MCP19123-E/MQ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance synchronous buck controller
• Package: MQ package (Quad Flat No-Lead)
• Essence: Efficient power conversion and management
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Voltage Range: 4.5V to 32V
• Output Voltage Range: 0.8V to 24V
• Maximum Output Current: 10A
• Switching Frequency: Up to 2MHz
• Control Method: Voltage Mode Control
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MCP19123-E/MQ has a total of 16 pins. The pin configuration is as follows:

1. VDD - Power supply voltage input
2. VIN - Input voltage
3. PGND - Power ground
4. SW - Switch node connection for the power stage
5. FB - Feedback voltage input
6. COMP - Compensation node for loop stability
7. CS - Current sense input
8. SS - Soft-start capacitor connection
9. RT - External resistor connected to set switching frequency
10. CT - External capacitor connected to set soft-start time
11. EN - Enable pin to turn the device on/off
12. SS/TRACK - Soft-start or tracking mode selection
13. VREF - Reference voltage output
14. AGND - Analog ground
15. VOUT - Output voltage
16. PGND - Power ground

Functional Features

• Voltage Mode Control: The MCP19123-E/MQ utilizes voltage mode control to regulate the output voltage.
• High Efficiency: The IC offers high efficiency power conversion, resulting in reduced power loss and improved energy efficiency.
• Wide Input Voltage Range: The device can operate with input voltages ranging from 4.5V to 32V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within a range of 0.8V to 24V, providing flexibility in power management.
• High Output Current: With a maximum output current of 10A, the MCP19123-E/MQ can handle demanding power requirements.
• Fast Switching Frequency: The IC supports switching frequencies up to 2MHz, enabling efficient power conversion.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Adjustable output voltage - High output current capability - Fast switching frequency

Disadvantages: - Limited availability in MQ package - Requires external components for operation

Working Principles

The MCP19123-E/MQ is a synchronous buck controller that operates based on voltage mode control. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage (VREF). The control loop adjusts the duty cycle of the power stage to maintain the desired output voltage. By utilizing high-frequency switching, the IC achieves efficient power conversion.

Detailed Application Field Plans

The MCP19123-E/MQ finds applications in various fields, including but not limited to:

1. Power Supplies: The IC can be used in power supply designs for industrial equipment, consumer electronics, and automotive systems.
2. LED Lighting: It is suitable for driving LED lighting systems, offering precise voltage regulation and high efficiency.
3. Battery Charging: The MCP19123-E/MQ can be employed in battery charging circuits, ensuring optimal charging performance.
4. Motor Control: It can be utilized in motor control applications, providing efficient power conversion for motor drives.

Detailed and Complete Alternative Models

1. MCP19122-E/MQ: Similar to MCP19123-E/MQ, but with a lower maximum output current of 5A.
2. MCP19124-E/MQ: Similar to MCP19123-E/MQ, but with a higher maximum output current of 15A.
3. MCP19125-E/MQ: Similar to MCP19123-E/MQ, but with additional features such as integrated MOSFET drivers.

Note: The above alternative models are part of the same product family and offer similar functionality with slight variations in specifications.

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