LTC3351EUFF#PBF

Product Overview

Category

LTC3351EUFF#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is primarily used for power supply and voltage regulation in various electronic devices and systems.

Characteristics

• High efficiency: The LTC3351EUFF#PBF offers high conversion efficiency, ensuring optimal power utilization.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Low quiescent current: The device exhibits low power consumption during standby or idle modes.
• Overvoltage and overcurrent protection: It incorporates built-in protection mechanisms to safeguard against voltage spikes and excessive current flow.
• Compact package: The LTC3351EUFF#PBF is available in a small form factor package, enabling space-efficient integration into electronic designs.
• RoHS compliant: This product adheres to the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

The LTC3351EUFF#PBF is packaged in a compact 24-pin QFN (Quad Flat No-Lead) package. It is typically sold in reels containing a specified quantity of units.

Specifications

• Input Voltage Range: 2.7V - 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Maximum Output Current: 3A
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Protection Features: Overvoltage, Overcurrent, and Thermal Shutdown

Pin Configuration

The LTC3351EUFF#PBF features a 24-pin QFN package with the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. VOUT: Output Voltage
4. EN: Enable Pin
5. FB: Feedback Pin
6. SS: Soft-Start Pin
7. PG: Power Good Indicator
8. BST: Boost Pin
9. SW: Switch Node
10. AGND: Analog Ground
11. VIN: Input Voltage
12. GND: Ground
13. VOUT: Output Voltage
14. EN: Enable Pin
15. FB: Feedback Pin
16. SS: Soft-Start Pin
17. PG: Power Good Indicator
18. BST: Boost Pin
19. SW: Switch Node
20. AGND: Analog Ground
21. VIN: Input Voltage
22. GND: Ground
23. VOUT: Output Voltage
24. EN: Enable Pin

Functional Features

The LTC3351EUFF#PBF offers the following functional features:

1. High Efficiency Conversion: The device employs advanced power management techniques to achieve high conversion efficiency, minimizing power losses.
2. Adjustable Output Voltage: The output voltage can be easily adjusted within a specified range, providing flexibility for various applications.
3. Power Good Indicator: The integrated power good indicator signals the system when the output voltage is within the desired range, ensuring reliable operation.
4. Soft-Start Functionality: The soft-start feature allows for gradual ramp-up of the output voltage, preventing excessive inrush current during startup.
5. Overvoltage and Overcurrent Protection: The LTC3351EUFF#PBF incorporates protection mechanisms to prevent damage from voltage spikes and excessive current flow.

Advantages and Disadvantages

Advantages

• High conversion efficiency ensures optimal power utilization.
• Wide input voltage range enables compatibility with diverse power sources.
• Compact package facilitates space-efficient integration into electronic designs.
• Built-in protection mechanisms safeguard against overvoltage and overcurrent conditions.
• RoHS compliance ensures environmental friendliness.

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications.
• Operating temperature range of -40°C to 85°C may restrict usage in extreme environments.

Working Principles

The LTC3351EUFF#PBF operates based on a switching regulator topology. It utilizes a combination of inductors, capacitors, and switches to efficiently convert the input voltage to the desired output voltage. The device employs pulse-width modulation (PWM) techniques to regulate the output voltage and maintain stability under varying load conditions. Additionally, it incorporates control circuitry to monitor and protect against overvoltage, overcurrent, and thermal events.

Application Field Plans

The LTC3351EUFF#PBF finds application in various fields, including but not limited to: - Portable electronic devices: Power supply and voltage regulation for smartphones, tablets, and wearable devices. - Industrial automation: Power management for control systems, sensors, and actuators. - Automotive electronics: Voltage regulation for infotainment systems, lighting, and powertrain components. - Internet of