2 A, Low V , Low Noise, IN CMOS Linear Regulator Data Sheet ADP1762 FEATURES TYPICAL APPLICATION CIRCUITS 2 A maximum output current ADP1762 V = 1.5V V = 1.7V IN OUT Low input voltage supply range VIN VOUT C C IN OUT 10F 10F VIN = 1.10 V to 1.98 V, no external bias supply required SENSE R Fixed output voltage range: VOUT FIXED = 0.9 V to 1.5 V ON PULL-UP 100k EN OFF Adjustable output voltage range: VOUT ADJ = 0.5 V to 1.5 V PG PG SS VADJ Ultralow noise: 2 V rms, 100 Hz to 100 kHz Noise spectral density C SS VREG REFCAP 10nF C C REG GND REF 4 nV/Hz at 10 kHz 1F 1F 3 nV/Hz at 100 kHz Low dropout voltage: 62 mV typical at 2 A load Figure 1. Fixed Output Operation Operating supply current: 4.5 mA typical at no load ADP1762 V = 1.7V V = 1.5V IN OUT 1.5% fixed output voltage accuracy over line, load, and VIN VOUT C C IN OUT temperature 10F 10F SENSE Excellent power supply rejection ratio (PSRR) performance R PULL-UP ON 100k EN OFF 62 dB typical at 10 kHz at 2 A load PG PG SS 46 dB typical at 100 kHz at 2 A load VADJ Excellent load/line transient response C R SS VREG REFCAP ADJ 10nF 10k C C REF REG Soft start to reduce inrush current GND 1F 1F Optimized for small 10 F ceramic capacitors Figure 2. Adjustable Output Operation Current-limit and thermal overload protection Table 1. Related Devices Power-good indicator Input Maximum Fixed/ Precision enable Device Voltage Current Adjustable Package 16-lead, 3 mm 3 mm LFCSP package ADP1761 1.10 V to 1 A Fixed/adjustable 16-lead AEC-Q100 qualified for automotive applications 1.98 V LFCSP APPLICATIONS ADP1763 1.10 V to 3 A Fixed/adjustable 16-lead 1.98 V LFCSP Regulation to noise sensitive applications such as radio ADP1740/ 1.6 V to 2 A Fixed/adjustable 16-lead frequency (RF) transceivers, analog-to-digital converter ADP1741 3.6 V LFCSP (ADC) and digital-to-analog converter (DAC) circuits, ADP1752/ 1.6 V to 0.8 A Fixed/adjustable 16-lead phase-locked loops (PLLs), voltage controlled oscillators ADP1753 3.6 V LFCSP (VCOs) and clocking integrated circuits ADP1754/ 1.6 V to 1.2 A Fixed/adjustable 16-lead Field-programmable gate array (FPGA) and digital signal ADP1755 3.6 V LFCSP processor (DSP) supplies The ADP1762 is optimized for stable operation with small 10 F Medical and healthcare ceramic output capacitors. The ADP1762 delivers optimal Industrial and instrumentation transient performance with minimal board area. GENERAL DESCRIPTION The ADP1762 is available in fixed output voltages ranging from The ADP1762 is a low noise, low dropout (LDO) linear regulator. 0.9 V to 1.5 V. The output of the adjustable output model can be It is designed to operate from a single input supply with an set from 0.5 V to 1.5 V through an external resistor connected input voltage as low as 1.10 V, without the requirement of an between VADJ and ground. external bias supply, to increase efficiency and provide up to The ADP1762 has an externally programmable soft start time by 2 A of output current. connecting a capacitor to the SS pin. Short-circuit and thermal The low 62 mV typical dropout voltage at a 2 A load allows the overload protection circuits prevent damage in adverse conditions. ADP1762 to operate with a small headroom while maintaining The ADP1762 is available in a small 16-lead LFCSP for the smallest regulation and providing better efficiency. footprint solution to meet a variety of applications. 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. Tel: 781.329.4700 20162021 Analog Devices, Inc. All rights reserved. No 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 12922-001 12922-002ADP1762 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Soft Start Function ..................................................................... 11 Applications ...................................................................................... 1 Adjustable Output Voltage ....................................................... 12 General Description ......................................................................... 1 Enable Feature ............................................................................ 12 Typical Application Circuits ........................................................... 1 Power-Good (PG) Feature ........................................................ 12 Revision History ............................................................................... 2 Applications Information ............................................................. 13 Specifications .................................................................................... 3 Capacitor Selection .................................................................... 13 Input and Output Capacitor: Recommended Specifications . 4 Undervoltage Lockout ............................................................... 14 Absolute Maximum Ratings ........................................................... 5 Current-Limit and Thermal Overload Protection ................ 14 Thermal Data ................................................................................ 5 Thermal Considerations ........................................................... 14 Thermal Resistance/Parameter .................................................. 5 PCB Layout Considerations ..................................................... 17 ESD Caution.................................................................................. 5 Outline Dimensions ....................................................................... 18 Pin Configuration and Function Descriptions ............................ 6 Ordering Guide .......................................................................... 18 Typical Performance Characteristics ............................................. 7 Automotive Products ................................................................ 19 Theory of Operation ...................................................................... 11 REVISION HISTORY 3/2021Rev. C to Rev. D 3/2019Rev. A to Rev. B Changes to Features Section ........................................................... 1 Changes to Figure 25 ..................................................................... 11 Change to Undervoltage Lockout, Hysteresis Parameter, Table 2 ................................................................................................ 4 9/2016Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 18 Changes to Figure 23 and Figure 24 ............................................ 11 Added Automotive Products Section .......................................... 19 4/2016Revision 0: Initial Version 3/2020Rev. B to Rev. C Changes to Thermal Data Section, Thermal Resistance/Parameter Section, and Table 5 .................................. 5 Rev. D Page 2 of 19