0.
4V to 50V Absolute current accuracy +/- 0.
5% Output slew rate programmable Current programmable with external resistor Linear current control with 8 - bit DAC Linear current control with external analog voltage Digital current control with 16 independent PWM generators Free programmable 12 bit resolution ( period, high time and delay ) Overvoltage detection ( short LED ) Undervoltage detection ( open LED ) Temperature shutdown Fault interrupt output H-Sync, V-Sync inputs to synchronize with TVset Internal or external PWM – clock I2C interface SPI interface 5 bit device - address (sets device address and interface mode) Automatic supply regulation feedback Each output can be assigned to red, green or blue feedback.
Package MLF64, LQFP64 3 Applications • LED backlighting for LCD – TV sets and monitors www.
austriamicrosystems.
com Revision 1.
26 / 2011-04-02 1 - 33 VsyncsntAsGtill valid Hsync SDA SCL CS SDO Addr2 Addr1 Fault AS3693B1 austriamicrosystems 4 Block Diagram Vsupply Vreg FBB FBG FBR REF V2_5 PWM Reference, DAC PWM PWM F...


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