BUY BA10393F https://www.utsource.net/itm/p/11196926.html
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Description: The BA10393F is a low-voltage, low-dropout, linear regulator with a built-in power MOSFET. Features: Low dropout voltage: 0.4V (Typ.) Output current: 0.5A Low quiescent current: 2.5mA (Typ.) Built-in power MOSFET Built-in overcurrent protection circuit Built-in thermal shutdown circuit Output voltage accuracy: ±2.0% Applications: Portable devices Battery-powered equipment Digital still cameras Cellular phones Handheld PCs (For reference only)