0.8 A, Low V , Low Dropout IN Linear Regulator Data Sheet ADP1752/ADP1753 FEATURES TYPICAL APPLICATION CIRCUITS V = 1.8V V = 1.5V IN OUT Maximum output current: 0.8 A Input voltage range: 1.6 V to 3.6 V 4.7F 4.7F Low shutdown current: <2 A 16 15 14 13 VIN VIN VOUT VOUT Very low dropout voltage: 70 mV at 0.8 A load 1 VIN VOUT 12 Initial accuracy: 1% ADP1752 Accuracy over line, load, and temperature: 2% 100k 2 VIN VOUT 11 TOP VIEW 7 fixed output voltage options with soft start (Not to Scale) 3 VIN VOUT 10 0.75 V to 2.5 V (ADP1752) PG Adjustable output voltage option with soft start 4 EN SENSE 9 PG GND SS NC 0.75 V to 3.3 V (ADP1753) 7 8 5 6 High PSRR 65 dB at 1 kHz 10nF 65 dB at 10 kHz 54 dB at 100 kHz Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V 23 V rms at 0.75 V output V = 1.8V V = 0.5V(1 + R1/R2) IN OUT Stable with small 4.7 F ceramic output capacitor Excellent load and line transient response 4.7F 4.7F 16 15 14 13 Current-limit and thermal overload protection VIN VIN VOUT VOUT Power-good indicator 1 VIN VOUT 12 Logic-controlled enable ADP1753 100k 2 VIN VOUT 11 TOP VIEW Reverse current protection (Not to Scale) 3 VIN VOUT 10 R1 APPLICATIONS PG 4 EN ADJ 9 Server computers PG GND SS NC R2 7 8 5 6 Memory components Telecommunications equipment 10nF Network equipment DSP/FPGA/microprocessor supplies Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.3 V Instrumentation equipment/data acquisition systems GENERAL DESCRIPTION voltages that range from 0.75 V to 3.3 V via an external divider. The ADP1752/ADP1753 are low dropout (LDO) CMOS linear The ADP1752/ADP1753 allow an external soft start capacitor regulators that operate from 1.6 V to 3.6 V and provide up to to be connected to program the startup. A digital power-good 800 mA of output current. These low VIN/VOUT LDOs are ideal output allows power system monitors to check the health of the for regulation of nanometer FPGA geometries operating from output voltage. 2.5 V down to 1.8 V I/O rails, and for powering core voltages down to 0.75 V. Using an advanced proprietary architecture, The ADP1752/ADP1753 are available in a 16-lead, 4 mm 4 mm they provide high power supply rejection ratio (PSRR) and low LFCSP, making them not only very compact solutions, but also noise, and achieve excellent line and load transient response providing excellent thermal performance for applications that with only a small 4.7 F ceramic output capacitor. require up to 800 mA of output current in a small, low profile footprint. The ADP1752 is available in seven fixed output voltage options. The ADP1753 is the adjustable version, which allows output Rev. H 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 20082015 Analog Devices, Inc. All rights reserved. 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. Technical Support www.analog.com 07718-001 07718-002ADP1752/ADP1753 Data Sheet TABLE OF CONTENTS Soft Start Function (ADP1752/ADP1753) ............................. 11 Features .............................................................................................. 1 Adjustable Output Voltage (ADP1753) ................................... 12 Applications ....................................................................................... 1 Enable Feature ............................................................................ 12 Typical Application Circuits ............................................................ 1 Power-Good Feature .................................................................. 12 General Description ......................................................................... 1 Reverse Current Protection Feature ........................................ 13 Revision History ............................................................................... 2 Applications Information .............................................................. 14 Specifications ..................................................................................... 3 Capacitor Selection .................................................................... 14 Input and Output Capacitor, Recommended Specifications .. 4 Undervoltage Lockout ............................................................... 15 Absolute Maximum Ratings ............................................................ 5 Current-Limit and Thermal Overload Protection ................. 15 Thermal Data ................................................................................ 5 Thermal Considerations ............................................................ 15 Thermal Resistance ...................................................................... 5 PCB Layout Considerations ...................................................... 18 ESD Caution .................................................................................. 5 Outline Dimensions ....................................................................... 19 Pin Configurations and Function Descriptions ........................... 6 Ordering Guide .......................................................................... 19 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 11 REVISION HISTORY 1/15Rev. G to Rev. H 9/12Rev. B to Rev. C Changes to Ordering Guide .......................................................... 19 Changes to Table 3 ............................................................................. 5 Changes to Ordering Guide .......................................................... 19 4/14Rev. F to Rev. G 2/10Rev. A to Rev. B Changes to Figure 1 and Figure 2 ................................................... 1 Change to Table 4 ............................................................................. 5 Changes to Table 4 ............................................................................. 5 Changes to Figure 3 and Figure 4 ................................................... 6 Changes to Ordering Guide .......................................................... 19 Updated Outline Dimensions ....................................................... 19 4/09Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 19 Changes to Adjustable Output Voltage Accuracy (ADP1753) 1/14Rev. E to Rev. F Parameter, Table 1 ............................................................................. 3 Changes to Ordering Guide .......................................................... 19 Changes to Table 3 ............................................................................. 5 6/13Rev. D to Rev. E 10/08Revision 0: Initial Version Changed Adjustable Output Voltage Option with Soft Start (ADP1755) from 0.75 V to 3.0 V to 0.75 V to 3.3 V (Throughout) .................................................................................... 1 Updated Outline Dimensions ....................................................... 19 12/12Rev. C to Rev. D Added Junction Temperature of 150C, Table 3 ........................... 5 Rev. H Page 2 of 20