View si9183 datasheet:

Si9183 Vishay Siliconix High-Performance, Size Saving 150-mA CMOS LDO Regulator FEATURES D Low 135-mV Dropout at 150-mA Load D Thin SOT-23 5-Pin Package D Guaranteed 150-mA Output Current Available D 300-mA Peak Output Current Capability APPLICATIONS D Uses Low ESR Ceramic Output Capacitor D Battery Powered Portable Systems D Fast Load And Line Transient Response D Cellular Phones D Low Output Noise D PDAs, Palmtops D 1-mA Maximum Shutdown Current D Pagers D Built-in Short Circuit And Thermal Protection D Post Regulators for Multi-Output Converters D Fixed 1.8-V, 2.5-V, 2.8-V, 2.85-V, 3.0-V, 3.3-V, 5.0-V D Notebook Computers or Adjustable Output Voltage Options (Version B) DESCRIPTION The Si9183 is a high performance yet size saving 150-mA self-noise for low noise