LT3503EDCB#TRPBF

Voltage - Output (Min/Fixed):	0.78V
Base Part Number:	LT3503
Supplier Device Package:	6-DFN (2x3)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	2.2MHz
Current - Output:	1A
Voltage - Output (Max):	16.2V
Series:	--
Voltage - Input (Max):	20V
Voltage - Input (Min):	3.6V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LT3503EDCB#TRPBF is an easy-to-use switching regulator that provides a simple solution for today’s power challenges. With its compact size, wide input voltage range, low quiescent current, high-efficiency switching operation, and adjustable output voltage, the LT3503EDCB#TRPBF is well-suited for a variety of applications. This article will discuss the application field and working principle of LT3503EDCB#TRPBF.

Application Field of LT3503EDCB#TRPBF

The LT3503EDCB#TRPBF switching regulator is typically used in battery powered applications that require a wide input voltage range and adjustable output voltage. It is ideal for cellular phones, PDAs, digital cameras, portable media players, hand-held medical and test & instrumentation equipment, and other embedded applications that require tight regulation and low quiescent current.Additionally, this switching regulator is suitable for use in applications with tight space constraints due to its low profile, low profile thermally enhanced package, and small size. In some applications, it can even be used to replace linear regulators with standard or thermally enhanced surface mount packages.

Working Principle of LT3503EDCB#TRPBF

The working principle of the LT3503EDCB#TRPBF switching regulator is based on the operation of a pulse width modulation (PWM) controller. The controller is a monolithic IC with an integrated PWM circuit, voltage reference and input/output control circuitry.The controller regulates the output voltage by setting the duty cycle of a fixed 200kHz switching frequency. The feedback architecture achieves tight regulation, low ripple and low noise for a wide range of input and output voltage combinations.The input voltage to the regulator can range from 2.7V to 20V. This allows for the use of a wide variety of input sources, including single-cell lithium chemistry or higher voltage sources. The input current is limited by an internal current-limit circuit.The LT3503EDCB#TRPBF switching regulator has a power switch with an adjustable current limit. This adjustable current limit is enabled by the use of an external current sense resistor that monitors the switch current.The regulator also has a clock frequency adjustment and output voltage adjustment. This allows for a wide range of adjustments to ensure the various applications are properly and efficiently regulated.

Conclusion

The LT3503EDCB#TRPBF switching regulator is an easy-to-use, compact, and efficient solution to many power needs. Its wide input voltage range and adjustable output voltage enable it to be used in a variety of battery powered applications and embedded applications with tight space constraints. Its PWM based operation, adjustable current limit and output voltage adjustment further enable it to meet the requirements of many power applications.

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