TPS51125 51125 QFN24 Laptop Power IC Chipset

TPS51125 51125 QFN24 Laptop Power IC Chipset

• The TPS51125 is a dual synchronous buck controller manufactured by Texas Instruments.

• It is designed for notebook system power supplies (i.e. in laptops) and similar applications.

• The device comes in a 24-pin QFN (quad flat no-lead) package (QFN24) which is compact and suitable for integration on laptop motherboards.

• Parameter	Value / Range
  Input voltage range (Vin)	5.5 V to 28 V

• Output voltage range (Vout)2.0 V to 5.5 V

• Being a dual synchronous buck controller, the TPS51125 controls two buck converters. These converters step down a higher input voltage to lower voltages required by various subsystems in a laptop (e.g., core rails, I/O rails, memory rails, etc.).

• The built-in 5 V and 3.3 V LDOs allow the chip to supply fixed voltages directly to components that require steady 5 V or 3.3 V, simplifying design by reducing the need for external regulators.

• The adaptive on-time / D-CAP control helps maintain good efficiency across load conditions, and supports switching between light-load mode and PWM-only mode to optimize for noise or efficiency as needed.cu