The " MP1584EN-LF-Z " is a specific model of a buck converter from Monolithic Power Systems (MPS). It is part of their DC-DC step-down voltage regulator family. The "LF-Z" suffix typically denotes that it is lead-free and RoHS-compliant, which means it's environmentally friendly. Below is a detailed explanation of the pin functions and the packaging of the MP1584EN-LF-Z, including the full pinout for all pins.
Package Type
Package Type: The MP1584EN-LF-Z comes in a SOP-8 package (Small Outline Package with 8 pins). It is a standard surface-mount package widely used in various power management and other small electronic devices.Pinout (8 Pins)
Here is a comprehensive list of all the 8 pins in the SOP-8 package and their specific functions.
Pin Number Pin Name Function Description 1 VIN Input Voltage Pin: Connect to the input power supply, typically 4.5V to 28V. This pin supplies power to the internal circuitry of the MP1584. 2 GND Ground Pin: Connect to the ground (0V) of the circuit to complete the circuit for current flow. 3 SW Switch Pin: Connects to the external inductor. This pin is the switching node that varies in voltage as the device operates. 4 FB Feedback Pin: This pin is used to set the output voltage via an external resistor divider. It monitors the output voltage to regulate it. 5 EN Enable Pin: Used to enable or disable the device. A logic high level (typically 2V) enables the regulator, while a low level (below 0.3V) disables it. 6 VOUT Output Voltage Pin: This pin provides the regulated output voltage, which is adjustable via the feedback pin. 7 NC No Connect: This pin is not internally connected to anything. It is typically left unconnected in the design. 8 PG Power Good Pin: This is a logic-level output pin that indicates whether the output voltage is within a specified range. When the output voltage is correct, this pin is high.Pin Functionality FAQ
What is the input voltage range for MP1584EN-LF-Z? The input voltage range for MP1584EN-LF-Z is between 4.5V and 28V. How do I enable the MP1584EN-LF-Z? To enable the MP1584EN-LF-Z, apply a voltage of 2V or higher to the EN pin. A voltage below 0.3V disables the device. What is the purpose of the feedback pin (FB)? The feedback pin (FB) is used to set the output voltage by connecting an external resistor divider. It monitors the output voltage for regulation. How does the switch pin (SW) work in the circuit? The SW pin is the switching node. It connects to the external inductor and switches between high and low voltages to regulate the output voltage. Can the MP1584EN-LF-Z operate without an external inductor? No, the MP1584EN-LF-Z requires an external inductor to store energy and smooth out the voltage switching. What is the ground (GND) pin used for? The GND pin is used to connect to the ground of the circuit. It is essential for the current to flow through the regulator circuit. What is the power good (PG) pin used for? The PG pin is a logic-level output that indicates whether the output voltage is within a specified range. When the voltage is correct, the PG pin is high. How can I adjust the output voltage of the MP1584EN-LF-Z? The output voltage can be adjusted by using an external resistor divider connected to the feedback (FB) pin. What happens if I connect the EN pin to a low voltage? If the EN pin is connected to a low voltage (below 0.3V), the MP1584EN-LF-Z will be disabled and not regulate the output voltage.What is the output voltage range for the MP1584EN-LF-Z?
The output voltage is adjustable from 0.8V to 15V, depending on the resistor divider configuration.What is the maximum output current of the MP1584EN-LF-Z?
The MP1584EN-LF-Z can provide up to 3A of output current, depending on the input voltage and output conditions.Can the MP1584EN-LF-Z be used for high-power applications?
The MP1584EN-LF-Z is suitable for medium-power applications, with a maximum output current of 3A. For higher power, a different part may be necessary.What is the switching frequency of the MP1584EN-LF-Z?
The typical switching frequency is 340kHz.Can I use the MP1584EN-LF-Z with any type of inductor?
No, it is recommended to use a compatible inductor with a value in the range of 4.7μH to 22μH for optimal performance.What is the recommended input capacitor for the MP1584EN-LF-Z?
It is recommended to use a 100μF ceramic or electrolytic capacitor at the input for stable operation.What is the recommended output capacitor for the MP1584EN-LF-Z?
The recommended output capacitor is 100μF for stable regulation.How do I calculate the output voltage using the feedback pin (FB)?
The output voltage can be calculated using the formula: Vout = 0.8V × (1 + R1/R2), where R1 and R2 are the resistors in the feedback divider.Can I use the MP1584EN-LF-Z for 24V systems?
Yes, the MP1584EN-LF-Z can accept input voltages up to 28V, so it can be used in 24V systems.What is the typical efficiency of the MP1584EN-LF-Z?
The typical efficiency of the MP1584EN-LF-Z is around 90%, depending on input voltage and load conditions.Can I use the MP1584EN-LF-Z in a 12V to 5V converter application?
Yes, the MP1584EN-LF-Z is suitable for step-down applications, such as converting 12V to 5V, with an adjustable output voltage.This comprehensive guide provides you with the necessary information on the MP1584EN-LF-Z’s pinout and the key FAQs about this DC-DC buck converter. If you need any further details, feel free to ask!
