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Product Detailed Parameters
- Description：ACDC PSR SWITCHER SO-7 TR 4K
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Isolation：Non-Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：700V
- Topology：Buck, Buck-Boost
- Voltage - Start Up：-
- Voltage - Supply (Vcc/Vdd)：85V ~ 277VAC
- Duty Cycle：68%
- Frequency - Switching：33kHz
- Fault Protection：Over Load, Over Temperature, Over Voltage, Short Circuit
- Control Features：Soft Start
- Operating Temperature：-40°C ~ 125°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 AP3927DS7-13 is an AC/DC power switcher from Diodes Incorporated, designed for non-isolated applications. It utilizes primary side regulation (PSR) to eliminate the need for optocouplers and secondary feedback components. The device operates within an input voltage range of 85 VAC to 265 VAC and provides a regulated output current capability of up to 350 mA. Packaged in a compact SO-7 form factor, it is intended for cost-sensitive power supply designs.
Feature Summary
- Primary side regulation architecture removes the requirement for optocouplers and auxiliary windings
- Integrated high-voltage startup circuit enables direct connection to rectified mains voltage
- Built-in protection mechanisms include cycle-by-cycle current limiting and thermal shutdown
Applications
- Auxiliary power supplies for IoT devices
- Non-isolated power stages for home appliances
- Low-power adapter designs requiring minimal component count
Procurement Notes
Verify the specific suffix DS7-13 against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Ensure that the ordering documentation matches the required quantity multiples and packaging standards defined by Diodes Incorporated for this part number.
Selection Notes
Select this component for designs prioritizing low bill-of-materials cost and reduced board space through PSR topology. Confirm that the target application does not require galvanic isolation or tight secondary-side voltage regulation, as these features are not supported by the primary side control method.
Part Context
This part belongs to the AP3927 family of AC/DC converters. It shares functional similarities with other primary-side regulated switchers but is distinct in its specific pinout configuration and internal reference parameters defined for the SO-7 package variant.
Replacement Considerations
Consult official substitution guides for compatible PSR controllers. Verify pin compatibility and electrical ratings before replacing with alternative manufacturers' parts.
