SG2845M

$3.81

Description：IC REG CTRLR FLYBACK 8DIP
Series：-
Mfr：Microsemi Corporation
Package：Tube

SKU:5a674a69b5f6 Category: DC DC Switching Controllers Brand: Microsemi Corporation

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR FLYBACK 8DIP
Series：-
Mfr：Microsemi Corporation
Package：Tube
Output Type：Transistor Driver
Function：Step-Up/Step-Down
Output Configuration：Positive, Isolation Capable
Topology：Flyback
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：7.6V ~ 30V
Frequency - Switching：1Hz ~ 500kHz
Duty Cycle (Max)：48%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：-
Operating Temperature：-25°C ~ 85°C (TA)
Mounting Type：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：8-DIP
Grade：-
Qualification：-

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SG2845M

Overview

The SG2845M is a current-mode PWM switching controller manufactured by Microsemi. It operates with a maximum switching frequency of 500 kHz and supports an input voltage range from 8.2 V to 30 V. The device features a nominal output current capability of 1 A and includes precision duty cycle limiting for applications requiring less than 50% duty cycle. It is housed in a DIP-8 package and is designed for use in flyback, boost, and buck converter topologies.

Feature Summary

Implements current-mode pulse width modulation control technique
Provides precision duty cycle limiting for sub-50% operation
Supports synchronization of multiple controllers
Features high peak output drive current

Applications

Flyback power supply designs
Boost converter circuits
Buck converter architectures
Isolated DC-DC conversion systems

Procurement Notes

Verify the specific suffix 'M' indicates the correct package type and temperature grade as defined in official Microchip documentation. Confirm that the component meets all required electrical specifications for the target application before integration. Check for any lead-free or RoHS compliance status updates provided by the manufacturer.

Selection Notes

Select the SG2845M when current-mode control is preferred for improved transient response and inherent line feed-forward capabilities. Ensure the operating input voltage remains within the specified 8.2 V to 30 V range. Consider the DIP-8 package constraints for thermal management and board layout requirements in the final design.

Part Context

This component belongs to the SG1845/SG2845 family of current-mode PWM controllers. These devices are widely used in offline and online switch-mode power supplies. The SG2845M variant specifically addresses commercial temperature ranges and utilizes a standard dual-in-line package format suitable through-hole mounting applications.