規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.3V |
| Voltage - Input (Max) | 36V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 28.8V |
| Current - Output | 600mA |
| Frequency - Switching | 2MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概述
Description
The MP2451DJ-LF-Z is a step-down DC-DC converter designed for high-efficiency voltage regulation applications. It is part of the MP2451 series, which is known for its compactness and operational efficiency. This device can handle input voltages ranging from 4.5V to 36V and output currents up to 0.5A, making it suitable for a wide range of applications including portable devices, automotive systems, and industrial equipment.
Key features of the MP2451DJ-LF-Z include a built-in power MOSFET, high switching frequency (up to 1.4MHz), and a current-mode control for fast transient response and loop stability. The device also offers protection features such as thermal shutdown, and over-current protection, enhancing its reliability.
The MP2451DJ-LF-Z comes in a small, 8-pin SOIC package, contributing to space savings on the circuit board. Its efficiency, typically up to 90%, minimizes power loss and heat dissipation, making it an ideal choice for energy-conscious designs.
Key features of the MP2451DJ-LF-Z include a built-in power MOSFET, high switching frequency (up to 1.4MHz), and a current-mode control for fast transient response and loop stability. The device also offers protection features such as thermal shutdown, and over-current protection, enhancing its reliability.
The MP2451DJ-LF-Z comes in a small, 8-pin SOIC package, contributing to space savings on the circuit board. Its efficiency, typically up to 90%, minimizes power loss and heat dissipation, making it an ideal choice for energy-conscious designs.
Equivalent
The MP2451DJ-LF-Z is a DC-DC buck converter. Equivalent products include:
1. Texas Instruments LM2596 - 3A step-down voltage regulator.
2. Microchip MCP16301 - High-efficiency buck regulator.
3. On Semiconductor NCP1014 - 3A step-down switching regulator.
These alternatives may not be drop-in replacements, so always verify pin configuration, electrical characteristics, and thermal performance.
1. Texas Instruments LM2596 - 3A step-down voltage regulator.
2. Microchip MCP16301 - High-efficiency buck regulator.
3. On Semiconductor NCP1014 - 3A step-down switching regulator.
These alternatives may not be drop-in replacements, so always verify pin configuration, electrical characteristics, and thermal performance.
Features
The MP2451DJ-LF-Z is a step-down DC-DC converter designed for efficient power management. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 36V, making it versatile for various applications.
2. Output Current: Delivers up to 2A continuous output current.
3. High Efficiency: Offers up to 97% efficiency, which minimizes energy loss and heat generation.
4. Adjustable Output Voltage: The output voltage can be set through an external resistor divider.
5. Switching Frequency: Operates at a fixed 1.2MHz frequency, enabling the use of small external components.
6. Protection Features: Includes over-current protection, thermal shutdown, and under-voltage lockout for reliable operation.
7. Low Dropout Operation: Allows the device to remain in regulation with minimal input-to-output voltage differential.
8. Compact Package: Available in a small TSOT23-6 package, suitable for space-constrained designs.
These features make the MP2451DJ-LF-Z suitable for use in consumer electronics, industrial applications, and distributed power systems, where efficient power conversion and compact size are essential.
1. Wide Input Voltage Range: Operates from 4.5V to 36V, making it versatile for various applications.
2. Output Current: Delivers up to 2A continuous output current.
3. High Efficiency: Offers up to 97% efficiency, which minimizes energy loss and heat generation.
4. Adjustable Output Voltage: The output voltage can be set through an external resistor divider.
5. Switching Frequency: Operates at a fixed 1.2MHz frequency, enabling the use of small external components.
6. Protection Features: Includes over-current protection, thermal shutdown, and under-voltage lockout for reliable operation.
7. Low Dropout Operation: Allows the device to remain in regulation with minimal input-to-output voltage differential.
8. Compact Package: Available in a small TSOT23-6 package, suitable for space-constrained designs.
These features make the MP2451DJ-LF-Z suitable for use in consumer electronics, industrial applications, and distributed power systems, where efficient power conversion and compact size are essential.
Pinout
The MP2451DJ-LF-Z is a monolithic step-down switch mode converter from Monolithic Power Systems. It has a pin count of 8, typically in an SOIC-8 package. The primary function of this device is to convert higher voltage input (up to 36V) to a regulated lower voltage output at a maximum output current of 0.5A.
Key functions of the pins typically include:
1. VIN: Input voltage supply.
2. SW: Switch node connected to the inductor.
3. GND: Ground reference for the IC.
4. FB: Feedback pin for setting the output voltage.
5. EN: Enable pin for turning the IC on or off.
6. COMP: Compensation pin for stability and transient response.
7. BS: Bootstrap pin for driving the internal high-side MOSFET gate.
8. SS: Soft start control to limit inrush current during startup.
These functions are vital for regulating voltage efficiently, maintaining stability, and allowing for control flexibility in various applications.
Key functions of the pins typically include:
1. VIN: Input voltage supply.
2. SW: Switch node connected to the inductor.
3. GND: Ground reference for the IC.
4. FB: Feedback pin for setting the output voltage.
5. EN: Enable pin for turning the IC on or off.
6. COMP: Compensation pin for stability and transient response.
7. BS: Bootstrap pin for driving the internal high-side MOSFET gate.
8. SS: Soft start control to limit inrush current during startup.
These functions are vital for regulating voltage efficiently, maintaining stability, and allowing for control flexibility in various applications.
Manufacturer
The MP2451DJ-LF-Z is manufactured by Monolithic Power Systems (MPS). MPS is a semiconductor company that specializes in the design, development, and sale of integrated power solutions. They focus on providing high-performance analog and mixed-signal power management solutions, which are essential for powering electronic systems in various industries, including automotive, industrial, communications, and consumer electronics. MPS is known for its innovative approach to power management, integrating advanced technology to deliver efficient and reliable solutions.
Application
The MP2451DJ-LF-Z is a buck converter IC primarily used in applications requiring efficient step-down voltage conversion. Its typical application areas include consumer electronics, industrial equipment, telecommunications, and computing devices. It's commonly found in power management for portable devices, battery-operated gadgets, and any systems needing a reliable and compact DC-DC conversion solution. The device supports a wide input voltage range and provides stable output, making it suitable for a variety of electronic circuit designs where energy efficiency and space-saving are crucial.
Package
The MP2451DJ-LF-Z is a DC-DC buck converter from Monolithic Power Systems. It is typically packaged in a TSOT-23-6 format, which is a small outline package with 6 leads, designed for surface mounting on circuit boards.
