Key facts
- Brand
- Texas Instruments
- Model
- PT6440
- Category
- Power Management
- Industry
- Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-02
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Texas Instruments PT6440 Series Integrated Switching Regulator Datasheet
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.
Texas Instruments PT6440 specifications
| Output Current | 6 A |
|---|---|
| Efficiency (at 3.3 V output) | 91 % |
| Adjustable Output Voltage | 1.0 V – 3.5 V (model dependent) |
| Required Input Capacitor | 100 µF electrolytic (or tantalum) |
| Required Output Capacitor | 330 µF electrolytic |
Source: Texas Instruments PT6440 Excalibur Power Modules Datasheet
All Texas Instruments PT6440 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What capacitors are required for proper operation?
A 100 µF electrolytic (or tantalum) capacitor at the input and a 330 µF electrolytic capacitor at the output are required.
From: Texas Instruments PT6440 Series Integrated Switching Regulator Datasheet
What capacitors are required for proper operation of the PT6440?
A minimum 100 µF electrolytic (or tantalum) capacitor is required at the input and a 330 µF electrolytic capacitor at the output.
From: Texas Instruments PT6440 Excalibur Power Modules Datasheet
How can the output voltage of a PT6440 regulator be adjusted?
The output voltage can be raised by adding a resistor R2 between the Vout‑Adj pin and ground, or lowered by adding a resistor R1 between Vout‑Adj and the output pins, using the formulas provided in the document.
From: Texas Instruments PT6440 Excalibur Power Modules Datasheet