Integrated Circuit IC Chip - Replacement Controller IC Chip RT9059 RT9059GSP SOP-8 8pin (Code 1-CHIP1280). The RT9059GSP is a high-performance Low-Dropout Linear Regulator (LDO) from Richtek. It is suitable for applications requiring very low input voltage and provides an output current up to 3A, making it ideal for motherboards and laptops.

• Output Current: Up to 3A.
• Input Voltage (VIN): From 1V to 5.5V.
• Control Voltage (VDD): 3V to 5.5V (required for internal control circuitry).
• Output Voltage (VOUT): Adjustable from 0.8V to 2.5V (or up to 5.5V depending on configuration) with ±1.5% accuracy.
• Dropout Voltage: Typically 350mV at 3A.
• Package Type: SOP-8-EP (with exposed thermal pad for better heat dissipation).

For the pin arrangement, according to the Richtek Datasheet, the function of the 8 pins is as follows: