High Accuracy, Ultralow I , 500 mA, Q anyCAP Low Dropout Regulator Data Sheet ADP3335 FEATURES FUNCTIONAL BLOCK DIAGRAM High accuracy over line and load: 0.9% at 25C, 1.8% over Q1 OUT IN temperature ADP3335 THERMAL R1R1 Ultralow dropout voltage: 200 mV (typical) at 500 mA PROTECTION CC NR Requires only C = 1.0 F for stability O DRIVER gm anyCAP = stable with any type of capacitor (including MLCC) R2 Current and thermal limiting SD + BANDGAP Low noise REF Low shutdown current: < 10 nA (typical) 2.6 V to 12 V supply range GND 40C to +85C ambient temperature range Figure 1. APPLICATIONS 5 PCMCIA cards NR Cellular phones ADP3335 Camcorders, cameras OUT 3 Networking systems, DSL/cable modems 7 IN OUT 2 V 8 OUT 1 V Cable set-top box IN IN OUT + + C C IN OUT SD GND MP3/CD players 1 F 1 F 4 6 DSP supplies ON OFF Figure 2. Typical Application Circuit GENERAL DESCRIPTION The ADP3335 is a member of the ADP333x family of precision, The dropout voltage of the ADP3335 is only 200 mV (typical) at low dropout, anyCAP voltage regulators. It operates with an input 500 mA. This device also includes a safety current limit, thermal voltage range of 2.6 V to 12 V, and delivers a continuous load overload protection, and a shutdown feature. In shutdown mode, current up to 500 mA. The ADP3335 stands out from conventional the ground current is reduced to less than 1 A. The ADP3335 has low dropout regulators (LDOs) by using an enhanced process a low quiescent current of 80 A (typical) in light load situations. enabling it to offer performance advantages beyond its competition. Its patented design requires only a 1.0 F output capacitor for stability. This device is insensitive to output capacitor equivalent series resistance (ESR), and is stable with any good quality capacitorincluding ceramic (MLCC) types for space-restricted applications. The ADP3335 achieves exceptional accuracy of 0.9% at room temperature and 1.8% over temperature, line, and load. Rev. D Document Feedback 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 20002013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 00147-0-002 00147-0-001ADP3335 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications Information .............................................................. 10 Applications ....................................................................................... 1 Output Capacitor Selection ....................................................... 10 Functional Block Diagram .............................................................. 1 Input Bypass Capacitor .............................................................. 10 General Description ......................................................................... 1 Noise Reduction ......................................................................... 10 Revision History ............................................................................... 2 Thermal Overload Protection .................................................. 10 Specifications ..................................................................................... 3 Calculating Junction Temperature ........................................... 10 Absolute Maximum Ratings ............................................................ 4 Printed Circuit Board Layout Considerations ....................... 11 ESD Caution .................................................................................. 4 LFCSP Layout Considerations .................................................. 11 Pin Configuration and Function Descriptions ............................. 5 Shutdown Mode ......................................................................... 11 Typical Performance Characteristics ............................................. 6 Outline Dimensions ....................................................................... 12 Theory of Operation ........................................................................ 9 Ordering Guide .......................................................................... 13 REVISION HISTORY 10/13Rev. C to Rev. D 1/04Rev. 0 to Rev. A Updated Outline Dimensions ....................................................... 12 Format Updated .................................................................. Universal Changes to Ordering Guide .......................................................... 13 Renumbered Figures .......................................................... Universal Removed Figure 22 ............................................................................ 6 12/12Rev. B to Rev. C Change to Printed Circuit Board Layout Considerations Changes to Figure 14 and Figure 16 ............................................... 7 Section .............................................................................................. 11 Updated Outline Dimensions ....................................................... 12 Added LFCSP Layout Considerations Section ........................... 11 Changes to Ordering Guide .......................................................... 13 Added Package Drawing ................................................... Universal Changes to Ordering Guide .......................................................... 16 6/10Rev. A to Rev. B Added Exposed Pad Notation to Figure 4 and Table 3 ................ 5 Added Exposed Pad Notation to Outline Dimensions ............. 12 Changes to Ordering Guide .......................................................... 13 Rev. D Page 2 of 16