Description

The FAN2534/FAN2535 family of micropower low-dropout voltage regulators utilize CMOS technology to offer a new level of cost-effective performance in GSM, TDMA, and CDMA cellular handsets, laptop and notebook computers, and other portable devices. Proprietary design technics ensure high ripple rejection. Other features include low noise, short circuit current limit, thermal shutdown circuit, low dropout voltage, fast enable required in CDMA handset applications, exceptional loop stability to accommodate a wide variety of external capacitors, and a compact SOT23-5 surface-mount package. These products offer significant improvements over older Bipolar and CMOS designs and are pin-compatible with many popular devices.

Features

• 70dB Ripple rejection ( >45dB up to 1MHz)

• 150µsec Power On Time

• 150µsec Enable Time

• Low noise - 50µVrms

• Enable optimized for CDMA time slices

• 180 mV dropout voltage at 150 mA

• Enable/Shutdown Control

• Enable time independent of noise bypass capacitor value

• SOT23-5 package

• Thermal limiting

• 300 mA trimmed current limit

Applications

• Cellular Phones and accessories

• PDAs

• Portable cameras and video recorders

• Laptop, notebook and palmtop computers