SG3842M

SG3842M PWM Controller IC - Microsemi Corporation

The SG3842M is a high-performance current-mode PWM controller designed for isolated flyback topology power supply applications. Manufactured by Microsemi Corporation, this IC delivers reliable frequency control and current limiting protection for demanding power management designs across aerospace, automotive, industrial, medical, and telecom applications.

Key Features & Benefits

• Wide Supply Voltage Range: Operates from 10V to 30V with 16V start-up voltage
• High Switching Frequency: 100Hz to 500kHz for flexible design optimization
• 95% Maximum Duty Cycle: Enables efficient power conversion
• Integrated Protection: Current limiting fault protection safeguards your circuit
• Isolated Output: Ensures safe operation in flyback configurations
• Through-Hole Mounting: Standard 8-DIP package for reliable board assembly
• RoHS Compliant: Meets environmental and regulatory standards

Typical Applications

Ideal for offline flyback power supplies, AC-DC converters, battery chargers, auxiliary power supplies, and industrial control systems requiring long lifecycle components with full traceability.

Complete Technical Specifications

Product attributes	Property Value
Manufacturer	Microsemi Corporation
Product Series
Packaging	Tube |
Output Isolation	Isolated
Internal Switch(s)	No
Voltage - Breakdown	-
Topology	Flyback
Voltage - Start Up	16 V
Voltage - Supply (Vcc/Vdd)	10V ~ 30V
Duty Cycle	95%
Frequency - Switching	100Hz ~ 500kHz
Power (Watts)	-
Fault Protection	Current Limiting
Control Features	Frequency Control
Operating Temperature	0°C ~ 70°C (TA)
Grade	-
Qualification	-
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Supplier Device Package	8-PDIP
ROHS

Authorized Distributor: We provide genuine Microsemi components with full traceability, manufacturer documentation, and long lifecycle support for critical design-in applications.