MCP1631VT-E/SS

Product Overview

Category

The MCP1631VT-E/SS belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various power supply designs, including battery chargers, LED drivers, and other low-power applications.

Characteristics

• High efficiency: The MCP1631VT-E/SS offers high conversion 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 power supply requirements.
• Adjustable output voltage: The IC allows for adjustable output voltage, providing flexibility in meeting specific application needs.
• Compact package: The MCP1631VT-E/SS is available in a small surface-mount package, enabling space-saving integration into electronic devices.
• Low standby current: It features low standby current consumption, contributing to energy-efficient operation.

Package and Quantity

The MCP1631VT-E/SS is packaged in a SSOP-16 package. Each package contains one IC.

Specifications

• Input Voltage Range: 4.5V to 30V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 1.5A
• Switching Frequency: 500kHz (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MCP1631VT-E/SS has a total of 16 pins, which are assigned specific functions as follows:

1. VFB: Feedback Voltage Input
2. COMP: Compensation Node
3. CS: Current Sense Input
4. GND: Ground
5. SW: Switch Node
6. VDD: Power Supply Input
7. EN: Enable Input
8. RT: Oscillator Timing Resistor
9. CT: Oscillator Timing Capacitor
10. SS: Soft-Start Pin
11. VOUT: Output Voltage
12. FB2: Feedback Voltage Input 2
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection

Functional Features

• Constant voltage (CV) and constant current (CC) modes: The MCP1631VT-E/SS can operate in both CV and CC modes, allowing for versatile power supply designs.
• Overvoltage protection (OVP): It incorporates OVP circuitry to safeguard the connected load from excessive voltage levels.
• Overcurrent protection (OCP): The IC includes OCP functionality to protect against excessive output currents, ensuring safe operation.
• Soft-start function: The soft-start pin enables gradual ramp-up of the output voltage, preventing sudden voltage spikes during startup.

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption and improved energy efficiency.
• Wide input voltage range allows for compatibility with various power sources.
• Adjustable output voltage provides flexibility in meeting specific application requirements.
• Compact package facilitates space-saving integration into electronic devices.
• Low standby current contributes to energy-efficient operation.

Disadvantages

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

Working Principles

The MCP1631VT-E/SS operates as a pulse-width modulation (PWM) controller. It regulates the output voltage by adjusting the duty cycle of the internal power switch. By continuously monitoring the feedback voltage, the IC dynamically adjusts the duty cycle to maintain a stable output voltage.

Detailed Application Field Plans

The MCP1631VT-E/SS finds extensive use in various applications, including: - Battery chargers for portable electronic devices - LED drivers for lighting applications - Power supplies for low-power embedded systems - Solar-powered devices and systems - Automotive electronics

Detailed Alternative Models

1. MCP1631HV-E/SS: Similar to the MCP1631VT-E/SS, but designed for higher input voltage applications (up to 60V).
2. MCP1631RD-E/SS: A variant with integrated overvoltage and overcurrent protection features.
3. MCP1631DM-BB: A demonstration board that showcases the capabilities of the MCP1631 series ICs.

These alternative models offer similar functionality and can be considered as suitable replacements for the MCP1631VT-E/SS in specific applications.

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