AS3695A

AS3693B AS3695A 16 channel white LED driver for LCD backlight austriamicrosystems Product Specification, Confidential Technical coantmesntAsGtill valid General Description The AS3695A is a 16 channels precision LED driver for use in LCD-backlight panels. Dynamic power feedback controls the external power supply to guarantee best efficiency. Build in safety features include thermal shutdown as well as open and short LED detection. The device is programmable via serial interface. 16 Channel LED driver Output voltage max. 30V Output current 120mA Linear current setting using 10-bit DAC Current accuracy ±0.5% @ VDAC=250mV Channel to Channel current accuracy ±0.2% Output slew rate programmable Current programmable with external resistor Digital current control with 16 independent PWM generators Free programmable 12 bit resolution ( period, high time and delay ) PWM-generator clock Internal RC-oscillator External Clock H-Sync, V-Sync inputs to synchronize with TV-set Direct PWM mode Undervoltage detection ( open LED ) Undervoltage auto-turnoff Overvoltage detection ( short LED ) Overvoltage auto-turnoff Temperature shutdown Register lock/unlock function Fault interrupt output 2 configurable supply regulation feedback outputs SPI interface 6kV ESD at current sink inputs 2kV ESD an all other pins Package QFN48 7x7mm, 0.5mm pitch Applications LED backlighting for LCD – TV sets and monitors 1 Block diagram VDD VDD VDD FB1 FB2 V2_5 VSSA VSSA VSS_SENSE CURR1 RES1 CURR2 RES2 CUR...