LT3790EFE

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LT3790EFE

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  • Mfr. Partie #LT3790EFE
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Spécifications

Part Status Obsolete
Output Type Transistor Driver
Function Step-Up/Step-Down
Output Configuration Positive
Topology Buck-Boost
Number of Outputs 2
Output Phases 2
Voltage - Supply (Vcc/Vdd) 4.7V ~ 60V
Frequency - Switching 200kHz ~ 700kHz
Synchronous Rectifier Yes
Clock Sync Yes
Control Features Enable, Frequency Control, Soft Start
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package 38-TSSOP-EP
Base Product Number LT3790

Vue d'ensemble

Description

The LT3790EFE is a high-performance LED driver from Analog Devices, specifically designed for driving high-brightness LEDs with high efficiency. It features a wide input voltage range of 4.5V to 60V, making it suitable for various applications, including automotive, industrial, and architectural lighting.
Key features include a constant current output with adjustable current levels, integrated PWM dimming, and an internal switch, allowing for simplified design and reduced component count. The LT3790EFE also supports both analog and digital dimming methods, providing flexibility for different lighting applications.
The device includes protections such as over-voltage, under-voltage, and thermal shutdown, ensuring reliability and longevity. Its compact package and excellent thermal performance make it ideal for space-constrained designs.
Overall, the LT3790EFE is a versatile and efficient solution for driving LED arrays in a variety of settings, enabling designers to achieve high performance while minimizing power consumption and heat generation.

Features

The LT3790EFE is a high-performance, synchronous step-down DC/DC converter designed for driving LEDs. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power sources.
2. High Efficiency: Up to 95% efficiency, minimizing heat generation and improving reliability.
3. Integrated Switching MOSFETs: Reduces component count and PCB space requirements.
4. Constant Current Control: Ensures precise LED current regulation, enhancing brightness consistency.
5. Programmable Output Current: Allows customization of LED drive current through external resistors.
6. Wide Frequency Operation: Switching frequency can be adjusted from 200kHz to 1MHz, optimizing for size or efficiency.
7. Thermal Protection: Includes thermal shutdown and current limit features for safe operation.
8. Soft-Start Capability: Reduces inrush current during startup, protecting components.
9. Flexible Topology: Can be used in various configurations, including boost, buck, and buck-boost applications.
These features make the LT3790EFE suitable for a wide range of LED driving applications.

Package

The LT3790EFE is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) format, which is designed for surface mounting on circuit boards. This compact package type helps optimize space in electronic designs.

Pinout

The LT3790EFE is a high-voltage, monolithic LED driver designed for driving LED arrays with a constant current. It features a 16-pin package.
### Pin Count:
- 16 Pins
### Key Functions:
1. VIN: Input voltage supply for the IC.
2. SW: Switch node, connected to the inductor in boost or buck-boost configurations.
3. GND: Ground reference for the circuit.
4. CSN/ CSP: Current sense inputs for monitoring LED current.
5. ILIM: Input for setting the switch current limit.
6. COMP: Compensation node for stability in feedback loop.
7. Rset: Resistor input for setting the output current.
8. EN: Enable pin to turn the IC on/off.
9. FREQ: Frequency setting pin for adjusting the switching frequency.
10. VOUT: Output voltage for driving LEDs.
These pins facilitate various functions such as power supply input, current sensing, frequency adjustment, and output control, making the LT3790EFE versatile for LED driving applications.

Manufacturer

The LT3790EFE is manufactured by Analog Devices, Inc., a prominent American company that designs and manufactures a wide range of semiconductor products. Analog Devices specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves various industries, including automotive, communications, healthcare, industrial automation, and consumer electronics. Founded in 1965, Analog Devices is recognized for its innovation in signal processing technologies and provides solutions that enable high precision and performance in electronic systems.

Application

The LT3790EFE is a high-performance LED driver primarily used in applications such as architectural lighting, automotive lighting, and general illumination. It supports constant current control for driving LEDs, enabling various configurations like boost, buck, and buck-boost topologies. Additionally, it is suitable for displays and other lighting applications requiring high efficiency and precise current regulation.

Equivalent

The LT3790EFE is a high-performance LED driver. Equivalent products include the LM3405, LM3406, and ISL97633 from Texas Instruments and Intersil, respectively. Other alternatives are the MAX16834 and MAX16836 from Maxim Integrated. These alternatives may offer similar functionalities but check specifications for compatibility in your specific application.

Expédition

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Référence des frais d'expédition (DHL/FedEx):

DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.

FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

Paiements

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