SG1843Y-883B

Voltage - Supply (Vcc/Vdd):	7.6 V ~ 30 V
Supplier Device Package:	8-CDIP
Package / Case:	8-CDIP (0.300", 7.62mm)
Operating Temperature:	-55°C ~ 125°C (TA)
Control Features:	--
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	95%
Frequency - Switching:	1Hz ~ 500kHz
Series:	Military, MIL-STD-883B
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

SG1843Y-883B is a DC-DC switching controller designed to provide improved power system efficiency and reliability. It provides an easy-to-implement input range of 3.8V to 20V, 25V transient capability, fast response, low ripple, and a wide output voltage. Its wide input voltage range and fast reaction provide a flexible solution for many applications such as motherboard voltage regulation, processor system power supplies and automotive applications.

Application Field

SG1843Y-883B is mostly used for regulation of motherboard voltage. It has a wide input voltage range so that it can accommodate a variety of input supply voltages in the range of 3.8V to 20V. This flexibility allows the unit to be used with most standard power supplies. In addition, the unit can be programmed with a voltage range of 0.8V up to 5.5V, to suit the specific requirements of the motherboard design.In processor system power supplies, SG1843Y-883B is used to regulate the voltage provided to the processor. This allows the system to maintain its designed performance, while diminishing power-failure risks. Processor system power supplies are important because they often contain power-management functions such as backward compatibility, temperature control, and protection against over-voltage conditions.In the automotive industry, SG1843Y-883B is often used in hybrid, electric, and other energy sources. The unit\'s predictable and rapid response helps improve system efficiency, reducing the power loss in switch-mode power supplies. In addition, the unit\'s high input voltage range provides a robust solution for vehicles that use many different power sources. Fluctuations in voltage can be quickly absorbed, allowing consistent output power.

Working Principle

SG1843Y-883B is a step-down switching controller and works by controlling the on/off switching of an external power switch. The internal pulse-width modulation (PWM) controller generates rectangular pulses, whose width is proportional to an internal reference voltage. This reference voltage is regulated using a non-switching feedback (NSF) loop.The PWM block compares the reference voltage to a voltage divider circuit which provides a feedback signal proportional to the output voltage. Any deviation between the reference voltage and feedback signal is adjusted by a control loop that controls the duty cycle of the pulses, this varying the current through the power switch and hence the output voltage.SG1843Y-883B also includes a number of protection functions, such as an over-temperature shutdown, input overload, and fault overload. These protection functions ensure the safety of both the regulator and the components connected to it.

Conclusion

SG1843Y-883B is a high-performance switching controller designed to optimize the efficiency and reliability of DC-DC switch mode power supplies. It is well-suited for use in a variety of applications such as mother board voltage regulation, processor system power supplies, and automotive applications. The unit\'s internal pulse-width modulation controller, wide input voltage range, fast response, and non-switching feedback loop ensure a resilient and consistent performance. SG1843Y-883B is also designed with a number of protection features, making it an ideal choice for those who need reliable and efficient DC-DC switch mode power regulation.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description