전자부품 데이터시트 검색엔진 |
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FAN2535 데이터시트(PDF) 1 Page - Fairchild Semiconductor |
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FAN2535 데이터시트(HTML) 1 Page - Fairchild Semiconductor |
1 / 11 page www.fairchildsemi.com REV. 1.0.2 8/26/03 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 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. 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. FAN2534/FAN2535 150 mA CMOS LDO Regulator with Fast Start, Enable Block Diagrams FAN2534 EN ADJ GND Thermal Sense p VIN VOUT Bandgap Error Amplifier FAN2534-XX EN BYP GND GND Bandgap Thermal Sense p Error Amplifier VIN VOUT FAN2535-XX EN ERR Bandgap Thermal Sense p Error Amplifier VIN VOUT |
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