MCP1631HVT-330E/ST

Product Overview

Category

The MCP1631HVT-330E/ST 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 switch-mode power supplies (SMPS), battery chargers, and LED drivers.

Characteristics

• High voltage input range: The MCP1631HVT-330E/ST can handle input voltages up to 40V, making it suitable for a wide range of applications.
• Switching frequency: It operates at a fixed switching frequency of 500 kHz, ensuring efficient power conversion.
• Integrated features: This IC incorporates a high-voltage buck regulator, current mode control, and various protection features such as overvoltage and overcurrent protection.
• Small package size: The MCP1631HVT-330E/ST is available in a compact SOT-23 package, allowing for space-efficient designs.
• Low quiescent current: It has a low quiescent current consumption, enabling energy-efficient operation.

Package and Quantity

The MCP1631HVT-330E/ST is packaged in a standard SOT-23 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Input Voltage Range: Up to 40V
• Output Voltage Range: Adjustable from 2.5V to 36V
• Switching Frequency: 500 kHz
• Quiescent Current: 100 µA (typical)
• Maximum Output Current: 500 mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MCP1631HVT-330E/ST has a total of six pins arranged as follows:

___________ | | VFB|1 6|VIN VOUT|2 5|GND VCC|3 4|SW |___________|

• VFB: Feedback pin for voltage regulation.
• VOUT: Output voltage pin.
• VCC: Power supply input pin.
• SW: Switching node pin.
• VIN: Input voltage pin.
• GND: Ground reference pin.

Functional Features

• Current Mode Control: The MCP1631HVT-330E/ST utilizes current mode control to regulate the output voltage, providing stable and efficient power conversion.
• Overvoltage Protection: It incorporates overvoltage protection circuitry to safeguard the connected load from excessive voltage levels.
• Overcurrent Protection: The IC includes overcurrent protection features to prevent damage due to excessive current flow.
• Soft-Start Function: This feature ensures a controlled startup of the power supply, minimizing inrush currents and protecting the components.
• Frequency Foldback: In case of a short circuit or overload condition, the switching frequency is reduced to limit power dissipation and protect the IC.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Compact package size enables space-efficient designs.
• Integrated protection features enhance system reliability.
• High switching frequency ensures efficient power conversion.
• Low quiescent current consumption for energy efficiency.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Fixed switching frequency may not be adjustable for specific requirements.

Working Principles

The MCP1631HVT-330E/ST operates as a buck regulator, converting a higher input voltage to a lower output voltage. It utilizes current mode control to regulate the output voltage by adjusting the duty cycle of the internal switch. By monitoring the feedback voltage (VFB), the IC adjusts the duty cycle to maintain a stable output voltage. The switching frequency is fixed at 500 kHz, ensuring efficient power conversion.

Application Field Plans

The MCP1631HVT-330E/ST finds applications in various power supply designs, including: - Switch-mode power supplies (SMPS) for industrial and consumer electronics. - Battery chargers for portable devices and electric vehicles. - LED drivers for lighting applications. - Power management systems in automotive electronics. - Distributed power systems in telecommunications.

Alternative Models

For those seeking alternative options, the following ICs can be considered: - MCP1631HV: Similar to MCP1631HVT-330E/ST but without the SOT-23 package. - MCP1631RD: A related IC with additional features such as adjustable switching frequency and synchronization capability. - LT8610: A high-performance buck regulator IC with a wide input voltage range and adjustable switching frequency.

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

In conclusion, the MCP1631HVT-330E/ST is a versatile integrated circuit designed for power management applications. Its high voltage input range, compact