SG1843Y-883B

Description：IC REG CTRLR BUCK 8CDIP
Series：-
Mfr：Microchip Technology
Package：Tube

SKU:5c563954c843 Category: DC DC Switching Controllers Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

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

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SG1843Y-883B

Overview

The SG1843Y-883B is a high-reliability, current mode PWM controller designed for isolated switching regulators. It supports flyback topologies with a single output and operates within a frequency range of 100 Hz to 500 kHz. The device features a maximum duty cycle of 100% and offers rise/fall times of 50 ns. It functions in an environment from -55°C to +125°C, drawing 11 mA of operating supply current. Output capabilities include 200 mA or 1 A via a totem pole configuration. Packaged in an 8-CDIP through-hole format, it provides isolated regulation suitable for demanding applications.

Feature Summary

Current mode PWM control architecture for precise regulation
High-reliability design certified for harsh environments
Isolated switching regulator capability with wide temperature tolerance

Applications

Military aerospace power systems
Industrial isolated DC-DC conversion
High-reliability off-line AC/DC converters

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to ensure compliance with required reliability standards. Confirm that the component meets all necessary environmental certifications for the intended deployment. Cross-reference the ordering information with the latest datasheet revisions to avoid discrepancies in specifications or package details during acquisition.

Selection Notes

Select this component when high-reliability isolated switching is required for critical systems. Ensure the application demands current mode PWM control and can accommodate the specified operating temperature range. Verify that the through-hole CDIP package fits the mechanical constraints. Confirm compatibility with the required flyback topology and output current specifications before integration into the design.

Part Context

This part belongs to the SG1843 series of current mode PWM controllers manufactured by Microchip Technology. It is engineered for high-reliability applications, often associated with military or aerospace standards. The series provides robust isolated switching regulation, distinguishing itself from standard commercial counterparts through enhanced durability and performance under extreme conditions.