LT3597
LT3597
RECOMMENDED FOR NEW DESIGNS60V Triple Step-Down LED Driver
- Part Models
- 4
- 1ku List Price
- Starting From $5.43
Viewing:
Overview
- 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
The LT3597 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.
The step-down switching frequency is programmed between 200kHz and 1MHz. The frequency is also synchronizable to an external clock. The LT3597 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 LT3597 adaptively controls VOUT in order to achieve optimal efficiency. Other features include: 2% LED current matching between channels, open LED reporting, shorted LED protection, 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
Documentation
Data Sheet 1
User Guide 1
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 |
|---|---|---|---|
| LT3597EUHG#PBF | 52-Lead QFN (5mm x 8mm x 0.75mm w/ EP) | ||
| LT3597EUHG#TRPBF | 52-Lead QFN (5mm x 8mm x 0.75mm w/ EP) | ||
| LT3597IUHG#PBF | 52-Lead QFN (5mm x 8mm x 0.75mm w/ EP) | ||
| LT3597IUHG#TRPBF | 52-Lead QFN (5mm x 8mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LT2940 | PRODUCTION | Power and Current Monitor |
| Hot Swap 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 | ||
| LTC2995 | PRODUCTION | Temperature Sensor and Dual Voltage Monitor with Alert Outputs |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3597
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.
