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Product Detailed Parameters
- Description：IC OFFLINE SWITCH FLYBACK 7SO
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Isolation：Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：650V
- Topology：Flyback
- Voltage - Start Up：16 V
- Voltage - Supply (Vcc/Vdd)：10V ~ 28V
- Duty Cycle：-
- Frequency - Switching：-
- Fault Protection：Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
- Control Features：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Package / Case：8-SOIC (0.154", 3.90mm Width), 7 Leads
- Supplier Device Package：7-SO
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：-
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Overview
The AP39811BS7-13 is an AC/DC converter IC from Diodes Incorporated, designed for flyback topology applications. It features a 650V breakdown voltage rating and operates within a supply voltage range of 10V to 28V, with a startup voltage of 16V. The device integrates a primary-side control mechanism to eliminate the need for opto-couplers and includes a built-in power MOSFET. It supports DCM operation and offers isolated output. The component is housed in a SO-7 package, suitable for surface mount installation, and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Primary-side control architecture eliminates the requirement for opto-couplers
- Integrated 650V power MOSFET for compact design
- Supports flyback topology in Discontinuous Conduction Mode (DCM)
- Provides isolated output capability
Applications
- Offline flyback power supplies
- AC/DC conversion systems requiring isolation
- Power management units eliminating opto-coupler usage
Procurement Notes
Verify the exact part number suffix against official Diodes Incorporated documentation, as variations such as AP3981BS7-13 may exist. Confirm RoHS compliance status and humidity sensitivity classification prior to ordering. Ensure the SO-7 package type matches your PCB footprint requirements. Cross-reference datasheet revisions to confirm electrical specifications remain unchanged for this specific batch.
Selection Notes
Select this component for designs requiring integrated high-voltage switching without external opto-isolation. The 650V rating suits standard mains voltage applications. Verify that the 10V to 28V supply range aligns with your system's operating conditions. Consider the SO-7 package constraints for thermal management and board space. Ensure compatibility with DCM operation requirements for your specific load profile.
Part Context
This component belongs to the AP3981 series of offline switchers by Diodes Incorporated. It is categorized under PMIC - Power Management ICs and specifically AC/DC Converters. The series is designed for cost-effective, high-reliability power solutions using primary-side regulation techniques.
Replacement Considerations
Public confirmed substitute part numbers include AP3981B2S7-13 and AP3987CTS7-13. Verify pinout and electrical specification compatibility before substitution.
