LTC3780MPG#PBF

Product Overview

Category: Power Management ICs
Use: Voltage Regulator
Characteristics: High Efficiency, Wide Input Voltage Range
Package: 20-Lead SSOP
Essence: Step-Down DC/DC Controller
Packaging/Quantity: Tube/25 pieces per tube

Specifications

• Input Voltage Range: 4V to 38V
• Output Voltage Range: 0.8V to 36V
• Switching Frequency: Up to 1MHz
• Maximum Duty Cycle: 99%
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Voltage
4. COMP: Compensation Node
5. SS: Soft-Start Control
6. VCC: Supply Voltage
7. SYNC: Synchronization Input
8. PGND: Power Ground
9. SW: Switch Node
10. BST: Bootstrap Capacitor Connection
11. PGOOD: Power Good Indicator
12. EN: Enable Control
13. RT/SS: Resistor for Setting Switching Frequency or Soft-Start Time
14. ITH: Current Sense Threshold
15. OCSET: Overcurrent Protection Threshold
16. SS/TRK: Soft-Start Tracking Control
17. VFB: Feedback Voltage
18. AGND: Analog Ground
19. VSENSE: Current Sense Voltage
20. VOUT: Output Voltage

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency conversion minimizes power loss.
• Adjustable output voltage provides flexibility.
• Synchronization input enables multiple LTC3780MPG#PBF devices to operate in parallel.
• Soft-start control ensures smooth startup and prevents voltage overshoot.
• Overcurrent protection safeguards the circuit from excessive current.

Advantages

• High efficiency results in reduced power consumption.
• Wide input voltage range accommodates various power sources.
• Adjustable output voltage suits different load requirements.
• Synchronization capability allows for parallel operation.
• Soft-start control prevents voltage spikes during startup.
• Overcurrent protection enhances system reliability.

Disadvantages

• Limited to step-down voltage regulation only.
• Requires additional external components for complete functionality.
• Higher cost compared to simpler voltage regulators.

Working Principles

The LTC3780MPG#PBF is a step-down DC/DC controller that regulates the output voltage based on the feedback received. It utilizes a high-frequency switching technique to efficiently convert the input voltage to the desired output voltage. The device employs a feedback loop to continuously monitor and adjust the output voltage, ensuring stability and accuracy. Various protection features, such as overcurrent protection, are integrated to safeguard the circuit and connected components.

Detailed Application Field Plans

The LTC3780MPG#PBF finds applications in various fields, including:

1. Industrial Automation: Powering control systems, motor drives, and sensors.
2. Automotive Electronics: Voltage regulation for infotainment systems, lighting, and powertrain modules.
3. Telecommunications: Powering base stations, routers, and network equipment.
4. Renewable Energy: Voltage regulation in solar panels, wind turbines, and energy storage systems.
5. Consumer Electronics: Powering portable devices, audio/video equipment, and gaming consoles.

Detailed and Complete Alternative Models

1. LT8610ABEUJ#PBF: Step-Down DC/DC Controller with similar specifications and package.
2. LT3976EMSE#PBF: Step-Down DC/DC Controller with lower input voltage range and smaller package.
3. LT8640SIV#PBF: Step-Down DC/DC Controller with higher switching frequency and wider temperature range.

(Note: This is not an exhaustive list, and there are other alternative models available in the market.)

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