LT3477IUF#PBF

Product Overview

The LT3477IUF#PBF is a high-efficiency, low-noise, 2.3MHz synchronous step-up DC/DC converter with an integrated output disconnect. This device is designed for use in various applications where a regulated output voltage must be generated from an input voltage higher than the output voltage. The LT3477IUF#PBF offers characteristics such as high efficiency, compact package, and versatile application possibilities.

Basic Information

• Category: Power Management IC
• Use: Step-up DC/DC Converter
• Characteristics: High Efficiency, Low Noise, Integrated Output Disconnect
• Package: 4mm × 3mm DFN-14
• Essence: Efficient Voltage Boosting
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.3V to 16V
• Output Voltage Range: Up to 34V
• Switching Frequency: 2.3MHz
• Maximum Output Current: 500mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. SW: Switch Node
2. VIN: Input Voltage
3. GND: Ground
4. FB: Feedback Voltage
5. SS/TR: Soft-Start/Tracking
6. RT: Oscillator Frequency Set
7. VOUT: Output Voltage
8. PG: Power Good Indicator
9. EN: Enable Pin
10. BST: Bootstrap Capacitor Connection
11. LX: Inductor Connection
12. AGND: Analog Ground
13. AGND: Analog Ground
14. AGND: Analog Ground

Functional Features

• High Efficiency Synchronous Operation
• Integrated Output Disconnect
• Low Quiescent Current
• Soft-Start/Tracking Function
• Power Good Indicator
• Wide Input Voltage Range

Advantages and Disadvantages

Advantages

• High Efficiency
• Compact Package
• Integrated Output Disconnect
• Wide Input Voltage Range
• Low Quiescent Current

Disadvantages

• Limited Maximum Output Current (500mA)

Working Principles

The LT3477IUF#PBF operates by converting a lower input voltage to a higher output voltage using a synchronous step-up topology. The integrated output disconnect feature ensures that the output is disconnected from the input during shutdown, preventing leakage current and improving efficiency. The device also incorporates a soft-start/tracking function to minimize inrush current during startup.

Detailed Application Field Plans

The LT3477IUF#PBF is suitable for a wide range of applications including: - Battery-Powered Devices - Portable Instruments - LED Backlighting - Photoflash Capacitor Chargers - Positive-to-Negative Converters

Detailed and Complete Alternative Models

• LT3477EUHF#PBF
• LT3477IUHF#PBF
• LT3477EUF#PBF
• LT3477IUF#TRPBF

In conclusion, the LT3477IUF#PBF is a versatile and efficient step-up DC/DC converter suitable for various applications requiring regulated output voltage from a higher input voltage. Its compact package, high efficiency, and integrated features make it a compelling choice for power management solutions.

Word Count: 446