仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4V |
| Voltage-Input(Max) | 30V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 28.5V |
| Current-Output | 2A |
| Frequency-Switching | 410kHz |
| SynchronousRectifier | Yes |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SOT-23-8 Thin, TSOT-23-8 |
概要
Description
The MP9942GJ-Z is a high-efficiency, synchronous, step-down DC-DC converter designed for low voltage applications. It converts a higher input voltage to a lower output voltage with high efficiency, making it suitable for battery-powered devices and power management in various electronic systems. The device features a wide input voltage range, typically from 2.7V to 16V, and can deliver an output current of up to 4A.
The MP9942GJ-Z integrates both high-side and low-side MOSFETs to minimize external components and reduce overall system cost. It offers key features such as adjustable output voltage, fast transient response, low quiescent current, and protection mechanisms including over-current and thermal shutdown. The converter operates with a constant switching frequency, which simplifies the design of the external inductor and capacitors, ensuring stable and efficient performance across load conditions.
Compact in size and available in a QFN package, the MP9942GJ-Z is ideal for compact, high-performance applications such as portable electronics, telecommunications equipment, and industrial products.
The MP9942GJ-Z integrates both high-side and low-side MOSFETs to minimize external components and reduce overall system cost. It offers key features such as adjustable output voltage, fast transient response, low quiescent current, and protection mechanisms including over-current and thermal shutdown. The converter operates with a constant switching frequency, which simplifies the design of the external inductor and capacitors, ensuring stable and efficient performance across load conditions.
Compact in size and available in a QFN package, the MP9942GJ-Z is ideal for compact, high-performance applications such as portable electronics, telecommunications equipment, and industrial products.
Equivalent
The MP9942GJ-Z is a monolithic step-down switch mode converter with built-in internal power MOSFET. Equivalent products to consider might include the Texas Instruments LM3671, Analog Devices ADP2301, and Microchip's MCP16301. These alternatives offer similar step-down conversion capabilities and are suitable for various power management applications. However, always check the specific electrical characteristics and pin compatibility when selecting a direct equivalent.
Features
The MP9942GJ-Z is a high-efficiency, synchronous step-down converter designed for applications that require compact size and high performance. It operates with an input voltage range of 4.5V to 36V and can deliver up to 2A of continuous output current, making it suitable for a variety of power supply applications. Key features include:
1. Efficiency: Achieves high efficiency through synchronous rectification.
2. Output Voltage: Adjustable output voltage range from 0.8V to 15V.
3. Switching Frequency: Operates with a 500kHz fixed switching frequency.
4. Protection: Includes features such as over-current protection, over-temperature protection, and under-voltage lockout.
5. Soft Start: Built-in soft-start feature to prevent inrush current during startup.
6. Thermal Performance: Enhanced thermal performance due to its compact design, allowing operation in high-temperature environments.
7. Package: Available in a small TSOT23-8 package, making it ideal for space-constrained applications.
The MP9942GJ-Z is highly suitable for applications in consumer electronics, industrial power supplies, and distributed power systems.
1. Efficiency: Achieves high efficiency through synchronous rectification.
2. Output Voltage: Adjustable output voltage range from 0.8V to 15V.
3. Switching Frequency: Operates with a 500kHz fixed switching frequency.
4. Protection: Includes features such as over-current protection, over-temperature protection, and under-voltage lockout.
5. Soft Start: Built-in soft-start feature to prevent inrush current during startup.
6. Thermal Performance: Enhanced thermal performance due to its compact design, allowing operation in high-temperature environments.
7. Package: Available in a small TSOT23-8 package, making it ideal for space-constrained applications.
The MP9942GJ-Z is highly suitable for applications in consumer electronics, industrial power supplies, and distributed power systems.
Pinout
The MP9942GJ-Z is a DC-DC buck converter IC. It typically comes in a small 8-pin TSOT-23 package. Here are the pin functions:
1. VIN: Input supply voltage.
2. SW: Switching node, connects to the inductor.
3. EN: Enable pin, used to enable or disable the IC.
4. COMP: Compensation input for stability.
5. FB: Feedback input, used to set the output voltage.
6. GND: Ground connection.
7. BST: Bootstrap pin for high-side gate driver.
8. PG: Power good indicator.
These pins are used to configure the IC to efficiently convert input power to a lower output voltage, making it suitable for power management in various electronic devices.
1. VIN: Input supply voltage.
2. SW: Switching node, connects to the inductor.
3. EN: Enable pin, used to enable or disable the IC.
4. COMP: Compensation input for stability.
5. FB: Feedback input, used to set the output voltage.
6. GND: Ground connection.
7. BST: Bootstrap pin for high-side gate driver.
8. PG: Power good indicator.
These pins are used to configure the IC to efficiently convert input power to a lower output voltage, making it suitable for power management in various electronic devices.
Manufacturer
The MP9942GJ-Z is manufactured by Monolithic Power Systems, Inc. (MPS). MPS is a semiconductor company that specializes in designing, developing, and manufacturing integrated power solutions. They focus on high-performance analog and mixed-signal power management components, which are used in a wide range of electronic applications. MPS's products are utilized in sectors such as consumer electronics, telecommunications, computing, industrial applications, automotive, and more. The company is known for its emphasis on high efficiency and compact design, catering to the growing demand for energy-efficient and space-saving solutions in modern electronics.
Application
The MP9942GJ-Z is a high-frequency, synchronous, step-down switching converter IC. Its application areas include powering processors, FPGAs, and ASICs in telecommunications, networking, and data center equipment due to its efficiency and compact design. It's also used in consumer electronics, industrial automation, and automotive systems for power management. The device is suitable for applications requiring high power density and low power loss, making it ideal for modern electronic devices with strict power requirements.
Package
The MP9942GJ-Z is a DC-DC buck converter typically available in a QFN (Quad Flat No-leads) package type. This package is compact and suitable for high-density applications, providing efficient thermal performance and reduced package size.
