The LP3987H-28B5F is a Low Dropout Regulator (LDO) manufactured by LOWPOWER and packaged in a SOT23-5 RoHS-compliant form factor. This device is perfect for applications requiring low-current, low-voltage performance. It features a 300mA Output Current, a Dropout Voltage of 265mV, a Step-Down Voltage of 28V, an Operating Temperature of -40°C to +85°C, and a Quiescent Current of 4.2uA. Additionally, this regulator offers excellent line and load regulation, fast transient response, reverse current blocking capability, and low thermal resistance. Its small size allows for space savings in space-constrained designs and it is ideal for battery-operated applications.