The PT6440 series are 6‑A, 5‑V/3.3‑V input adjustable integrated switching regulators with up to 91% efficiency and a small copper‑case footprint.
The PT6440 Excalibur™ power modules are high‑performance integrated switching regulators housed in a thermally efficient solderable copper case. They operate from input voltages as low as 3.1 V and provide adjustable low‑voltage outputs, making them suitable for DSPs and microprocessors. Features include external output voltage adjustment, an on/off inhibit pin, short‑circuit protection, and a standby function.
The datasheet lists detailed specifications such as a 6 A output current, 3.1‑5.5 V input range, up to 91% efficiency, and MTBF of 10⁶ hours. Application notes cover capacitor recommendations, output‑voltage adjustment using resistors on pin 12, and the use of the inhibit function for on/off control.
| Short‑Circuit Threshold | 10 A |
|---|---|
| Weight | 23 g |
A 100 µF electrolytic (or tantalum) capacitor at the input and a 330 µF electrolytic capacitor at the output are required.