
Linear Technology
DESCRIPTION
The LT®3596 is a 60V step-down LED Driver. It achieves 10,000:1 digital PWM dimming at 100Hz with fast NPN current sources driving up to 10 LEDs in each channel. 100:1 LED dimming can also be done with analog control of the CTRL1-3 pin.
FEATUREs
■ 300mA Buck Regulator, Drives Up to 10 LEDs per
Channel 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
■ ±1.5% Accurate LED Current Matching
■ External Resistors Set LED Current for Each Channel
■ Requires No External Compensation
■ Programmable Switching Frequency (200kHz to 1MHz)
■ Synchronizable to External Clock
■ Open, Short LED Detection and Reporting
■ Programmable LED Thermal Derating and Reporting
■ Programmable Temperature Protection
■ 5mm × 8mm Thermally Enhanced QFN Package with
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