Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT25.pngNRND = Not Recommended for New Design
Secondary Side Synchronous Rectification Controller
Contact Sales
Log in or register to manage email notifications about changes to datasheets or PCNs for this part.
APR343 is a secondary side MOSFET driver for synchronous rectification in DCM operation, which integrates the output voltage detection function for primary side control system.
The synchronous rectification can effectively reduce the secondary side rectifier power dissipation and provide high performance solution. By sensing MOSFET drain-to-source voltage, APR343 can output ideal drive signal with less external components. It can provide high performance solution for 5V output voltage application.
Same as AP4341, APR343 detects the output voltage and provides a periodical signal when the output voltage is lower than a certain threshold. By fast response to secondary side voltage, APR343 can effectively improve the transient performance of primary side control system.
The APR343 is available in SOT25 package.
| Internal MOSFETDrain Rating (V) | 50 |
|---|---|
| No-loadTriggerVoltage (V) | 5.3 |
| Min On-Time (ns) | 1800 |
| OperatingCurrent (µA) | 100 |
| Internal MOSFET Rds(on)(MΩ) | External |
| Turn-OffDelay (ns) | 100 |
| Turn-OffThresholdVoltage (mV) | -12.5 |
| VCC Maximum Rating | 6 |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2642 | 2023-09-05 | 2024-03-05 | Device End of Life (EOL) |
