ZXLD1371

A Product Line of Diodes Incorporated ZXLD1371 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER Description Pin Assignments The ZXLD1371 is an LED driver controller IC for driving external MOSFETs to drive high current LEDs. It is a multitopology controller enabling it to efficiently control the current through series connected LEDs. The multi-topology enables it to operate in buck, boost and buck-boost configurations. The 60V capability coupled with its multi-topology capability enables it to be used in a wide range of applications and drive in excess of 15 LEDs in series. The ZXLD1371 is a modified hysteretic controller using a patent pending control scheme providing high output current accuracy in all three modes of operation. High accuracy dimming is achieved through DC control and high frequency PWM control. The ZXLD1371 uses two pins for fault diagnosis. A flag output highlights a fault, while the multi-level status pin gives further information on the exact fault. ADJ REF TADJ SHP STATUS SGND PGND N/C 1 2 3 4 5 6 7 8 TSSOP-16EP Features 0.5% typical output current accuracy 5 to 60V operating voltage range LED driver supports Buck, Boost and Buck-boost configurations Wide dynamic range dimming o 10:1 DC dimming o 1000:1 dimming range at 500Hz Up to 1MHz switching High temperature control of LED current using TADJ Available in Automotive Grade with AEC-Q100 and TS16949 certification Available in “Green” Molding Compound (No Br, Sb) ...