SG2845DM

$4.73

Description：IC REG CTRLR FLYBACK 8SOIC
Series：-
Mfr：Microchip Technology
Package：Bulk

SKU:70ffc083ecc6 Category: DC DC Switching Controllers Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR FLYBACK 8SOIC
Series：-
Mfr：Microchip Technology
Package：Bulk
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：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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SG2845DM

Overview

The SG2845DM is a flyback switching controller IC from Microchip Technology, designed for high-reliability isolated power supplies. It operates within a supply voltage range of 7.6V to 30V and supports a switching frequency up to 500 kHz. The device features a maximum duty cycle of 48% and includes a synchronous rectifier driver. It provides one positive, isolated output via a transistor driver stage. The component is housed in an 8-SOIC package (0.154 inch width) and functions reliably across a temperature range of -25°C to +85°C.

Feature Summary

Supports synchronous rectification for improved efficiency in isolated topologies
Provides positive, isolated output configuration suitable for flyback applications
Integrates current-mode control architecture for enhanced line and load regulation

Applications

Isolated DC-DC converter designs
Flyback power supply implementations
High-reliability industrial power systems

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official documentation before procurement. Confirm that the selected part matches the required thermal and electrical specifications for the target application environment. Ensure compliance with RoHS3 standards if environmental regulations apply to the end product.

Selection Notes

Select this component for applications requiring a dedicated flyback controller with integrated synchronous rectification capabilities. Consider the 8-SOIC package constraints and the specified operating temperature range when designing the thermal management strategy. Evaluate the 48% maximum duty cycle limit to ensure it meets the input-to-output voltage conversion requirements of the design.

Part Context

The SG2845DM belongs to the SG2845 family of current-mode PWM controllers manufactured by Microchip Technology. These devices are engineered for off-line fixed-frequency switching power supplies, offering pulse-by-pulse current limiting and inherent protection for the power supply output switch. The family utilizes a bandgap reference trimmed for accuracy over temperature variations.