AS3696

AS3693B austriamicrosystems AS3696 4 channel white LED controller for general lighting applications Product specification General Description The AS3696 is a 4 channels precision LED controller with PWM inputs or internal PWM generator for driving external FETs in precise lighting applications. Build in safety features include thermal shutdown as well as open and short LED detection.        2x2 Channel LED driver Output current only limited by external FET Build in shunt regulator Absolute current accuracy +/- 1% Channel to channel accuracy +/- 1% Normal Mode  Linear current control with external voltage  Digital PWM control with PWM input  Build in PWM-generator with analog duty cycle control Current Boost Mode  Linear current control with external voltage  Digital PWM control with 2 PWM inputs       Open LED detection and auto-turnoff Short LED detection and auto-turnoff Temperature shutdown 2x automatic supply regulation feedback Package QFN 32pin 5x5mm, 0.5mm pitch Package TQFP 32pin 7x7mm, 0.8mm pitch Applications  Commercial, industrial and retail lighting  Streetlights  Large panel LED backlighting 1 Block Diagram Vsupply VDD xFAULT FB12 FB34 V2_5 S1 G1 D1 S2 G2 D2 S3 G3 D3 S4 G4 D4 SMPS feedback Rosc Cosc Fault detectors Oscillator AS3696 Reference Vshort Vfb Vref Vset2 Vset1 Vduty CB_PWM12 CB_PWM34 CB_MODE xPD PWM SEL PWM control EPAD VSS Sel_PPTrim www.austriamicrosystems.com Rev 2.1 / 2012-11-29 1 - 14 Free Da...