LTC3576EUFE#PBF

Product Overview

Category

LTC3576EUFE#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is commonly used in various electronic devices to efficiently regulate and control power supply, ensuring stable and reliable operation.

Characteristics

• High efficiency: The LTC3576EUFE#PBF offers excellent power conversion efficiency, minimizing energy loss during operation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Compact package: This IC is available in a small form factor package, enabling space-saving designs.
• Versatile functionality: It provides multiple features such as voltage regulation, current limiting, and thermal shutdown protection.

Package and Quantity

The LTC3576EUFE#PBF is typically packaged in a 24-pin QFN (Quad Flat No-Lead) package. It is supplied in reels or tubes, with a standard quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Maximum Output Current: 3A
• Switching Frequency: Up to 4MHz
• Operating Temperature Range: -40°C to 85°C
• Package Type: 24-pin QFN

Pin Configuration

The LTC3576EUFE#PBF has a total of 24 pins, each serving a specific function. Here is a detailed pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. SW: Switching node connection
4. PGND: Power ground pin
5. VOUT: Output voltage pin
6. FB: Feedback pin for output voltage regulation
7. EN: Enable pin for turning the IC on/off
8. SS: Soft-start capacitor connection
9. BST: Boost voltage input pin
10. LX: Inductor connection pin
11. AGND: Analog ground reference pin
12. VCC: Supply voltage pin for internal circuitry
13. PG: Power good indicator output pin
14. MODE: Mode selection pin
15. SYNC: Synchronization input pin
16. RT: External resistor connection for setting switching frequency
17. COMP: Compensation pin for loop stability
18. SS/TRK: Soft-start/tracking pin
19. ITH: Current limit threshold setting pin
20. OCSET: Overcurrent protection threshold setting pin
21. PGOOD: Power good indicator input pin
22. VREF: Reference voltage output pin
23. CLKOUT: Clock output pin
24. CLKIN: Clock input pin

Functional Features

The LTC3576EUFE#PBF offers several functional features that enhance its performance and usability:

1. High-efficiency Buck-Boost converter: This IC can regulate the output voltage efficiently, even when the input voltage is higher or lower than the desired output voltage.
2. Adjustable output voltage: The output voltage can be easily adjusted within a wide range to meet specific application requirements.
3. Current limiting and thermal shutdown protection: The LTC3576EUFE#PBF incorporates built-in protection mechanisms to prevent excessive current flow and overheating, ensuring safe operation.
4. Power good indicator: It provides an indication of the output voltage status, allowing for easy monitoring and fault detection.
5. Synchronization capability: The IC can synchronize its switching frequency with an external clock signal, enabling system-level synchronization.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and longer battery life.
• Wide input voltage range allows for compatibility with various power sources.
• Compact package enables space-saving designs in compact electronic devices.
• Versatile functionality provides flexibility for different power management applications.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires external components for proper operation, increasing system complexity.

Working Principles

The LTC3576EUFE#PBF operates based on the principles of Buck-Boost conversion. It utilizes a combination of switches, inductors, capacitors, and control circuitry to efficiently convert the input voltage to the desired output voltage level. By controlling the switching frequency and duty cycle of the internal switches, the IC regulates the output voltage while minimizing energy loss.

Detailed Application Field Plans

The LTC3576EUFE#PBF finds applications in various fields, including but not limited to:

1. Portable electronic devices: It can be used in smartphones, tablets, and wearable devices to manage power supply efficiently.
2. Industrial equipment: The IC is suitable for powering sensors, actuators, and control systems in industrial automation applications.
3. Automotive electronics: It can be employed in automotive infotainment systems, lighting