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LT3790EFE
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HerstellerAnalog Devices Inc.
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Herstellerteil #LT3790EFE
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Auf Lager5677
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
Originalproduktgarantie
Spezifikationen
| Attribut | Wert |
| 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 |
Übersicht
Description
Key features include a built-in high-side current sense amplifier, adjustable switching frequency, and a robust thermal shutdown mechanism to protect against overheating. It also provides dimming capabilities through PWM control, enabling precise brightness adjustment. The LT3790EFE is packaged in a compact form factor, facilitating easy integration into space-constrained designs.
Overall, the LT3790EFE is an efficient and flexible solution for driving LED applications, ensuring high performance and reliability.
Equivalent
Features
1. Wide Input Voltage Range: Operates from 4.5V to 60V, suitable for a range of power sources.
2. Boost, Buck, and Buck-Boost Operation: Versatile for different LED configurations.
3. High Efficiency: Achieves efficiencies up to 95%, minimizing heat and improving performance.
4. Constant Current Control: Ensures uniform LED brightness and protects LEDs from overcurrent.
5. Adjustable Switching Frequency: Ranges from 100 kHz to 1 MHz, allowing for optimization of component size and efficiency.
6. Integrated Soft-Start: Reduces inrush current and ensures smooth start-up.
7. Thermal Protection: Built-in thermal shutdown prevents damage from overheating.
8. Analog/Digital Dimming: Supports both methods for flexible brightness control.
9. Overvoltage Protection: Safeguards the circuit under fault conditions.
Overall, the LT3790EFE is ideal for LED lighting, automotive applications, and other power management tasks where efficiency and reliability are crucial.
Pinout
Key functions of the pins include:
1. SW (Switch): Connects to the external switch for the boost converter.
2. VIN: Input voltage supply.
3. GND: Ground reference.
4. LSN, LSP: Sense pins for current regulation.
5. Rset: Sets the output current.
6. VC: Compensation pin for loop stability.
7. COMP: Compensation capacitor connection.
8. CSN, CSP: Current sense inputs for dimming control.
9. LT: Connects to a timing capacitor for LED dimming.
10. PGND: Power ground for high current paths.
11. FREQ: Frequency setting pin.
12. ISENSE: Current sensing for feedback control.
13. EN: Enable pin to turn on/off the device.
14. SS: Soft-start pin to control the startup time.
This device is used in applications requiring efficient LED drive solutions.
Manufacturer
Analog Devices is particularly known for its innovations in high-performance analog and mixed-signal technology, which are critical for processing real-world signals such as sound, temperature, pressure, and light. The LT3790EFE itself is a high-efficiency, step-up (boost) DC-DC converter designed for applications requiring high output voltage from a low input voltage source, making it suitable for use in LED drivers, battery-powered devices, and other power management applications.
As a leader in its field, Analog Devices focuses on developing solutions that enhance signal processing capabilities, enabling customers to improve performance in their electronic systems.