LT3952HFE#PBF

Product Overview

Category

The LT3952HFE#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is primarily used for controlling and regulating the power supply in various electronic devices and systems.

Characteristics

• High efficiency: The LT3952HFE#PBF is known for its high efficiency, ensuring minimal power loss during operation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Multiple outputs: This IC provides multiple regulated output voltages, allowing for flexible power distribution.
• Current mode control: It utilizes current mode control architecture, enabling stable and reliable power regulation.

Package

The LT3952HFE#PBF is available in a compact and industry-standard 28-pin TSSOP package. This package offers excellent thermal performance and ease of integration into various circuit designs.

Essence

The essence of the LT3952HFE#PBF lies in its ability to efficiently manage power supply, ensuring stable and reliable operation of electronic devices.

Packaging/Quantity

The LT3952HFE#PBF is typically packaged in reels, containing a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4V to 60V
• Output Voltage Range: Adjustable from 0.8V to 55V
• Maximum Switching Frequency: 1MHz
• Maximum Output Current: 4A
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3952HFE#PBF features a total of 28 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VCC: Supply voltage pin
4. SYNC: Synchronization input pin
5. FB1: Feedback pin for output 1
6. FB2: Feedback pin for output 2
7. FB3: Feedback pin for output 3
8. FB4: Feedback pin for output 4
9. SS/TRK: Soft-start/Tracking control pin
10. RT/CLKOUT: Timing resistor/Clock output pin
11. CLKIN: Clock input pin
12. VREF: Reference voltage output pin
13. AGND: Analog ground pin
14. PGND: Power ground pin
15. SW1: Switching node pin for output 1
16. SW2: Switching node pin for output 2
17. SW3: Switching node pin for output 3
18. SW4: Switching node pin for output 4
19. BST1: Boost capacitor connection pin for output 1
20. BST2: Boost capacitor connection pin for output 2
21. BST3: Boost capacitor connection pin for output 3
22. BST4: Boost capacitor connection pin for output 4
23. LX: Inductor connection pin
24. VOUT1: Output pin for output 1
25. VOUT2: Output pin for output 2
26. VOUT3: Output pin for output 3
27. VOUT4: Output pin for output 4
28. ADJ: Adjust pin for output voltage adjustment

Functional Features

The LT3952HFE#PBF offers several functional features that enhance its performance and usability:

• Wide input voltage range allows for compatibility with various power sources.
• Multiple regulated outputs enable flexible power distribution to different components.
• Current mode control architecture ensures stable and reliable power regulation.
• Soft-start and tracking control facilitate smooth startup and operation.
• Clock input and output pins enable synchronization with other devices or systems.
• Reference voltage output pin provides a stable reference for precise voltage regulation.

Advantages and Disadvantages

Advantages

• High efficiency results in minimal power loss.
• Wide input voltage range allows for versatile applications.
• Multiple outputs provide flexibility in power distribution.
• Compact package facilitates integration into various circuit designs.
• Current mode control ensures stable and reliable power regulation.

Disadvantages

• Limited maximum output current of 4A may not be suitable for high-power applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

The LT3952HFE#PBF operates based on a current mode control architecture. It regulates the power supply by continuously monitoring the current flowing through the inductor and adjusting the duty cycle of the internal switches accordingly. This control mechanism ensures stable and efficient power delivery to the connected loads.

Detailed Application Field Plans

The LT3952HFE#PBF finds application in various fields where efficient power management is crucial. Some detailed application field plans include:

1. Industrial Automation: Power supply control