LT3596

RECOMMENDED FOR NEW DESIGNS

60V Step-Down LED Driver

Part Models: 4
1ku List Price: Starting From $4.37

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Overview

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 V_OUT 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

The LT3596 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.

The step-down switching frequency is programmable between 200kHz and 1MHz and is synchronizable to an external clock. The LT3596 also provides maximum LED brightness while adhering to manufacturers’ specifications for thermal derating. The derate temperature is programmed by placing a negative temperature coefficient (NTC) resistor on the master control pin.

The LT3596 adaptively controls V_OUT in order to achieve optimal efficiency. Other features include: 1.5% LED current matching between channels, open LED reporting, shorted LED pin protection and reporting, programmable LED current and programmable temperature protection.

Applications

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

Part Models: 4
1ku List Price: Starting From $4.37

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3596EUHG#PBF	52-Lead QFN (5mm x 8mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3596EUHG#TRPBF	52-Lead QFN (5mm x 8mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3596IUHG#PBF	52-Lead QFN (5mm x 8mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3596IUHG#TRPBF	52-Lead QFN (5mm x 8mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 1
LT4363	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper with Current Limit
Pulse-Width Modulation (PWM) & Pulse Generators 1
LTC6992		TimerBlox: Voltage-Controlled Pulse Width Modulator (PWM)
Temperature Sensors 1
LTC2997	PRODUCTION	Remote/Internal Temperature Sensor

Tools & Simulations

LTspice 1

LT3596 Demo Circuit - 60V Step-Down 3-Channel LED Driver (48V to 3 Strings of 9 LEDs@100mA)

Models for the following parts are available in LTspice:

LT3596

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.