LP3993

LP3993 Low IQ, 80mA Linear Regulator for Digital Applications PRELIMINARY June 2004 www.DataSheet4U.com LP3993 Low IQ, 80mA Linear Regulator for Digital Applications General Description The LP3993 is a linear regulator capable of supplying 80mA output current. The LP3993 is designed to meet the requirements of digital systems where low IQ, fast start up, and good load transient response are important. The device has been designed to work with small ceramic capacitors of 1.0µF and above. This device is available with outputs in the range 1.5V to 3.3V outputs. Please contact your local sales office for availability of particular voltage options. Key Specifications n n n n n n n n n n n Input Voltage Range Output Voltage Range Output Current Output Stable - Capacitors Virtually Zero IQ (Disabled) Very Low IQ (Enabled) Output Voltage Noise PSRR Start Up Time Low Dropout (where applic.) Load Transient Response 2.5 to 6.0V 1.5 to 3.3V 80mA 1.0uF < 1µA 10µA at 1mA IOUT 250µVRMS 40dB at 1kHz 150µs 160mV typ. 60mV Features n Stable with Low-Value Ceramic Input and Output Capacitors n No Noise Bypass Capacitor Required n Fast Turn-On n Logic Controlled Enable n Thermal-Overload and Short-Circuit Protection n -40 to +125˚C junction temperature range for operation Packages micro SMD (4 Pin) SOT23 - 5 For other package options contact your NSC sales office. Applications n Cellular Phones n PDA Handsets n Wireless LAN devices Typical Application Circuit 20089501 © 2004 National S...