仕様
| 属性 | 値 |
| 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) | 3.8V |
| Voltage - Input (Max) | 36V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 30V |
| Current - Output | 2.5A |
| Frequency - Switching | Up to 4MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The MP4460DQ-LF-Z is a step-down (buck) converter from Monolithic Power Systems. It is designed to provide high efficiency, compact size, and reliable performance for a variety of power management applications. The device integrates a 4A peak current limit, and typically operates over an input voltage range of 4.5V to 36V, making it suitable for a wide range of applications, including automotive, industrial, and consumer electronics.
Key features include a fixed 340kHz switching frequency, which helps reduce the size of external components and minimizes EMI. The MP4460 incorporates a high-side switch and a synchronous rectifier to achieve high power efficiency and reduce the number of required external components. It also features cycle-by-cycle current limiting, under-voltage lockout, and thermal shutdown to enhance reliability and performance.
The MP4460DQ-LF-Z package is typically designed for space-constrained applications, providing a compact solution for power conversion needs. This converter is an ideal choice for applications requiring efficient, reliable DC-DC buck conversion in a small form factor.
Key features include a fixed 340kHz switching frequency, which helps reduce the size of external components and minimizes EMI. The MP4460 incorporates a high-side switch and a synchronous rectifier to achieve high power efficiency and reduce the number of required external components. It also features cycle-by-cycle current limiting, under-voltage lockout, and thermal shutdown to enhance reliability and performance.
The MP4460DQ-LF-Z package is typically designed for space-constrained applications, providing a compact solution for power conversion needs. This converter is an ideal choice for applications requiring efficient, reliable DC-DC buck conversion in a small form factor.
Equivalent
The MP4460DQ-LF-Z is a DC-DC buck converter. Equivalent products include:
1. LM2596: A step-down voltage regulator by Texas Instruments.
2. LM2675: A simple switcher power converter also by Texas Instruments.
3. LTC3605: A high-efficiency monolithic synchronous step-down regulator by Analog Devices.
4. TPS54331: A 3A, step-down converter by Texas Instruments.
Ensure compatibility in terms of specifications like input/output voltage, current rating, and switching frequency when considering alternatives.
1. LM2596: A step-down voltage regulator by Texas Instruments.
2. LM2675: A simple switcher power converter also by Texas Instruments.
3. LTC3605: A high-efficiency monolithic synchronous step-down regulator by Analog Devices.
4. TPS54331: A 3A, step-down converter by Texas Instruments.
Ensure compatibility in terms of specifications like input/output voltage, current rating, and switching frequency when considering alternatives.
Features
The MP4460DQ-LF-Z is a high-frequency, synchronous, step-down switching regulator primarily used for efficient power conversion. Key features include:
1. Input Voltage Range: It operates efficiently with an input voltage range from 4.5V to 36V.
2. Output Voltage: The device supports adjustable output voltages, catering to various applications.
3. Output Current: Capable of delivering up to 1.2A of output current.
4. Switching Frequency: Features a constant switching frequency of 1.2MHz, which aids in reducing the size of external components.
5. Efficiency: High efficiency up to 95% due to the synchronous rectification design, which reduces power loss.
6. Protection Features: Includes over-current protection, short-circuit protection, and thermal shutdown to ensure device safety.
7. Soft Start: Built-in soft-start function minimizes inrush current during startup.
8. Package: Available in a compact QFN package, ideal for space-constrained applications.
These features make the MP4460DQ-LF-Z suitable for use in various applications, including consumer electronics, industrial controls, and distributed power systems.
1. Input Voltage Range: It operates efficiently with an input voltage range from 4.5V to 36V.
2. Output Voltage: The device supports adjustable output voltages, catering to various applications.
3. Output Current: Capable of delivering up to 1.2A of output current.
4. Switching Frequency: Features a constant switching frequency of 1.2MHz, which aids in reducing the size of external components.
5. Efficiency: High efficiency up to 95% due to the synchronous rectification design, which reduces power loss.
6. Protection Features: Includes over-current protection, short-circuit protection, and thermal shutdown to ensure device safety.
7. Soft Start: Built-in soft-start function minimizes inrush current during startup.
8. Package: Available in a compact QFN package, ideal for space-constrained applications.
These features make the MP4460DQ-LF-Z suitable for use in various applications, including consumer electronics, industrial controls, and distributed power systems.
Pinout
The MP4460DQ-LF-Z is a monolithic step-down switch mode converter with integrated high-side and low-side power MOSFETs. It is designed to provide a compact, efficient, and reliable solution for powering a wide range of applications.
The pin count for the MP4460DQ-LF-Z is typically 8 pins. Below are the primary functions of these pins:
1. EN (Enable): Used to enable or disable the device.
2. GND (Ground): The ground reference for the IC.
3. SW (Switch): Connects to the output inductor.
4. BST (Bootstrap): Connects a capacitor to the SW pin for high-side gate drive.
5. VIN (Input Voltage): Supplies power to the device.
6. VCC: Provides power for the internal circuitry.
7. FB (Feedback): Used to set the output voltage via a resistor divider network.
8. COMP: Connects an external compensation network to stabilize the control loop.
This device is typically used in applications such as distributed power systems, battery chargers, or any general-purpose step-down power supplies.
The pin count for the MP4460DQ-LF-Z is typically 8 pins. Below are the primary functions of these pins:
1. EN (Enable): Used to enable or disable the device.
2. GND (Ground): The ground reference for the IC.
3. SW (Switch): Connects to the output inductor.
4. BST (Bootstrap): Connects a capacitor to the SW pin for high-side gate drive.
5. VIN (Input Voltage): Supplies power to the device.
6. VCC: Provides power for the internal circuitry.
7. FB (Feedback): Used to set the output voltage via a resistor divider network.
8. COMP: Connects an external compensation network to stabilize the control loop.
This device is typically used in applications such as distributed power systems, battery chargers, or any general-purpose step-down power supplies.
Manufacturer
The MP4460DQ-LF-Z is manufactured by Monolithic Power Systems (MPS). MPS is a company that specializes in the design and production of high-performance power solutions. They focus on providing power management products for a variety of applications, including communications, computing, consumer electronics, industrial, and automotive markets. MPS is known for its emphasis on innovative design and efficiency, often integrating advanced semiconductor technology into its solutions to meet the demands of modern electronic devices.
Application
The MP4460DQ-LF-Z is a high-frequency, step-down switching regulator designed for applications requiring efficient power conversion. It is commonly used in areas such as telecommunications, networking, and data communication equipment. Additionally, it's suitable for industrial control systems, automotive electronics, and consumer electronics like LCD TVs and set-top boxes. The device's ability to provide a stable power supply with a high switching frequency makes it ideal for compact, space-constrained designs where efficiency and thermal performance are critical.
Package
The MP4460DQ-LF-Z is typically available in a 10-pin QFN (Quad Flat No-Lead) package.
