DatasheetsPDF.com

FAN2534 Dataheets PDF



Part Number FAN2534
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description (FAN2534 / FAN2535) 150 mA CMOS LDO Regulator
Datasheet FAN2534 DatasheetFAN2534 Datasheet (PDF)

www.DataSheet4U.com www.fairchildsemi.com FAN2534/FAN2535 150 mA CMOS LDO Regulator with Fast Start, Enable 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 low dropout voltage, fast enable required .

  FAN2534   FAN2534



Document
www.DataSheet4U.com www.fairchildsemi.com FAN2534/FAN2535 150 mA CMOS LDO Regulator with Fast Start, Enable 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 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. The FAN2534 and FAN2535 devices are distinguished by the assignment of pin 4: FAN2534: pin 4 – ADJ, allowing the user to adjust the output voltage over a wide range using an external voltage divider. FAN2534-XX: pin 4 – BYP, to which a bypass capacitor may be connected for optimal noise performance. Output voltage is fixed, as specified by the suffix XX. FAN2535-XX: pin 4 – ERR, a flag which indicates that the output voltage has dropped below the specified minimum due to a fault condition. The standard fixed output voltages available are 2.6V, 2.85V, and 3.0V . Custom output voltages are also available: please contact your local Fairchild Sales Office for information. Applications • • • • Cellular Phones and accessories PDAs Portable cameras and video recorders Laptop, notebook and palmtop computers 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, Block Diagrams EN VIN Bandgap Error Amplifier p VOUT ADJ Thermal Sense FAN2534 GND FAN2534-XX Thermal Sense Thermal Sense FAN2535-XX VIN BYP Bandgap Error Amplifier p VOUT EN VIN Bandgap p VOUT EN ERR Error Amplifier GND GND REV. 1.0.2 8/26/03 FAN2534/FAN2535 PRODUCT SPECIFICATION www.DataSheet4U.com Pin Assignments 1 FB VIN 5 VOUT SHDN GND 2 CAP+ EN 3 CAP- 4 ADJ/BYP/ERR Pin No. 1. 2. 3. 4. 5. FAN2534 VIN GND EN ADJ VOUT FAN2534-XX VIN GND EN BYP VOUT FAN2535-XX VIN GND EN ERR VOUT Pin Descriptions Pin Name ADJ BYP ERR EN VIN VOUT GND Pin No. 4 4 4 3 1 5 2 Type Input Passive Open drain Digital Input Power in Power out Power Pin Function Description FAN2534 Adjust. Ratio of potential divider from VOUT to ADJ determines output voltage. FAN2534-XX Bypass. Connect 10 nF capacitor for noise reduction. FAN2535-XX Error. Error flag output. LOW when Vout< 95% of nominal; HIGH when Vout> 95% of nominal. Enable. LOW in Shutdown Mode; HIGH in Enable Mode Voltage Input. Supply.


IR1168S FAN2534 FAN2535


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)