Data Sheet ADP172 300 mA, Low Quiescent Current, CMOS Linear Regulator FEATURES TYPICAL APPLICATION CIRCUIT Maximum output current: 300 mA Input voltage range: 1.6 V to 3.6 V Low quiescent current I = 23 A with 0 mA load GND Figure 1. ADP172 with Fixed Output Voltage, 1.8 V I = 170 A with 300 mA load GND Low shutdown current: <1 A GENERAL DESCRIPTION Low dropout voltage: 50 mV at 300 mA load The ADP172 is a low voltage input, low quiescent current, low-drop- Output voltage accuracy: 1% out (LDO) linear regulator that operates from 1.6 V to 3.6 V and Up to 31 fixed output voltage options available from 0.8 V to provides up to 300 mA of output current. The low 50 mV dropout 3.0 V voltage at 300 mA load improves efficiency and allows operation Accuracy over line, load, and temperature: 3% over a wide input voltage range. The low 23 A of quiescent current at no load makes the ADP172 ideal for battery-operated portable Stable with small 1 F ceramic output capacitor equipment. PSRR performance of 70 dB at 10 kHz and 73 dB at 1 kHz Low noise: 30 V rms at V = 0.8 V OUT The ADP172 is capable of 31 fixed-output voltage options, ranging Current limit and thermal overload protection from 0.8 V to 3.0 V. The ADP172 is optimized for stable operation with small 1 F ceramic output capacitors. Ideal for powering digital Logic controlled enable processors, the ADP172 exhibits good transient performance and Tiny 4-ball, 0.5 mm pitch WLCSP package occupies minimal board space. Compared with commodity-type LDOs, the ADP172 provides 20 dB to 40 dB better power supply APPLICATIONS rejection ratio (PSRR) at 100 kHz, making the ADP172 an ideal Mobile phones power source for analog-to-digital converter (ADC) mixed-signal Digital camera and audio devices processor systems and allowing use of smaller size bypass capaci- tors. In addition, low output noise performance without the need for Portable and battery-powered equipment an additional bypass capacitor further reduces printed circuit board DSP/FPGA/microprocessor supplies (PCB) component count. Post dc-to-dc regulation Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP172 is available in a tiny 4-ball, 0.5 mm pitch WLCSP for the smallest footprint solution to meet a variety of portable power applications. Rev. F Information furnished by Analog Devices is believed to be accurate and reliableas i. However, no responsibility is assumed by Analog DOCUMENT FEEDBACK Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and TECHNICAL SUPPORT registered trademarks are the property of their respective owners.Data Sheet ADP172 TABLE OF CONTENTS Features................................................................ 1 Theory of Operation.............................................11 Applications........................................................... 1 Applications Information...................................... 12 Typical Application Circuit......................................1 Capacitor Selection.......................................... 12 General Description...............................................1 Undervoltage Lockout...................................... 13 Specifications........................................................ 3 Enable Feature.................................................13 Input and Output Capacitor, Recommended Current Limit and Thermal Overload Specifications................................................... 4 Protection....................................................... 13 Absolute Maximum Ratings...................................5 Thermal Considerations................................... 13 Thermal Data......................................................5 Printed Circuit Board Layout Considerations... 15 Thermal Resistance........................................... 5 Outline Dimensions............................................. 16 ESD Caution.......................................................5 Ordering Guide.................................................16 Pin Configuration and Function Descriptions........ 6 Output Voltage Options.................................... 16 Typical Performance Characteristics.....................7 Evaluation Boards............................................ 17 REVISION HISTORY 6/2021Rev. E to Rev. F Changes to Ordering Guide...........................................................................................................................16 Added Output Voltage Options Section......................................................................................................... 16 Added Evaluation Boards Section................................................................................................................. 17 5/2014Rev. D to Rev. E Changes to Figure 38 (Outline Dimensions Not Changed)............................................................................16 Changes to Ordering Guide...........................................................................................................................16 8/2012Rev. C to Rev. D Changes to Ordering Guide...........................................................................................................................16 4/2012Rev. B to Rev. C Updated Outline Dimensions......................................................................................................................... 16 Changes to Ordering Guide...........................................................................................................................16 5/2010Rev. A to Rev. B Changes to Figure 1........................................................................................................................................ 1 4/2010Rev. 0 to Rev. A Changes to Ordering Guide...........................................................................................................................16 2/2010Revision 0: Initial Version analog.com Rev. F 2 of 17