MP4568
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Description
The MP4568 is a high-frequency, step-down, switching regulator with integrated high-side/low-side, high-voltage power MOSFETs. It provides a highly efficient output of up to 100mA. 60V rated MOSFETs and 4.5V to 45V operation range accommodates a variety of step-down applications in automotive input environment. A 5μA shutdown mode quiescent current allows use in battery-powered applications. It allows for high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driver losses. The switching frequency during start-up and short circuit also can be scaled down to helps prevent inductor current runaway. Thermal shutdown provides reliable, fault-tolerant operation. The MP4568 is available in a 3mmx3mm QFN10 package.
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Features & Benefits
- 20μA Quiescent Current
- Wide 4.5V to 45V Operating Range with 50V Input OVP
- 60V Integrated MOSFETs with 0.7Ω and 2.25Ω Ron
- Programmable Switching Frequency
- Stable with Ceramic Output Capacitors
- Low Output Ripple
- Programmable Soft-Start
- Adjustable Input UVLO Hysteresis
- Precision Peak Current Limit without Current-Sensing Resistor
- Programmable Peak Current Limit
- >90% Efficiency at 10V VIN to 5V VOUT/2mA
- 1.0V Feedback Reference Voltage
- Low Shutdown Mode Current: <5μA
- 3mmx3mm QFN10 Package

Active Part Numbers:
MP4568GQ-P MP4568GQ-Z
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP4568 Resources
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UNDERSTANDING DATASHEET THERMAL PARAMETERS AND IC JUNCTION TEMPERATURESARTICLEThere is much confusion regarding how to make meaningful design decisions when converting a datasheet’s thermal resistance parameters. This introductory article will help today’s hardware engineers understand how to decipher the thermal parameters found in datasheets — including whether to choose theta vs. psi, how to calculate these values, and most importantly, how to apply the...
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QUICK TIPS TO DIAGNOSE AND STABILIZE AN UNSTABLE SWITCHING POWER SUPPLYARTICLEAn unstable power supply can cause severe system issues, such as audible noise from the passive components, unexpected jittering in the switching frequency, extreme oscillations on the output voltage during load transient events, and failures in the semiconductor switches. While there are various reasons for instability, an un-tuned compensation network accounts for majority of instability issues ...
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USING EXTERNAL KNOBS TO IMPROVE TRANSIENT PERFORMANCE OF BUCK REGULATORS WITH AN INTEGRATED COMPENSATION NETWORKARTICLEThe high power density requirement and board-level space constraints in modern applications — such as lighting, ADAS, and USB — call for higher integration in buck regulators. There is a trend to integrate MOSFETs and compensation networks inside the chip. This integration of the compensation network’s passive components saves cost, board space, and design iterations. However, it...
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