LT3491EDC#TRMPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, compact size, adjustable output voltage
• Package: DFN-10
• Essence: Step-up DC/DC converter
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 4V to 30V
• Switching Frequency: 1MHz
• Maximum Output Current: 1A
• Efficiency: Up to 92%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3491EDC#TRMPBF has a total of 10 pins arranged as follows:

1. VIN: Input voltage pin
2. SW: Switching node connection for the internal power switch
3. GND: Ground reference pin
4. FB: Feedback pin for adjusting the output voltage
5. VOUT: Output voltage pin
6. SS: Soft-start capacitor connection
7. EN: Enable pin for turning the device on/off
8. PGND: Power ground reference pin
9. LX: Inductor connection pin
10. NC: No connect pin

Functional Features

• Wide input voltage range allows flexibility in power supply selection
• High switching frequency enables the use of smaller external components
• Adjustable output voltage provides versatility in various applications
• Internal power switch minimizes external component count
• Soft-start feature prevents excessive inrush current during startup
• Enable pin allows for easy control of device operation

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation - Compact size saves board space - Adjustable output voltage accommodates different requirements - Simplified circuit design due to internal power switch

Disadvantages: - Limited maximum output current of 1A - Requires careful consideration of input and output voltage ranges

Working Principles

The LT3491EDC#TRMPBF is a step-up DC/DC converter that converts a lower input voltage to a higher output voltage. It utilizes a high-frequency switching technique to efficiently transfer energy from the input to the output. The internal power switch controls the flow of current through an inductor, which stores energy during the on-time and releases it to the output during the off-time. The feedback pin (FB) allows for precise adjustment of the output voltage by regulating the duty cycle of the internal switch.

Detailed Application Field Plans

The LT3491EDC#TRMPBF is commonly used in various applications, including:

1. Battery-powered devices: Provides efficient voltage boost for portable electronics.
2. LED lighting: Enables driving multiple LEDs in series with a constant current source.
3. Automotive systems: Powers sensors, displays, and other low-power components.
4. Industrial control: Suitable for powering microcontrollers, sensors, and actuators.
5. Telecom equipment: Used in voltage conversion for communication devices.

Detailed and Complete Alternative Models

1. LT3491EDC#PBF: Similar specifications but available in a different package (DFN-10).
2. LT3491EMS#PBF: Smaller package (MSOP-10) with similar functionality.
3. LT3491HEDC#PBF: Higher maximum output current (2A) with extended temperature range.

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