LTC1682CMS8-5#PBF

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LTC1682
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	550kHz
Current - Output:	50mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	4.4V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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In this article, we\'ll explore the application field and working principle of the LTC1682CMS8-5#PBF. We will learn how it fits into the larger category of PMIC - Voltage Regulators - DC DC Switching Regulators.

Introduction

The LTC1682CMS8-5#PBF is an integrated circuit (IC or “chip”) designed for applications requiring DC to DC switching regulators. It is one of the many varieties of PMIC (Power Management Integrated Circuit) devices that serve to provide a regulated output voltage from a power source with an unregulated or poorly regulated input voltage. This particular device is in the LTC (Linear Technology Corporation) family, and operates within an 8.5V to 40V input voltage range. It provides a regulated output voltage of 12V.

Application Field & Working Principle

At its core, the LTC1682CMS8-5#PBF is a DC to DC buck (step-down) switching regulator. As such, it is suited to applications where: 1) A regulated 12V output voltage is needed, and 2) The input voltage is within an 8.5V to 40V range.In terms of its working principle, the LTC1682CMS8-5#PBF employs a specific design that allows it to efficiently convert DC input voltage into the desired regulated output voltage by pulse-width modulation control. Specifically, the chip contains both an active power feedback loop, and a voltage reference. The feedback loop measures the magnitude of the output voltage and then sends that information back to the voltage reference. The voltage reference then adjusts the width of the pulses accordingly, which in turn adjusts the output voltage.In addition, the integrated circuit contains elements such as input and output current limiters, as well as over-temperature protection on the output stage. This ensures that, even under adverse conditions, the system is always operated within safe, specified limits.

Conclusion

In conclusion, we have learned about the application field, and working principle of the LTC1682CMS8-5#PBF DC to DC buck switching regulator. We have learned that it is well suited to applications requiring a regulated 12V output voltage, when the input voltage is within an 8.5V to 40V range. We have also learned that this particular integrated circuit employs a specific pulse-width modulation control design and is self-protected against abnormal conditions. Thus, we can see that the LTC1682CMS8-5#PBF functions as a reliable and efficient DC to DC switching regulator, and fits squarely within the larger PMIC - Voltage Regulators - DC DC Switching Regulator category.

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