LT3755EUD#TRPBF

Introduction

The LT3755EUD#TRPBF is a high voltage, high side current sense DC/DC controller designed for driving an external P-channel power MOSFET. This device operates over an input voltage range of 4.5V to 40V and can produce an output voltage up to 60V. It is commonly used in various applications such as automotive, industrial, and telecommunications.

Basic Information Overview

• Category: High Voltage, High Side Current Sense DC/DC Controller
• Use: Driving an external P-channel power MOSFET
• Characteristics: Wide input voltage range, high output voltage capability
• Package: 16-Lead QFN
• Essence: Efficient power management and control
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage: Up to 60V
• Package Type: 16-Lead QFN
• Operating Temperature Range: -40°C to 125°C
• Switching Frequency: Up to 2MHz
• Current Limit Threshold: Adjustable

Detailed Pin Configuration

1. VIN: Input Voltage
2. SS: Soft-Start
3. RT/CLKOUT: Oscillator Frequency Set/ Clock Output
4. GATE: Gate Drive Output
5. PGND: Power Ground
6. VCC: Supply Voltage
7. FB: Feedback Input
8. COMP: Error Amplifier Output
9. CS+: Positive Current Sense Input
10. CS-: Negative Current Sense Input
11. RT/CLKIN: Oscillator Frequency Set/ Clock Input
12. SYNC/MODE: Synchronization Input/ Mode Select
13. AGND: Analog Ground
14. VREF: Reference Voltage Output
15. VOUT: Output Voltage
16. BST: Bootstrap Voltage

Functional Features

• High Voltage Operation
• Integrated Soft-Start
• Adjustable Switching Frequency
• Synchronization Capability
• Precision Current Sense

Advantages and Disadvantages

Advantages

• Wide Input Voltage Range
• High Output Voltage Capability
• Flexible Frequency Synchronization
• Accurate Current Sensing

Disadvantages

• External Components Required for Full Functionality
• Limited Maximum Switching Frequency

Working Principles

The LT3755EUD#TRPBF operates by regulating the drive to an external P-channel power MOSFET, allowing precise control of the output voltage. The device incorporates a precision current sense amplifier to enable accurate current limiting and monitoring. Additionally, the integrated soft-start feature ensures controlled start-up of the power supply, minimizing inrush current.

Detailed Application Field Plans

The LT3755EUD#TRPBF finds extensive application in: - Automotive LED Lighting Systems - Industrial Power Supplies - Telecommunications Infrastructure

Detailed and Complete Alternative Models

1. LT3755
2. LT3755-1
3. LT3755-2
4. LT3755-3
5. LT3755-4

In summary, the LT3755EUD#TRPBF is a versatile high voltage, high side current sense DC/DC controller with a wide range of applications across various industries. Its advanced features and precise control make it a preferred choice for demanding power management requirements.

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