LT1939IDD#PBF

Product Overview

Category

LT1939IDD#PBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for power management applications.

Characteristics

• Integrated circuit
• Power management functionality
• Small form factor
• High efficiency
• Wide input voltage range

Package

LT1939IDD#PBF is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of LT1939IDD#PBF lies in its ability to efficiently manage power in electronic devices, ensuring stable and reliable operation.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 36V
• Output Voltage Range: 0.8V to 24V
• Maximum Output Current: 3A
• Switching Frequency: 500kHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin
4. EN: Enable pin
5. SW: Switch node pin
6. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows for versatile application scenarios.
• High efficiency ensures minimal power loss during operation.
• Adjustable output voltage provides flexibility for different device requirements.
• Enable pin allows for easy control of the power management function.
• Switch node pin facilitates efficient switching between input and output.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption.
• Wide input voltage range enables compatibility with various power sources.
• Compact size allows for integration into space-constrained designs.
• Adjustable output voltage provides versatility for different applications.

Disadvantages

• Limited maximum output current may not be suitable for high-power devices.
• Higher switching frequency may introduce electromagnetic interference in sensitive systems.

Working Principles

LT1939IDD#PBF operates based on a switching regulator topology. It utilizes high-frequency switching to convert the input voltage to the desired output voltage with minimal power loss. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output.

Detailed Application Field Plans

LT1939IDD#PBF finds applications in various electronic devices, including but not limited to: - Portable electronic devices - Industrial equipment - Automotive electronics - Communication systems - Power supplies

Detailed and Complete Alternative Models

1. LT8610ABEMSE#PBF: Similar power management IC with higher maximum output current (5A).
2. LT1763CS8-3.3#PBF: Low dropout voltage regulator alternative for specific applications.
3. LT3080EST#PBF: Adjustable linear regulator alternative with high output current capability.

These alternative models offer similar functionality and can be considered based on specific requirements and constraints.

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