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FAN2512, FAN2513
150 mA CMOS LDO Regulators with Fast Start Enable

Features
Ultra Low Power Consumption Enable optimized for CDMA time phases 150 mV dropout voltage at 150 mA 25 A ground current at 150 mA Enable/Shutdown Control SOT23-5 package Thermal limiting 300 mA peak current

wide variety of external capacitors, and the compact SOT23-5 surface-mount package. In addition, the FAN2512/13 family offer the fast power-cycle time required in CDMA handset applications. These products offer significant improvements over older BiCMOS designs and are pin-compatible with many popular devices. The output is thermally protected against overload. The FAN2512 and FAN2513 devices are distinguished by the assignment of pin 4: FAN2512: pin 4 ADJ, allowing the user to adjust the output voltage over a wide range using an external voltage divider. FAN2512-XX: pin 4 BYP, to which a bypass capacitor may be connected for optimal noise performance. Output voltage is fixed, indicated by the suffix XX. FAN2513-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 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, and 3.3V. Custom output voltage are also available: please contact your local Fai
rchild Sales Office for information.
EN VIN BYP Bandgap VOUT ADJ Error Amplifier p VOUT

Applications
Cellular Phones and accessories PDAs Portable cameras and video recorders Laptop, notebook and palmtop computers

Description
The FAN2512/13 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 portable computers, and other portable devices. Features include extremely low power consumption and low shutdown current, low dropout voltage, exceptional loop stability able to accommodate a

Block Diagrams
EN VIN Bandgap Error Amplifier p

Thermal Sense FAN2512

GND FAN2512-XX EN VIN Bandgap p

Thermal Sense

GND

ERR Error Amplifier

VOUT

Thermal Sense FAN2513-XX

GND

REV. 1.1.8 5/25/04

FAN2512 Datasheet Fairchild Download PDF

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FAN2512 DATASHEET