MP1593DN-LF-Z
| Parameters | |
|---|---|
| Base Product Number | MP1593 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
| Series | - |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Mfr | Monolithic Power Systems Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Voltage - Input (Max) | 28V |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Current - Output | 3A |
| Supplier Device Package | 8-SOICE |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 385kHz |
| Synchronous Rectifier | Yes |
| Voltage - Output (Min/Fixed) | 1.22V |
| Voltage - Output (Max) | 25.2V |
| Voltage - Input (Min) | 4.75V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
MP1593DN-LF-Z Buck Switching Regulator IC Positive Adjustable 1.22V 1 Output 3A 8-SOIC
The MP1593DN-LF-Z is a high-efficiency, monolithic step-down switching regulator from Monolithic Power Systems (MPS), housed in a thermally enhanced 8-pin SOIC package with an exposed pad. It integrates a 100mΩ internal power MOSFET and supports a wide input voltage range from 4.75V to 28V, delivering up to 3A of continuous output current with excellent load and line regulation. Operating at a fixed 385kHz switching frequency, the device achieves efficiency levels up to 95% while maintaining stable performance with low-ESR ceramic output capacitors. Additional features include programmable soft-start, cycle-by-cycle overcurrent protection, thermal shutdown, and under-voltage lockout, making it a robust and compact power management solution for space-constrained designs.
Applications
The MP1593DN-LF-Z is widely employed in distributed power systems, industrial control equipment, and automotive electronics where efficient voltage step-down is required. It serves as an ideal power supply solution for set-top boxes, LCD monitors, and CPE equipment, as well as battery-powered portable devices and LED driver circuits. The device's wide input range and high current capability also make it suitable for powering FPGAs, microprocessors, and communication modules in embedded systems and networking hardware.
Frequently Asked Questions
Q: What is the key advantage of using the MP1593DN-LF-Z over non-synchronous buck converters?
A: The MP1593DN-LF-Z utilizes synchronous rectification with an integrated low-side switch, delivering higher efficiency (up to 95%) and lower heat generation compared to diode-based non-synchronous alternatives, which reduces thermal management requirements and improves overall system reliability.
Q: What layout considerations should be observed when designing with this device?
A: Designers should place input ceramic capacitors close to the VIN and GND pins, keep the switching node trace short and wide, and ensure the exposed pad is properly soldered to a large copper ground plane for optimal thermal dissipation and EMI suppression.
Alternative step-down regulators
● MP1583DN-LF-Z: A 3A, 385kHz synchronous buck regulator from MPS with a 23V maximum input, offering comparable performance in an identical SOIC-8 EP footprint for slightly lower voltage applications.
● MP1584EN-LF: A 3A, 1.5MHz non-synchronous step-down converter from MPS supporting 28V input, enabling significantly smaller inductor sizes through higher switching frequency operation.
● LM2596: A widely available 3A, 150kHz non-synchronous step-down regulator from Texas Instruments featuring a simpler design and lower cost, though with reduced efficiency compared to synchronous solutions.
● MP2315: A compact synchronous buck converter from MPS with similar 3A output capability and integrated switches, optimized for newer designs requiring enhanced light-load efficiency.
