ADP121-ACBZ30R7 Analog Devices

150 mA, Low Quiescent Current, CMOS Linear Regulator Data Sheet ADP121 FEATURES TYPICAL APPLICATION CIRCUITS Input voltage range: 2.3 V to 5.5 V V = 2.3V V = 1.8V IN OUT Output voltage range: 1.2 V to 3.3 V 1 VIN VOUT 5 Output current: 150 mA C C IN OUT 1F 2 1F GND Low quiescent current I = 11 A with 0 A load GND 3 4 ON EN NC I = 30 A with 150 mA load GND OFF Low shutdown current: <1 A NC = NO CONNECT Low dropout voltage Figure 1. ADP121 TSOT with Fixed Output Voltage, 1.8 V 90 mV 150 mA load High PSRR V = 1.8V V = 2.3V 70 dB 1 kHz at V = 1.2 V OUT OUT IN VIN VOUT 70 dB 10 kHz at V = 1.2 V OUT C C IN OUT 1F 1F Low noise: 40 V rms at V = 1.2 V OUT No noise bypass capacitor required ON EN GND Output voltage accuracy: 1% OFF Stable with a small 1 F ceramic output capacitor Figure 2. ADP121 WLCSP with Fixed Output Voltage, 1.8 V Current limit and thermal overload protection Logic controlled enable 5-lead TSOT package 4-ball 0.4 mm pitch WLCSP APPLICATIONS Mobile phones Digital cameras and audio devices Portable and battery-powered equipment Post dc-to-dc regulation Post regulation GENERAL DESCRIPTION The ADP121 is a quiescent current, low dropout, linear regulator The ADP121 is available in output voltages ranging from 1.2 V that operates from 2.3 V to 5.5 V and provides up to 150 mA of to 3.3 V. The parts are optimized for stable operation with small output current. The low 135 mV dropout voltage at 150 mA 1 F ceramic output capacitors. The ADP121 delivers good load improves efficiency and allows operation over a wide transient performance with minimal board area. input voltage range. The low 30 A of quiescent current at full Short-circuit protection and thermal overload protection circuits load makes the ADP121 ideal for battery-operated portable prevent damage in adverse conditions. The ADP121 is available equipment. in a tiny 5-lead TSOT and 4-ball 0.4 mm pitch halide-free WLCSP packages and utilizes the smallest footprint solution to meet a variety of portable applications. Rev. G 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 20082012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06901-001 06901-002ADP121 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 11 Typical Application Circuits ............................................................ 1 Applications Information .............................................................. 12 General Description ......................................................................... 1 Capacitor Selection .................................................................... 12 Revision History ............................................................................... 2 Undervoltage Lockout ............................................................... 13 Specif icat ions ..................................................................................... 3 Enable Feature ............................................................................ 13 Recommended Specifications: Input and Output Capacitors 4 Current Limit and Thermal Overload Protection ................. 14 Absolute Maximum Ratings ............................................................ 5 Thermal Considerations ............................................................ 14 Thermal Data ................................................................................ 5 PCB Layout Considerations ...................................................... 17 Thermal Resistance ...................................................................... 5 Outline Dimensions ....................................................................... 18 ESD Caution .................................................................................. 5 Ordering Guide .......................................................................... 19 Pin Configurations and Function Descriptions ........................... 6 REVISION HISTORY 8/12Rev. F to Rev. G Changes to Table 3 ............................................................................. 5 Changes to Figure 46 Caption and Figure 47 Caption .............. 17 Change to Ordering Guide ............................................................. 19 Changes to Ordering Guide .......................................................... 19 7/12Rev. E to Rev. F 9/09Rev. A to Rev. B Updated Outline Dimensions ........................................................ 18 Updated Outline Dimensions ....................................................... 18 Change to Ordering Guide ............................................................. 19 Changes to Ordering Guide .......................................................... 19 8/11Rev. D to Rev. E 3/09Rev. 0 to Rev. A Changes to Figure 22 ........................................................................ 9 Changes to Features and General Description Sections .............. 1 Changes to Ordering Guide .......................................................... 19 Changes to Input and Output Capacitor Parameter ..................... 4 1/10Rev. C to Rev. D Changes to Figure 17 to Figure 20 ................................................... 9 Changes to Ordering Guide .......................................................... 19 Changes to Figure 49 ...................................................................... 17 Added Figure 50 ............................................................................. 17 11/09Rev. B to Rev. C Changes to Ordering Guide .......................................................... 19 Changes to Figure 1, Figure 2, and General Description 7/08Revision 0: Initial Version Section ................................................................................................ 1 Rev. G Page 2 of 20