LTC3852EUDD#PBF

Product Overview

Category

The LTC3852EUDD#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is primarily used in various electronic devices and systems to efficiently regulate and control power supply voltages.

Characteristics

• High efficiency: The LTC3852EUDD#PBF offers high conversion efficiency, minimizing power losses during voltage regulation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Compact package: The LTC3852EUDD#PBF comes in a small form factor package, enabling space-saving designs.
• Robustness: This IC is designed to withstand harsh operating conditions, ensuring reliability and longevity.
• Versatility: It supports multiple output configurations, allowing flexibility in power supply design.

Package and Quantity

The LTC3852EUDD#PBF is available in a 12-pin dual flat no-leads (DFN) package. It is typically sold in reels containing a specified quantity of units.

Specifications

• Input Voltage Range: 4.5V to 38V
• Output Voltage Range: Adjustable from 0.8V to 24V
• Maximum Output Current: 10A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to 125°C
• Control Method: Constant frequency current mode control

Pin Configuration

The LTC3852EUDD#PBF features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. FB: Feedback pin for output voltage regulation
4. SS: Soft-start pin for controlling startup behavior
5. SYNC: Synchronization pin for external clock synchronization
6. VOUT: Output voltage pin
7. PGND: Power ground reference pin
8. VCC: Supply voltage pin for internal control circuitry
9. RT/CLKOUT: External resistor connection for setting switching frequency or generating a clock output
10. SS/TRK: Soft-start/tracking pin for controlling startup behavior or tracking an external voltage
11. ITH: Current sense threshold pin for current limit adjustment
12. BST: Boost pin for driving the high-side MOSFET

Functional Features

• Constant frequency current mode control: The LTC3852EUDD#PBF utilizes this control method to regulate the output voltage accurately.
• Adjustable soft-start: The soft-start feature allows gradual ramp-up of the output voltage, preventing excessive inrush current.
• Synchronization capability: It can synchronize its switching frequency with an external clock signal for noise reduction or system integration purposes.
• Overcurrent protection: The IC incorporates overcurrent protection to safeguard against excessive load currents.
• Thermal shutdown: In case of excessive temperature, the LTC3852EUDD#PBF automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation and improved energy utilization.
• Wide input voltage range enables compatibility with various power sources.
• Compact package facilitates space-constrained designs.
• Robustness ensures reliable operation in demanding environments.
• Versatility allows for flexible power supply configurations.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Requires careful thermal management due to high power density.

Working Principles

The LTC3852EUDD#PBF operates based on a constant frequency current mode control scheme. It regulates the output voltage by adjusting the duty cycle of the internal power switch. This control method ensures accurate voltage regulation and fast transient response.

When the input voltage is applied, the LTC3852EUDD#PBF starts switching the internal power switch at a fixed frequency. The feedback pin monitors the output voltage and adjusts the duty cycle accordingly to maintain the desired voltage level.

Detailed Application Field Plans

The LTC3852EUDD#PBF finds applications in various fields, including but not limited to: - Industrial automation - Telecommunications equipment - Automotive electronics - Power distribution systems - Renewable energy systems

In industrial automation, it can be used for controlling motor drives, PLCs (Programmable Logic Controllers), and other power-hungry devices. In telecommunications equipment, it enables efficient power management in base stations, routers, and network switches. Automotive electronics benefit from its ability to regulate voltages in infotainment systems, lighting modules, and advanced driver-assistance systems (ADAS).

Power distribution systems utilize the LTC3852EUDD#PBF for voltage regulation in DC-DC converters, power supplies, and battery charging circuits. Renewable energy systems, such as solar inverters and wind turbine controllers, rely on this IC for efficient power conversion.

Detailed and Complete Alternative Models

1. LT8610ABEUJ#PBF: