LTC3786HMSE#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current mode control - Synchronous rectification - Programmable soft-start - Overvoltage protection - Overcurrent protection

Package: MSE-12

Essence: The LTC3786HMSE#PBF is a power management integrated circuit designed for high-efficiency step-up, step-down, and inverting applications.

Packaging/Quantity: The LTC3786HMSE#PBF is available in a 12-pin plastic MSE package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 36V
• Output Voltage Range: 1.2V to 36V
• Switching Frequency: Up to 2MHz
• Maximum Output Current: 4A
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC3786HMSE#PBF has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. SW: Switch node connection
4. FB: Feedback voltage input
5. SS/TR: Soft-start/Tracking control
6. VCC: Supply voltage for internal circuitry
7. PGND: Power ground
8. SYNC: External synchronization input
9. RT/CLKOUT: Oscillator resistor or clock output
10. MODE: Mode selection pin
11. PGOOD: Power good indicator
12. LX: Inductor connection

Functional Features

• Wide input voltage range allows for versatile applications.
• Current mode control provides stable and efficient operation.
• Synchronous rectification improves overall efficiency.
• Programmable soft-start enables controlled startup of the system.
• Overvoltage and overcurrent protection ensure safe operation.

Advantages

• High efficiency leads to reduced power consumption.
• Wide input voltage range allows for compatibility with various power sources.
• Adjustable output voltage provides flexibility in different applications.
• Current mode control ensures stable and reliable operation.
• Synchronous rectification improves overall efficiency.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• The MSE package may require additional thermal management for certain operating conditions.

Working Principles

The LTC3786HMSE#PBF operates based on a current mode control architecture. It utilizes an internal oscillator to generate switching signals for the power MOSFETs, which regulate the output voltage. The feedback voltage is compared to a reference voltage, and the error signal is used to adjust the duty cycle of the switches, maintaining the desired output voltage. The synchronous rectification mechanism further enhances efficiency by reducing power losses during switching transitions.

Detailed Application Field Plans

The LTC3786HMSE#PBF can be applied in various fields, including but not limited to: 1. Battery-powered devices 2. Industrial automation systems 3. Automotive electronics 4. Telecommunications equipment 5. Renewable energy systems

Alternative Models

Some alternative models that offer similar functionality to the LTC3786HMSE#PBF include: - LT3756: Similar specifications and features, available in a different package. - LTC3780: Higher maximum output current, suitable for higher-power applications. - LT8390: Wide input voltage range, adjustable output voltage, and high efficiency.

These alternative models can be considered based on specific application requirements and design constraints.

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