LTC3858EGN-1#PBF

Product Overview

Category

The LTC3858EGN-1#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is primarily used in various power management systems, including but not limited to voltage regulators, power converters, and battery charging circuits.

Characteristics

• High efficiency: The LTC3858EGN-1#PBF offers high conversion efficiency, minimizing power losses during operation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Fast transient response: This IC provides quick and accurate responses to sudden changes in load conditions.
• Protection features: It incorporates built-in protection mechanisms such as overvoltage, overcurrent, and thermal shutdown, ensuring safe operation.

Package

The LTC3858EGN-1#PBF comes in a compact and industry-standard 16-pin SSOP (Shrink Small Outline Package) package. This package offers good thermal performance and ease of integration into circuit boards.

Essence

The essence of the LTC3858EGN-1#PBF lies in its ability to efficiently manage power in various electronic systems, enabling stable and reliable operation.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4V to 38V
• Output Voltage Range: 0.6V to 5.5V
• Maximum Output Current: 8A
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. FB: Feedback pin for output voltage regulation
4. SS/TR: Soft-start and tracking control pin
5. SYNC: Synchronization input for external clock
6. VCC: Supply voltage for internal circuitry
7. PGND: Power ground pin
8. SW: Switching node connection for power stage
9. BST: Bootstrap capacitor connection for high-side MOSFET
10. COMP: Compensation pin for loop stability
11. SS/TR: Soft-start and tracking control pin (duplicate)
12. VFB: Feedback voltage output pin
13. RT/CLKOUT: External resistor for frequency setting or clock output
14. CLKIN: Clock input for synchronization
15. SS/TR: Soft-start and tracking control pin (duplicate)
16. EN/UVLO: Enable pin for device operation or undervoltage lockout

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High efficiency conversion minimizes power losses and maximizes energy utilization.
• Fast transient response ensures stable operation during load changes.
• Built-in protection mechanisms safeguard the system from overvoltage, overcurrent, and thermal issues.
• Synchronization capability enables precise timing coordination in multi-phase applications.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and improved energy efficiency.
• Wide input voltage range enhances versatility and compatibility with different power sources.
• Fast transient response ensures stable performance under dynamic load conditions.
• Integrated protection features enhance system reliability and safety.
• Synchronization capability allows for efficient multi-phase operation.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• The 16-pin SSOP package may require additional space on the circuit board compared to smaller packages.

Working Principles

The LTC3858EGN-1#PBF operates as a step-down (buck) switching regulator. It utilizes a high-frequency switching technique to efficiently convert the input voltage to a lower, regulated output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage. Feedback mechanisms continuously monitor the output voltage and adjust the control signals accordingly.

Detailed Application Field Plans

The LTC3858EGN-1#PBF finds applications in various fields, including: - Industrial power supplies - Automotive electronics - Telecommunications equipment - Portable electronic devices - Battery charging systems - Distributed power systems

Detailed and Complete Alternative Models

1. LTC3858EGN#PBF: Similar to LTC3858EGN-1#PBF but without the enable/undervoltage lockout (EN/UVLO) pin.
2. LTC3858IGN-1#PBF: Similar to LTC3858EGN-1#PBF but comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.
3. LTC3858MPGN-1#PBF: Similar to LTC3858EGN-1#PBF but designed for military and aerospace applications, offering enhanced ruggedness and reliability.