LT3799EMSE#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High efficiency, dimmable, compact size
• Package: MSOP-16
• Essence: Power management IC for driving LEDs
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Current: Up to 1.5A
• Switching Frequency: 100kHz to 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3799EMSE#PBF package consists of 16 pins. The pin configuration is as follows:

1. VIN: Input voltage
2. GND: Ground
3. VCC: Supply voltage for internal circuitry
4. FB: Feedback pin for regulating output current
5. RT: Timing resistor for setting switching frequency
6. CT: Timing capacitor for setting switching frequency
7. SW: Switch node connection
8. LX: Inductor connection
9. PGND: Power ground
10. EN/UVLO: Enable/Undervoltage lockout control
11. DIM: Dimming control input
12. ADJ: Adjust pin for setting output current
13. SS/TR: Soft-start/Tracking control
14. COMP: Compensation pin for stability
15. VOUT: Output voltage
16. NC: No connection

Functional Features

• Wide input voltage range allows for versatile applications
• High efficiency enables energy-saving operation
• Dimming control capability provides flexibility in lighting design
• Compact size and MSOP-16 package make it suitable for space-constrained designs
• Integrated protection features ensure safe and reliable operation

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption
• Dimming control allows for adjustable brightness levels
• Compact size enables integration into small form factor designs
• Wide input voltage range provides compatibility with various power sources

Disadvantages

• Limited output current may not be suitable for high-power LED applications
• Analog/PWM dimming control may require additional external components

Working Principles

The LT3799EMSE#PBF is a power management IC specifically designed for driving LEDs. It utilizes a boost topology to efficiently convert the input voltage to a higher voltage required by the LEDs. The IC incorporates a feedback loop to regulate the output current, ensuring consistent illumination.

The dimming control feature allows for adjusting the brightness of the LEDs. This can be achieved through either analog or PWM (Pulse Width Modulation) control, providing flexibility in lighting design.

Detailed Application Field Plans

The LT3799EMSE#PBF is widely used in various LED lighting applications, including:

1. Automotive lighting: Provides efficient and dimmable LED driver solutions for automotive headlights, taillights, and interior lighting.
2. Architectural lighting: Enables energy-efficient and controllable LED drivers for architectural accent lighting, façade illumination, and landscape lighting.
3. Industrial lighting: Offers compact and reliable LED driver solutions for industrial high bay lights, streetlights, and warehouse lighting.
4. Display backlighting: Provides efficient and adjustable LED drivers for LCD display backlighting in televisions, monitors, and signage.

Detailed and Complete Alternative Models

1. LT3799AEMSE#PBF: Similar to LT3799EMSE#PBF but with extended temperature range (-40°C to 150°C).
2. LT3799BEMSE#PBF: Similar to LT3799EMSE#PBF but with higher output current capability (up to 3A).
3. LT3799CEMSE#PBF: Similar to LT3799EMSE#PBF but with additional fault protection features.

These alternative models offer variations in temperature range, output current, and additional protection features, providing options to suit different application requirements.

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