TPS51225C 1225C 51225C Laptop Step-Down Controller IC 5V 3.3V

Product Description

The TPS51225C / 1225C / 51225C is a dual synchronous step-down controller IC used in laptop motherboard power circuits to generate the 5V and 3.3V system power rails. It is designed for notebook PC applications and integrates two high-efficiency buck controllers in a single package.

The TPS51225C is commonly found in laptop motherboards where it controls the +5VALW/+5VS and +3VALW/+3VS power supplies. It supports a wide input voltage range and includes protection features such as over-current, under-voltage and thermal protection.

The IC is supplied in a 24-pin QFN package and is suitable for professional laptop motherboard repair and replacement when the original power controller is faulty

Warranty Details

Warranty: No Warranty

Important Note:-

• Please compare the TPS51225C / 1225C marking with your original IC before ordering.

• This is a laptop motherboard power-management IC, not a complete motherboard.

• The IC is used to generate 5V and 3.3V power rails in compatible notebook motherboard circuits.

• Verify the 24-pin QFN package and pin orientation before purchase.

• Do not substitute TPS51225C with another similar-looking controller without checking the motherboard circuit.

• Confirm the original IC number, package and motherboard schematic before replacement.

• Professional SMD rework equipment and proper soldering skills are recommended.

• Incorrect installation can damage the IC or the laptop motherboard.

• The product includes the IC chip only; no motherboard or other components are included.

• Payment will be refunded if the product is out of stock.

• Immediate replacement will be provided if there are any functionality problems.

• Warranty will be void in case of physical damage, incorrect installation or soldering damage.

• The product image is for reference and the actual IC marking may vary slightly.

FAQs

1. What is TPS51225C used for? TPS51225C is a dual buck controller used in laptop motherboard power circuits to generate 5V and 3.3V supply rails.

2. Is TPS51225C a laptop motherboard IC? Yes. It is widely used as a power-management controller in notebook and laptop motherboard designs.

3. What do the markings 1225C and 51225C mean? They are common top-marking/search references associated with the TPS51225C IC.

4. What package does TPS51225C use? The TPS51225C is supplied in a 24-pin QFN package.

5. Can I replace it with another IC? Only if the replacement is electrically and physically identical. It is recommended to match the exact TPS51225C part number and motherboard circuit before replacement.