Electronic Manufacturer Part no Datasheet Electronics Description Texas Instruments LP38691DTX-3.3 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-3.3 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-3.3 [Old version datasheet] 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-3.3 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors Texas Instruments LP38691DTX-1.8 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-1.8 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-1.8 [Old version datasheet] 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors LP38691DTX-1.8 [Old version datasheet] LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

Electronic Manufacturer Part no Datasheet Electronics Description National Semiconductor ... LP38691DTX-3.3 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors National Semiconductor ... LP38691DTX-1.8 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

The LP3869x low-dropout CMOS linear regulators provide tight output tolerance (2% typical), extremely low dropout voltage (250 mV at 500-mA load current, V_OUT = 5 V), and excellent AC performance using ultralow equivalent series resistance (ESR) ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow use of the full operating current even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base-drive current is required to bias it, thus allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.