300 mA, Low Dropout CMOS Linear Regulator ADP1712/ADP1713/ADP1714 FEATURES TYPICAL APPLICATION CIRCUITS Maximum output current: 300 mA ADP1712 V = 5V V = 3.3V IN OUT Input voltage range: 2.5 V to 5.5 V 5 1 IN OUT Light load efficient 2.2F 2.2F 2 GND I = 75 A with 100 A load GND 10nF Low shutdown current: <1 A 3 EN SS 4 Very low dropout voltage: 170 mV 300 mA load Figure 1. ADP1712 with Fixed Output Voltage and Soft-Start Capacitor, 3.3 V Initial accuracy: 1% Accuracy over line, load, and temperature: 2% ADP1712 ADJUSTABLE 16 fixed output voltage options with soft start: V = 0.8V(1 + R1/R2) OUT V = 5.5V IN 1 IN OUT 5 0.75 V to 3.3 V (ADP1712) 2.2F 2.2F Adjustable output voltage option: 0.8 V to 5.0 V 2 GND (ADP1712 Adjustable) R1 3 EN ADJ 4 16 fixed output voltage options with reference bypass: R2 0.75 V to 3.3 V (ADP1713) 16 fixed output voltage options with tracking: Figure 2. ADP1712 with Adjustable Output Voltage, 0.8 V to 5.0 V 0.75 V to 3.3 V (ADP1714) ADP1713 Low output noise: 40 V rms V = 0.75V V = 3V IN OUT High PSRR: 72 dB 1 kHz 1 5 IN OUT 2.2F Stable with small 2.2 F ceramic output capacitor 2 2.2F GND Excellent load/line transient response 10nF 3 EN BYP 4 Current limit and thermal overload protection Logic controlled enable Figure 3. ADP1713 with Fixed Output Voltage and Bypass Capacitor, 0.75 V 5-lead TSOT package ADP1714 APPLICATIONS V = 3V V V (V) IN OUT OUT 1 5 IN OUT Mobile phones 2.2F 3 2.2F 2 GND 2 Digital camera and audio devices 1 Portable and battery-powered equipment 3 EN TRK 4 0 0V TO 5V 123 45 Post dc-dc regulation V (V) TRK Figure 4. ADP1714 with Output Voltage Tracking GENERAL DESCRIPTION The ADP1712/ADP1713/ADP1714, available in a tiny, 5-lead soft-start time. The ADP1713 allows a reference bypass capacitor TSOT package, are low dropout linear regulators that operate to be connected, which reduces output voltage noise and from 2.5 V to 5.5 V and provide up to 300 mA of output current. improves power supply rejection. The ADP1714 includes a The low 170 mV dropout voltage at a 300 mA load improves tracking feature, which allows the output to follow an external efficiency and allows operation over a wide input voltage range. voltage rail or reference. Using a novel scaling architecture, ground current is a very low The ADP1712/ADP1713/ADP1714 are optimized for stable 75 A when driving a 100 A load, making the ADP1712/ operation with small 2.2 F ceramic output capacitors, allowing ADP1713/ADP1714 ideal for battery-operated portable equipment. good transient performance while occupying minimal board The ADP1712/ADP1713/ADP1714 are available in 16 fixed space. An enable pin controls the output voltage on all devices, output voltage options. The ADP1712 is also available in an and an undervoltage lockout circuit disables the regulator if IN adjustable version, which allows output voltages that range from drops below a minimum threshold. The parts also have short 0.8 V to 5 V via an external divider. The ADP1712 fixed version circuit protection and thermal overload protection, which allows an external capacitor to be connected to program the prevent damage to the devices in adverse conditions. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20072009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06455-001 06455-003 06455-002 06455-004ADP1712/ADP1713/ADP1714 TABLE OF CONTENTS Adjustable Output Voltage (ADP1712 Adjustable) ............... 11 Features .............................................................................................. 1 Bypass Capacitor (ADP1713) ................................................... 11 Applications ....................................................................................... 1 Track Mode (ADP1714) ............................................................ 11 Typical Application Circuits ............................................................ 1 Enable Feature ............................................................................ 11 General Description ......................................................................... 1 Undervoltage Lockout (UVLO) ............................................... 11 Revision History ............................................................................... 2 Application Information ................................................................ 12 Specif icat ions ..................................................................................... 3 Capacitor Selection .................................................................... 12 Absolute Maximum Ratings ............................................................ 5 Current Limit and Thermal Overload Protection ................. 12 Thermal Resistance ...................................................................... 5 Thermal Considerations ............................................................ 13 ESD Caution .................................................................................. 5 Printed Circuit Board Layout Considerations ....................... 14 Pin Configurations and Function Descriptions ........................... 6 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 7 Ordering Guide .......................................................................... 15 Theory of Operation ...................................................................... 10 Soft-Start Function (ADP1712) ................................................ 10 REVISION HISTORY 6/09Rev. 0 to Rev. A Updated Outline Dimensions ....................................................... 15 Changes to Ordering Guide .......................................................... 15 1/07Revision 0: Initial Version Rev. A Page 2 of 16