LT8391AHFE#PBF

Product Overview

Category

LT8391AHFE#PBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in power management applications.

Characteristics

• High efficiency
• Wide input voltage range
• Adjustable output voltage
• Current mode control
• Synchronous rectification
• Programmable soft-start
• Overvoltage protection
• Undervoltage lockout

Package

LT8391AHFE#PBF is available in a compact and durable 20-pin TSSOP package.

Essence

The essence of LT8391AHFE#PBF lies in its ability to efficiently regulate power in various applications, ensuring stable and reliable performance.

Packaging/Quantity

This product is typically packaged in reels containing 250 units.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.8V to 55V
• Switching Frequency: Up to 2MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for stability control
5. SS: Soft-start pin for adjustable startup time
6. VCC: Supply voltage pin for internal circuitry
7. SYNC: Synchronization pin for external clock input
8. RT: Timing resistor pin for switching frequency adjustment
9. SW: Switch node pin for power transfer
10. PGND: Power ground pin
11. BST: Bootstrap capacitor pin for high-side gate driver
12. LX: Inductor connection pin
13. EN/UVLO: Enable/Undervoltage lockout pin
14. VOUT: Output voltage pin

Functional Features

• High efficiency power conversion
• Precise output voltage regulation
• Fast transient response
• Protection against overvoltage and undervoltage conditions
• Adjustable soft-start for controlled startup
• Synchronous rectification for improved efficiency
• Wide input voltage range for versatile applications

Advantages and Disadvantages

Advantages

• High efficiency operation
• Wide input voltage range
• Programmable soft-start feature
• Comprehensive protection mechanisms
• Compact package size

Disadvantages

• Limited maximum duty cycle
• Requires external components for operation

Working Principles

LT8391AHFE#PBF operates on the principle of current mode control, where the inductor current is sensed and regulated to achieve the desired output voltage. It utilizes a synchronous rectification scheme to minimize power losses and improve overall efficiency. The IC incorporates various protection features such as overvoltage protection and undervoltage lockout to ensure safe operation.

Detailed Application Field Plans

LT8391AHFE#PBF finds extensive application in the following fields:

1. Industrial power supplies
2. Automotive electronics
3. LED lighting systems
4. Battery charging circuits
5. Distributed power architectures
6. Telecom infrastructure

Detailed and Complete Alternative Models

1. LT8390AHFE#PBF
2. LT8392AHFE#PBF
3. LT8393AHFE#PBF
4. LT8394AHFE#PBF
5. LT8395AHFE#PBF

These alternative models offer similar functionality and can be considered as alternatives to LT8391AHFE#PBF based on specific requirements.

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