LTC3830ES8#PBF

Frequency - Switching:	200kHz
Base Part Number:	LTC3830
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	95%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 8 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

The LTC3830ES8#PBF is a low-voltage, high-efficiency, non-sync DC/DC buck controller intended for synchronous step-down applications. It has been designed to provide a programmable switching frequency of up to 1MHz, output voltage tracking, and instantaneous power-on reset support. As part of a complete DC-DC converter solution, the LTC3830ES8#PBF offers excellent power conversion efficiency which is critical for many applications today. It is well suited for a variety of applications, ranging from general purpose power supplies to LED driver applications and automotive power systems.

Application Fields

The LTC3830ES8#PBF can be used in a wide variety of applications such as automotive power systems, lighting systems, consumer electronics, and industrial control systems. It is suitable for operating from 4.5V to 16V power supply voltages, and can handle up to 5A of output current. The wide input voltage and input current rating, combined with the onboard power conversion efficiency, makes this DC/DC buck converter ideal for many different types of systems.The LTC3830ES8#PBF can also be used for LED driver applications. This controller is capable of providing efficient regulation of LED strings with fewer components, making it a cost effective solution. With adjustable switching frequency and active current limit protection, the LTC3830ES8#PBF provides reliable protection against overload faults, current overloads, and input or output voltage fault conditions.It is also well suited for medical and industrial systems. Using a combination of the integrated high voltage level shifter and a comparator, the LTC3830ES8#PBF enables a wide range of input voltages, up to 16V, and can be used to provide a regulated output voltage for various types of systems. Additionally, the LTC3830ES8#PBF provides adjustable output voltage tracking, allowing the output voltage to be set to the required operating level for the system.

Working Principle

The LTC3830ES8#PBF is an integrated DC-DC buck converter with an adjustable switching frequency of up to 1MHz. It is a synchronous switching controller that is designed to regulate the output voltage at a set level. The LTC3830ES8#PBF senses the voltage across the output inductor and adjusts the switching frequency in order to maintain the desired output voltage. It also offers adjustable current-limit protection and adjustable soft-start, both of which can be used to protect the system and provide a smoother power-up sequence.The LTC3830ES8#PBF includes a clamping circuit with a shunt capacitor and a diode to protect the system from over-voltage and under-voltage conditions. This clamping circuit ensures that the input voltage does not exceed a safe limit.The LTC3830ES8#PBF also includes a wide range of protections, such as over-temperature, over-current, and short-circuit protections for added system safety and reliability.

Conclusion

The LTC3830ES8#PBF is a low-voltage, high-efficiency, non-sync DC/DC buck controller intended for synchronous step-down applications. It is well suited for a variety of applications, ranging from general purpose power supplies to LED driver applications and automotive power systems. The LTC3830ES8#PBF is designed to provide adjustable switching frequency of up to 1MHz, output voltage tracking, and instantaneous power-on reset support, while also providing high power conversion efficiency. It also includes a high voltage level shifter, a comparator, and a wide range of protection features for added system safety and reliability.

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