LT3757EDD#PBF

Product Overview

Category

The LT3757EDD#PBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for controlling and regulating the power supply in various electronic devices.

Characteristics

• High efficiency: The LT3757EDD#PBF offers high efficiency power conversion, minimizing energy loss.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for different power sources.
• Versatile output voltage: The IC supports adjustable output voltage, allowing flexibility in powering various components.
• Compact package: It comes in a small and compact DFN package, enabling space-saving designs.
• Robustness: The LT3757EDD#PBF is built with robust features to ensure reliable performance even in demanding environments.

Package and Quantity

The LT3757EDD#PBF is available in a DFN package. Each package contains one IC.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage Range: Adjustable from 0.8V to 36V
• Maximum Output Current: 4A
• Switching Frequency: Up to 500kHz
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3757EDD#PBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. SW: Switching pin
4. FB: Feedback pin
5. VOUT: Output voltage pin
6. SYNC: Synchronization pin
7. RT/CLK: Timing resistor/clock synchronization pin
8. SS/TR: Soft-start/timing capacitor pin

Functional Features

1. Wide Input Voltage Range: The LT3757EDD#PBF can handle a wide range of input voltages, making it suitable for various power sources.
2. Adjustable Output Voltage: It supports adjustable output voltage, allowing flexibility in powering different components.
3. High Efficiency: The IC offers high efficiency power conversion, minimizing energy loss and maximizing battery life.
4. Protection Features: It includes built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown, ensuring safe operation.
5. Synchronization Capability: The SYNC pin allows synchronization with an external clock signal, enabling precise timing control.

Advantages

• High efficiency power conversion
• Wide input voltage range
• Adjustable output voltage
• Compact package size
• Robust protection features
• Synchronization capability for precise timing control

Disadvantages

• Limited maximum output current (4A)
• Requires additional external components for certain applications

Working Principles

The LT3757EDD#PBF operates based on a switching regulator topology. It utilizes a high-frequency switching transistor to convert the input voltage to the desired output voltage. The feedback mechanism ensures that the output voltage remains stable and within the specified range. The IC incorporates various control circuits to regulate the power supply efficiently.

Application Field Plans

The LT3757EDD#PBF finds applications in a wide range of electronic devices, including but not limited to: - Power adapters - Battery chargers - LED lighting systems - Industrial equipment - Automotive electronics

Alternative Models

1. LT3757EDD#TRPBF: Similar to LT3757EDD#PBF, but available in tape and reel packaging.
2. LT3757EMSE#PBF: A similar IC with a different package (MSOP) and lower maximum output current (2A).
3. LT3757HDD#PBF: Higher maximum output current (8A) version of LT3757EDD#PBF.

These alternative models provide options based on specific requirements and design constraints.

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