MP4570GF-P

MP4570GF-P is a frequency programmable step-down switching converter with integrated internal high-side and low side power MOSFETs. It can provide 3A continuous output current with peak current control for excellent transient response and efficiency performance. The wide 4.5V to 55V input voltage range accommodates a variety of step down applications, including those applications in industrial, PoE, automotive and printer with DC high voltage bus. The MP4570 uses peak current mode control to regulate the output voltage. The chip provides over current protection with valley current detection which is used to avoid current running way. Also, it has accurate and reliable over voltage protection, and auto recovery thermal protection. The application includes PoE input non-isolated buck, industrial power systems, printers and scanners, automotive power systems, distributed power systems.

• Wide input voltage range from 4.5V to 55V, peak current mode control
• Programmable switching frequency, stable independent on output capacitors
• Optional external soft start, OCP protection with valley current detection
• Support external SYNC clock, OVP protection, power good indication
• Current limit decreasing during output short for better thermal performance
• Thermal shutdown protection, FB current is 10nA typical at (VFB=1.07V)
• Quiescent supply current is 450µA typical at (VIN = 48V, VEN = 3.3V, TJ= +25°C)
• Shutdown supply current is 7µA typical at (VIN = 48V, VEN = 3.3V, TJ= +25°C)
• Switching frequency is 520KHz typical at (VIN = 48V, VEN = 3.3V, TJ= +25°C)
• Operating junction temperature range from -40°C to +125°C, TSSOP-20 EP package

Notes

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.