Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT26-Chip-Image.pngPrimary Side Regulated Switching Mode Power Supply Controller
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The AP3783 is a high performance AC/DC power supply controller for battery charger and adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM).
The AP3783 provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring an opto-coupler. It also eliminates the need of loop compensation circuitry while maintaining stability.
The AP3783 provides valley turn-on function, operating frequency Jitter function (about 5.5% frequency change every 256μs) from light to full load range and 3-segment drive current to improve the power supply EMI performance. The AP3783 also has built-in fixed cable voltage drop compensation (7% and 4% of nominal system output voltage to meet various cables with different length and gauge) and adjustable line voltage compensation.
The AP3783 is packaged in SOT26.
| CableCompensation | 4% - 7% |
|---|---|
| OperatingCurrent (µA) | 450 |
| StandbyPower (Max) (mW) | 75 |
| StartupCurrent (µA) | - |
| UVLOThresholdon/off (V) | 15.5/6.8 |
| VCC Maximum Rating | 35 |
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-2519 | 2021-05-20 | 2021-11-20 | Device End of Life (EOL) |
