LT8390AEFE#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Synchronous rectification - Programmable soft-start - Overcurrent protection - Thermal shutdown

Package: 28-Lead TSSOP

Essence: The LT8390AEFE#PBF is a high-performance power management IC designed for various applications that require efficient power conversion.

Packaging/Quantity: The LT8390AEFE#PBF is available in a 28-Lead Thin Shrink Small Outline Package (TSSOP). It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 2MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT8390AEFE#PBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. SYNC/MODE: Synchronization and mode selection pin
5. VCC: Supply voltage pin for internal circuitry
6. SS/TR: Soft-start and tracking pin
7. PGND: Power ground pin
8. SW: Switch node pin for power conversion
9. BST: Boost capacitor connection pin
10. COMP: Compensation pin for stability control
11. RT: Timing resistor pin for switching frequency adjustment
12. CT: Timing capacitor pin for switching frequency adjustment
13. VFB: Feedback voltage output pin
14. ITH: Current sense threshold pin
15. SS/TR: Soft-start and tracking pin
16. VCC: Supply voltage pin for internal circuitry
17. PGND: Power ground pin
18. SW: Switch node pin for power conversion
19. BST: Boost capacitor connection pin
20. COMP: Compensation pin for stability control
21. RT: Timing resistor pin for switching frequency adjustment
22. CT: Timing capacitor pin for switching frequency adjustment
23. VFB: Feedback voltage output pin
24. ITH: Current sense threshold pin
25. VIN: Input voltage pin
26. GND: Ground pin
27. FB: Feedback pin for output voltage regulation
28. SYNC/MODE: Synchronization and mode selection pin

Functional Features

• Wide input voltage range allows operation in various power supply systems.
• Adjustable output voltage provides flexibility for different load requirements.
• Synchronous rectification improves efficiency and reduces power loss.
• Programmable soft-start feature prevents excessive inrush current during startup.
• Overcurrent protection safeguards the IC and connected components from damage.
• Thermal shutdown prevents overheating and ensures safe operation.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Wide input voltage range enables versatile applications. - Adjustable output voltage accommodates different load requirements. - Synchronous rectification improves overall power conversion efficiency. - Programmable soft-start feature prevents excessive inrush current.

Disadvantages: - Limited maximum switching frequency compared to some other ICs in the market. - Higher cost compared to non-programmable power management ICs.

Working Principles

The LT8390AEFE#PBF operates as a step-down (buck) converter, converting a higher input voltage to a lower output voltage. It utilizes a synchronous rectification technique to minimize power losses. The feedback loop regulates the output voltage based on the reference voltage and the feedback voltage. The soft-start feature gradually increases the output voltage during startup to prevent excessive inrush current. Overcurrent protection and thermal shutdown mechanisms ensure safe operation under abnormal conditions.

Detailed Application Field Plans

The LT8390AEFE#PBF is suitable for a wide range of applications, including but not limited to: - Industrial power supplies - Automotive electronics - Telecommunications equipment - Distributed power systems - Battery-powered devices - LED lighting systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LT8390AEFE#PBF are: - LT8391AEFE#PBF - LT8392AEFE#PBF - LT8393AEFE#PBF - LT8394AEFE#PBF - LT8395AEFE#PBF

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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