LT3592
LT3592
PRODUCTION500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming
- Part Models
- 8
- 1ku List Price
- Starting From $2.53
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Overview
- Wide Input Voltage Range Operation from 3.6V to 36V
- Resistor Adjustable 400kHz–2.2MHz Switching Frequency
- Shorted and Open LED Protected
- Internal Switch Current Sense Resistor
- External Resistor Programs LED Current, Pin Selects 10:1 Ratio
- 50mA/500mA LED Current Settings
- Catch Diode Current Sense to Prevent Runaway at High VIN
- Small Thermally Enhanced 10-Lead DFN (2mm × 3mm) and MSOP-10 Packages
The LT3592 is a fixed frequency step-down DC/DC converter designed to operate as a constant-current source. An external sense resistor monitors the output current allowing accurate current regulation, ideal for driving high current LEDs. The output current can be dimmed by a factor of 10 using an external signal for nighttime brake lights.
The high switching frequency offers several advantages by permitting the use of a small inductor and small ceramic capacitors. Small components combined with the LT3592’s 10-pin DFN leadless surface mount package save space and cost versus alternative solutions. The constant switching frequency combined with low-impedance ceramic capacitors result in low, predictable output ripple.
A wide input voltage range of 3.6V to 36V makes the LT3592 useful in a variety of applications. Current mode PWM architecture provides fast transient response and cycle-by-cycle current limiting. Thermal shutdown provides additional protection.
Applications
- Automotive Signal Lighting
- Industrial Lighting
- Constant-Current, Constant Voltage Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Video 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 |
|---|---|---|---|
| LT3592EDDB#TRMPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3592EDDB#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3592EMSE#PBF | 10-Lead MSOP w/ EP | ||
| LT3592EMSE#TRPBF | 10-Lead MSOP w/ EP | ||
| LT3592IDDB#TRMPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3592IDDB#TRPBF | 10-Lead DFN (3mm x 2mm w/ EP) | ||
| LT3592IMSE#PBF | 10-Lead MSOP w/ EP | ||
| LT3592IMSE#TRPBF | 10-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LT3592EDDB#TRMPBF | PRODUCTION | |
| LT3592EDDB#TRPBF | PRODUCTION | |
| LT3592EMSE#PBF | PRODUCTION | |
| LT3592EMSE#TRPBF | PRODUCTION | |
| LT3592IDDB#TRMPBF | PRODUCTION | |
| LT3592IDDB#TRPBF | PRODUCTION | |
| LT3592IMSE#PBF | PRODUCTION | |
| LT3592IMSE#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LT3592EMSE#PBF | PRODUCTION | |
| LT3592EMSE#TRPBF | PRODUCTION | |
|
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT3592EMSE#PBF | PRODUCTION | |
| LT3592EMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3592EMSE#PBF | PRODUCTION | |
| LT3592EMSE#TRPBF | PRODUCTION | |
| LT3592IMSE#PBF | PRODUCTION | |
| LT3592IMSE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT3592IMSE#PBF | PRODUCTION | |
| LT3592IMSE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LT3592
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