LT3579EFE-1

Product Overview

Category

The LT3579EFE-1 belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This IC is primarily used for power management applications, providing efficient and reliable control over power supply systems.

Characteristics

• High efficiency: The LT3579EFE-1 offers high efficiency power conversion, minimizing energy losses.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for various applications.
• Adjustable output voltage: The output voltage can be easily adjusted to meet specific requirements.
• Compact package: The LT3579EFE-1 comes in a compact package, allowing for space-saving designs.
• Low quiescent current: It has low quiescent current consumption, reducing power wastage during standby or idle modes.

Package and Quantity

The LT3579EFE-1 is available in a small form factor package, such as an exposed pad TSSOP (Thin Shrink Small Outline Package). It is typically sold in reels containing a specified quantity, usually 250 or 300 units per reel.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage Range: 0.8V to 36V
• Switching Frequency: Up to 2MHz
• Maximum Output Current: 3A
• Quiescent Current: 70µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3579EFE-1 has a total of 20 pins. Here is the detailed pin configuration:

1. VIN: Input voltage pin
2. SW: Switch node connection for the internal power switch
3. GND: Ground reference pin
4. FB: Feedback pin for output voltage regulation
5. VCC: Supply voltage for internal control circuitry
6. SS/TR: Soft-start and tracking pin
7. SYNC/SS: Synchronization and soft-start pin
8. RT/CLKOUT: External resistor connection for setting switching frequency or CLKOUT function
9. CLKIN: Clock input pin for synchronization
10. AGND: Analog ground reference pin
11. PGND: Power ground reference pin
12. LX: Inductor connection pin
13. BST: Boost capacitor connection pin
14. SW: Switch node connection for the internal power switch
15. GND: Ground reference pin
16. FB: Feedback pin for output voltage regulation
17. VCC: Supply voltage for internal control circuitry
18. SS/TR: Soft-start and tracking pin
19. SYNC/SS: Synchronization and soft-start pin
20. RT/CLKOUT: External resistor connection for setting switching frequency or CLKOUT function

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency conversion minimizes power losses.
• Adjustable output voltage provides flexibility.
• Integrated protection features like overvoltage and overcurrent protection enhance system reliability.
• Soft-start and tracking functionality ensure smooth startup and operation.
• Synchronization capability enables multiple ICs to work together.

Advantages and Disadvantages

Advantages

• High efficiency power conversion
• Wide input voltage range
• Adjustable output voltage
• Compact package size
• Low quiescent current consumption

Disadvantages

• Limited maximum output current (3A)
• Requires external components for operation

Working Principles

The LT3579EFE-1 is a step-up DC-DC converter that utilizes a boost topology. It operates by converting a lower input voltage to a higher output voltage using an inductor, a power switch, and a diode. The integrated control circuitry ensures efficient power transfer and regulation.

Detailed Application Field Plans

The LT3579EFE-1 is suitable for various applications, including but not limited to: - Battery-powered devices - Industrial automation systems - Automotive electronics - LED lighting systems - Telecom infrastructure - Portable medical equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LT3579EFE-1 include: - LT3579: Similar specifications and features, but without the exposed pad package option. - LT3579EFE: Same as LT3579EFE-1, but with a different pin configuration. - LT3579EFE-2: Variant with slightly different specifications, such as higher maximum output current.

These alternative models can be considered based on specific application requirements and availability.

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