LT3477EFE#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Step-Up DC/DC Converter
• Package: 16-Lead TSSOP
• Essence: Regulates and converts input voltage to a higher output voltage efficiently
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: Up to 34V
• Switching Frequency: 1.3MHz
• Maximum Output Current: 1A
• Efficiency: Up to 92%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3477EFE#TRPBF has a 16-lead TSSOP package with the following pin configuration:

1. SW: Switch Node Connection
2. GND: Ground
3. FB: Feedback Pin
4. VIN: Input Voltage
5. VCC: Supply Voltage for Internal Circuitry
6. PGND: Power Ground
7. SS/TR: Soft-Start/Tracking Pin
8. EN: Enable Pin
9. NC: No Connection
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. VOUT: Output Voltage

Functional Features

• High efficiency step-up DC/DC converter
• Wide input voltage range allows flexibility in power source selection
• Adjustable output voltage up to 34V
• Internal soft-start reduces inrush current during startup
• Enable pin for easy control of power output
• Power good indicator for monitoring output voltage stability

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption
• Wide input voltage range provides versatility in applications
• Adjustable output voltage allows customization for specific requirements
• Small package size saves board space
• Power good indicator ensures stable output voltage

Disadvantages

• Limited maximum output current of 1A
• Requires external components for operation
• Not suitable for applications requiring higher output currents

Working Principles

The LT3477EFE#TRPBF is a step-up DC/DC converter that regulates and converts an input voltage to a higher output voltage efficiently. It utilizes a high switching frequency of 1.3MHz to minimize the size of external components such as inductors and capacitors. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

During startup, the soft-start feature gradually increases the output voltage to prevent excessive inrush current. The enable pin allows easy control of the power output, enabling the device to be turned on or off as needed. The power good indicator monitors the output voltage stability, providing a signal when the voltage reaches the desired level.

Detailed Application Field Plans

The LT3477EFE#TRPBF is commonly used in various applications where a higher output voltage is required. Some typical application fields include:

1. Battery-powered devices: Used to boost battery voltage to power components requiring higher voltages.
2. LED lighting: Converts low voltage sources to drive LED strings with higher voltage requirements.
3. Portable electronics: Provides efficient power conversion for portable devices such as smartphones, tablets, and portable audio players.
4. Industrial equipment: Used in industrial automation systems, motor control circuits, and other applications requiring higher voltage levels.

Detailed and Complete Alternative Models

1. LT3477EFE#PBF: Same specifications and features as LT3477EFE#TRPBF, but packaged in a 16-Lead TSSOP tube.
2. LT3477IFE#TRPBF: Similar to LT3477EFE#TRPBF, but with an extended operating temperature range of -40°C to 150°C.
3. LT3477HFE#TRPBF: Higher maximum output current of 2A, suitable for applications requiring higher power levels.

These alternative models offer similar functionality and characteristics, providing options based on specific requirements and preferences.

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