SG2842DM

Microsemi SG2842DM Flyback Switching Controller IC

The SG2842DM from Microsemi Corporation is a high-performance isolated flyback switching controller designed for offline AC/DC power supply applications. This versatile IC operates across a wide switching frequency range of 100Hz to 500kHz, making it suitable for various power conversion topologies requiring precise frequency control and current limiting protection.

Key Features & Benefits

• Wide Operating Range: 10V to 30V supply voltage with 16V start-up voltage
• Flexible Frequency Control: 100Hz to 500kHz switching frequency for optimized efficiency
• High Duty Cycle: Up to 95% for maximum power transfer
• Built-in Protection: Current limiting fault protection ensures safe operation
• Isolated Topology: Flyback configuration for galvanic isolation
• Compact Package: Surface mount 8-SOIC (3.90mm width) for space-efficient designs
• Industrial Temperature Range: -25°C to 85°C ambient operation
• RoHS Compliant: Environmentally friendly, lead-free construction

Typical Applications

• Offline AC/DC power supplies
• Battery chargers and adapters
• Auxiliary power supplies
• Industrial control systems
• Telecommunications equipment
• Consumer electronics power management

Complete Technical Specifications

Product attributes	Property Value
Manufacturer	Microsemi Corporation
Product Series
Packaging	Bulk |
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	-25°C ~ 85°C (TA)
Grade	-
Qualification	-
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
ROHS

For detailed design guidelines, application notes, and reference designs, please refer to the manufacturer's datasheet and technical documentation.