MCP19117T-E/MQ

Voltage - Supply (Vcc/Vdd):	4.5 V ~ 42 V
Supplier Device Package:	28-QFN (5x5)
Package / Case:	28-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	EN
Serial Interfaces:	I²C
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Frequency - Switching:	31.25kHz ~ 2MHz
Series:	Automotive, AEC-Q100
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Cuk, Flyback, SEPIC
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Controllers

MCP19117T-E/MQ is an advanced, high-efficiency, current-mode switching regulator system-on-a-chip controller with an integrated MOSFET designed to reduce component count, board space, and overall system cost. It enables fast, efficient switching and superior transient response compared to linear regulators. The chip is specifically designed to control and regulate power output for DC/DC converters.

Application Field

MCP19117T-E/MQ can be used in a variety of applications, from portable and consumer electronics to industrial and automotive applications. It has been used in applications such as notebooks and other portable electronics, consumer electronics, medical equipment, VR/AR systems, automotive infotainment and augmented reality, battery charging, and communications systems.

Features

MCP19117T-E/MQ offers many features that enable robust and reliable operation. It allows design flexibility with its adjustable maximum duty cycle, built-in overcurrent and overvoltage protection, adjustable soft-start and tracking, adjustable switching frequency, and configurable dead-time and dead-time control. It also allows for a high-efficiency topology as well as simplified design due to single-cycle current-mode design.

Working Principle

MCP19117T-E/MQ is a current-mode switching regulator, meaning it is controlled by changing the current flowing through the output, instead of controlling the output voltage directly. This is accomplished by controlling a pulse-width-modulated (PWM) signal sent to the MOSFET. The PWM signal changes the “on” and “off” times for the MOSFET, allowing for changes in the output voltage. The voltage is then regulated by adjusting the width of the pulses.The MCP19117T-E/MQ is designed to operate at high switching frequencies, typically up to 1 MHz, allowing for high efficiency and fast transient response. It uses Multi-cycle Conduction Mode (MCM) architecture to reduce the amount of energy stored in the inductor, providing superior transient response and efficient operation. The controller also has a number of safety features, including adjustable input and output voltage lockout, adjustable soft-start and shutdown, programmable current limit, and improved EMI reduction.

Conclusion

The MCP19117T-E/MQ is an ideal solution for modern DC/DC converters. With its ability to deliver fast, efficient switching and superior transient response, as well as its safety features, it provides an ideal solution for a variety of applications. Thanks to its single-cycle current-mode design, the chip is easy to configure and integrate into system designs.

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