MC34903CS5EKR2

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Last Time Buy
Applications:	System Basis Chip
Current - Supply:	2mA
Voltage - Supply:	5.5 V ~ 28 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	32-BSSOP (0.295", 7.50mm Width) Exposed Pad
Supplier Device Package:	32-SOIC
Base Part Number:	MC34903

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Introduction

MC34903CS5EKR2 is a power management integrated circuit (PMIC) as a specialized product that is a three-phase synchronous buck regulator, DC/DC converter, and SMPS power supply. This IC is commonly used in a variety of applications in order to help provide the appropriate power supply to enable a pre-designated device to function appropriately. These include providing necessary power in personal computer (PC) systems, providing appropriate power to sequencers, as well as providing power for microcontroller and memory applications.

Working principle

The MC34903CS5EKR2 works mainly through the use of the three-phase synchronous buck regulator, DC/DC converter and SMPS (switch-mode power supply) which allows this power management IC to help enable a pre designated device to function appropriately in the designated setting or environment. The three-phase synchronous buck regulator includes a number of functions, such as enabling switching of the power supply on/off in order to provide a specific voltage. This also includes ramping up and down the voltage in a way that is synchronized with the clock frequency, limiting in-rush current and providing synchronization of interleaved stages in multiple outputs. This helps keep an amount of power consistent throughout the designated device.The DC/DC converter on the other hand helps the dedicated device run in an efficient manor by stepping up and stepping down the voltage from the power supply. This helps maintain an appropriate voltage for the designated device to run and properly function for best performance. The main role and purpose of the SMPS (Switch-mode power supply) on the integrated circuit is that it helps provide support in order to maintain total power under control as well as keeping losses to a minimum.

Applications

The most common applications of MC34903CS5EKR2 are found in personal computer (PC) systems, microcontrollers and memory applications, as well as providing power to sequencers. In PC systems, the MC34903CS5EKR2 helps provide the necessary power to help ensure the components of the system are all running in an appropriate and efficient way. Furthermore, since the integrated circuit provides an appropriate level of power to the PC, users are able to enjoy the system’s performance as needed.In microcontroller and memory applications, the MC34903CS5EKR2 helps provide the necessary power to help ensure the device can run without any power interruptions and provide consistent performance. Finally, the MC34903CS5EKR2 also helps provide appropriate power to sequencers and can be found in a variety of medical, automotive and industrial applications.

Conclusion

MC34903CS5EKR2 is a specialized PMIC that provides necessary power to a number of applications and devices, such as providing power to PC systems, providing power to microcontrollers and memories, as well as providing power to sequencers. This PMIC is able to accomplish these tasks by using its three-phase synchronous buck regulator, DC/DC converter and SMPS (switch-mode power supply). With such a necessary integrated circuit, users and designers are able to design and produce devices and systems that require an appropriate and consistent level of power in order to function at their best efficiency.

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