BUY M1541A1 https://www.utsource.net/itm/p/1067377.html
From old datasheet system
The M1541A1 is a BGA (Ball Grid Array) package from ALi (Acer Laboratories Incorporated). It is a power management IC that integrates a 5V to 1.8V regulator, a 3.3V to 1.8V regulator, and two low dropout regulators (LDOs). The M1541A1 is designed for use in notebook and desktop PCs, as well as other applications that require a power management IC. It is capable of providing up to 1.5A of output current and has an operating temperature range of -20°C to 85°C. It also features over-temperature protection, over-current protection, and over-voltage protection. The M1541A1 is a highly integrated power management IC that is designed to reduce the number of external components required for power management. It is ideal for applications that require a low-cost, high-efficiency power solution. (For reference only)