DESCRIPTION
The LT®3597 is a 60V triple step-down LED driver capable of achieving 10,000:1 digital PWM dimming at 100Hz with fast NPN current sources driving up to 10 LEDs in each channel. LED dimming can also be achieved via analog control of the CTRL1-3 pin.

FEATUREs
■ Three 100mA Buck Regulators, Each Drives Up to
   10 LEDs with Fast NPN Current Sources
■ Fast Current Sources for <1µs Pulse Widths
   (10,000:1 True Color PWM™ Dimming at 100Hz)
■ LEDs Disconnected in Shutdown
■ Adaptive VOUT for Increased Efficiency
■ 6V to 60V Input Voltage Range
■ ±2% LED Current Matching
■ External Resistor Sets LED Current for Each Channel
■ Internal Compensation and Soft-Start
■ Programmable Switching Frequency (200kHz to 1MHz)
■ Synchronizable to External Clock
■ Open LED Detection and Reporting
■ Shorted LED Pin Protection and Reporting
■ Programmable LED Thermal Derating
■ Programmable Temperature Protection
■ 5mm × 8mm Thermally Enhanced QFN Package
   with a 0.6mm High Voltage Pin Spacing

APPLICATIONS
■ LED Billboards and Signboards
■ Mono, Multi, Full-Color LED Displays
■ Large Screen Display LED Backlighting
■ Automotive, Industrial, and Medical Displays