LT3795
LT3795
PRODUCTION110V LED Controller with Spread Spectrum Frequency Modulation
- Part Models
- 12
- 1ku List Price
- Starting From $5.23
Viewing:
Overview
- 3000:1 True Color PWM™ Dimming
- Wide Input Voltage Range: 4.5V to 110V
- Input and Output Current Reporting
- PMOS Switch Driver for PWM and Output Disconnect
- Internal Spread Spectrum Frequency Modulation
- ±2% Constant Voltage Regulation
- ±3% Constant Current Regulation: 0V ≤ VOUT ≤ 110V
- Programmable Input Current limit
- CTRL Inputs Linearly Adjust LED Current
- Adjustable Frequency: 100kHz to 1MHz
- Programmable Open LED Protection with OPENLED Flag
- Short-Circuit Protection and SHORTLED Flag
- Programmable Undervoltage Lockout with Hysteresis
- Soft-Start with Programmable Fault Restart Timer
- C/10 Detection for Battery Charging
- Available in 28-Lead TSSOP Package
- AEC-Q100 Qualified for Automotive Applications
The LT3795 is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Spread spectrum frequency modulation (SSFM) can be activated for improved electromagnetic compatibility (EMC) performance. The ground referred voltage FB pin serves as the input for several LED protection features, and also allows the converter to operate as a constant-voltage source. The maximum output current is set by an external resistor, and the output current amplifier has a rail-to-rail common mode range. The LT3795 also includes a separate input current sensing amplifier that is used to limit input current. The TG pin inverts and level shifts the PWM signal to drive the gate of the external PMOS. The PWM input provides LED dimming ratios of up to 3000:1, and the CTRL inputs provide additional analog dimming capability.
APPLICATIONS
- High Power LED, High Voltage LED
- Battery Chargers
- Accurate Current Limited Voltage Regulators
Documentation
Data Sheet 1
User Guide 1
Technical Articles 3
Video 2
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 |
|---|---|---|---|
| LT3795EFE#PBF | 28-Lead TSSOP w/ EP | ||
| LT3795EFE#TRPBF | 28-Lead TSSOP w/ EP | ||
| LT3795EFE#WPBF | 28-Lead TSSOP w/ EP | ||
| LT3795EFE#WTRPBF | 28-Lead TSSOP w/ EP | ||
| LT3795HFE#PBF | 28-Lead TSSOP w/ EP | ||
| LT3795HFE#TRPBF | 28-Lead TSSOP w/ EP | ||
| LT3795HFE#WPBF | 28-Lead TSSOP w/ EP | ||
| LT3795HFE#WTRPBF | 28-Lead TSSOP w/ EP | ||
| LT3795IFE#PBF | 28-Lead TSSOP w/ EP | ||
| LT3795IFE#TRPBF | 28-Lead TSSOP w/ EP | ||
| LT3795IFE#WPBF | 28-Lead TSSOP w/ EP | ||
| LT3795IFE#WTRPBF | 28-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LT3795EFE#PBF | PRODUCTION | |
| LT3795EFE#TRPBF | PRODUCTION | |
| LT3795EFE#WPBF | PRODUCTION | |
| LT3795EFE#WTRPBF | PRODUCTION | |
| LT3795HFE#PBF | PRODUCTION | |
| LT3795HFE#TRPBF | PRODUCTION | |
| LT3795HFE#WPBF | PRODUCTION | |
| LT3795HFE#WTRPBF | PRODUCTION | |
| LT3795IFE#PBF | PRODUCTION | |
| LT3795IFE#TRPBF | PRODUCTION | |
| LT3795IFE#WPBF | PRODUCTION | |
| LT3795IFE#WTRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT3795EFE#PBF | PRODUCTION | |
| LT3795EFE#TRPBF | PRODUCTION | |
| LT3795EFE#WPBF | PRODUCTION | |
| LT3795EFE#WTRPBF | PRODUCTION | |
| LT3795HFE#PBF | PRODUCTION | |
| LT3795HFE#TRPBF | PRODUCTION | |
| LT3795HFE#WPBF | PRODUCTION | |
| LT3795HFE#WTRPBF | PRODUCTION | |
| LT3795IFE#PBF | PRODUCTION | |
| LT3795IFE#TRPBF | PRODUCTION | |
| LT3795IFE#WPBF | PRODUCTION | |
| LT3795IFE#WTRPBF | PRODUCTION | |
|
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive) |
||
| LT3795EFE#WPBF | PRODUCTION | |
| LT3795EFE#WTRPBF | PRODUCTION | |
| LT3795HFE#WPBF | PRODUCTION | |
| LT3795HFE#WTRPBF | PRODUCTION | |
| LT3795IFE#PBF | PRODUCTION | |
| LT3795IFE#TRPBF | PRODUCTION | |
| LT3795IFE#WPBF | PRODUCTION | |
| LT3795IFE#WTRPBF | PRODUCTION | |
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 |
|---|---|---|
| Ideal Diodes and PowerPath Controllers 1 | ||
|
LT4320 LT4320-1 |
Ideal Diode Bridge Controller | |
| LED Drivers 1 | ||
|
LT3761 LT3761-1 |
60VIN LED Controller with Internal PWM Generator | |
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4366 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3795
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.
Evaluation Kits
LT3795 Demo Board | 110V LED Controller; 8V to 60Vin, 87Vout @ 0.4A, Spread Spectrum Frequency Modulation