Ultralow Noise, 200 mA, CMOS Linear Regulator Data Sheet ADP151 FEATURES TYPICAL APPLICATION CIRCUIT V = 2.3V V = 1.8V IN OUT Ultralow noise: 9 V rms 1 VIN VOUT 5 1F No noise bypass capacitor required 1F 2 GND Stable with 1 F ceramic input and output capacitors ON 3 4 Maximum output current: 200 mA EN NC OFF Input voltage range: 2.2 V to 5.5 V NC = NO CONNECT Low quiescent current Figure 1. TSOT ADP151 with Fixed Output Voltage, 1.8 V I = 10 A with 0 load GND I = 265 A with 200 mA load GND 1 2 Low shutdown current: <1 A V = 1.8V V = 2.3V OUT IN Low dropout voltage: 140 mV at 200 mA load VIN VOUT A C C OUT IN Initial accuracy: 1% 1F TOP VIEW (Not to Scale) Accuracy over line, load, and temperature: 2.5% ON EN GND 16 fixed output voltage options: 1.1 V to 3.3 V OFF B PSRR performance of 70 dB at 10 kHz Figure 2. WLCSP ADP151 with Fixed Output Voltage, 1.8 V Current-limit and thermal overload protection Logic controlled enable V = 2.3V V = 1.8V IN OUT 6 1 Internal pull-down resistor on EN input VIN VOUT 1F 1F 5-lead TSOT package ADP151 2 5 NC NC TOP VIEW 6-lead LFCSP package ON (Not to Scale) 4 3 EN GND OFF 4-ball, 0.4 mm pitch WLCSP NC = NO CONNECT. DO NOT APPLICATIONS CONNECT TO THIS PIN. RF, VCO, and PLL power supplies Figure 3. LFCSP ADP151 with Fixed Output Voltage, 1.8 V Mobile phones Digital camera and audio devices Portable and battery-powered equipment Post dc-to-dc regulation Portable medical devices GENERAL DESCRIPTION The ADP151 is an ultralow noise, low dropout linear regulator The ADP151 is specifically designed for stable operation with that operates from 2.2 V to 5.5 V and provides up to 200 mA tiny 1 F, 30% ceramic input and output capacitors to meet of output current. The low 140 mV dropout voltage at 200 mA the requirements of high performance, space constrained load improves efficiency and allows operation over a wide input applications. voltage range. The ADP151 is capable of 16 fixed output voltage options, Using an innovative circuit topology, the ADP151 achieves ranging from 1.1 V to 3.3 V. ultralow noise performance without the necessity of a bypass Short-circuit and thermal overload protection circuits prevent capacitor, making it ideal for noise-sensitive analog and RF damage in adverse conditions. The ADP151 is available in tiny applications. The ADP151 also achieves ultralow noise per- 5-lead TSOT, 6-lead LFCSP, and 4-ball, 0.4 mm pitch, halide-free formance without compromising PSRR or transient line and WLCSP packages for the smallest footprint solution to meet a load performance. The low 265 A of quiescent current at variety of portable power application requirements. 200 mA load makes the ADP151 suitable for battery-operated portable equipment. The ADP151 also includes an internal pull-down resistor on the EN input. Rev. E 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. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 20102012 Analog Devices, Inc. All rights reserved. 08627-001 08627-047 08627-002ADP151 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 11 Typical Application Circuit ............................................................. 1 Applications Information .............................................................. 12 General Description ......................................................................... 1 Capacitor Selection .................................................................... 12 Revision History ............................................................................... 2 Enable Feature ............................................................................ 13 Specif icat ions ..................................................................................... 3 Adjustable Output Voltage Operation ..................................... 13 Input and Output Capacitor, Recommended Specifications .. 4 Current-Limit and Thermal Overload Protection ................. 15 Absolute Maximum Ratings ............................................................ 5 Thermal Considerations ............................................................ 15 Thermal Data ................................................................................ 5 Printed Circuit Board Layout Considerations ............................ 20 Thermal Resistance ...................................................................... 5 Outline Dimensions ....................................................................... 21 ESD Caution .................................................................................. 5 Ordering Guide .......................................................................... 22 Pin Configurations and Function Descriptions ........................... 6 REVISION HISTORY 4/12Rev. D to Rev. E Added Figure 51 to Figure 56 ....................................................... 18 Changes to Figure 33 ...................................................................... 13 Added Figure 59 ............................................................................. 19 Updated Outline Dimensions ....................................................... 21 Added Figure 62 ............................................................................. 20 Changes to Ordering Guide .......................................................... 22 Added Figure 65 ............................................................................. 21 Updated Outline Dimensions ....................................................... 21 3/11Rev. C to Rev. D Changes to Ordering Guide .......................................................... 23 Changes to Current-Limit Threshold Temperature Range ......... 4 Added EPAD Notation .................................................................... 6 8/10Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 22 Changes to Figure 8 ........................................................................... 7 Changes to Figure 15 Caption and Figure 16 Caption ................. 8 1/11Rev. B to Rev. C Changes to Figure 17 Caption and Figure 18 Caption ................. 9 Changes to Figure 23 ........................................................................ 9 Changes to Ordering Guide .......................................................... 21 12/10Rev. A to Rev. B 3/10Revision 0: Initial Version Added LFCSP Package ....................................................... Universal Added Figure 3 Renumbered Sequentially .................................. 1 Added Table 2 Caption Renumbered Sequentially ..................... 4 Changes to Table 4 ............................................................................ 5 Added Figure 6, Changes to Table 5 ............................................... 6 Changes to Figure 23 ........................................................................ 9 Changes to Figure 37 and Figure 38 ............................................. 14 Rev. E Page 2 of 24