Datasheet ADP1763 (Analog Devices)

FabricanteAnalog Devices
Descripción3 A, Low VIN, Low Noise, CMOS Linear Regulator
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RevisiónD
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3 A, Low VIN, Low Noise,. CMOS Linear Regulator. Data Sheet. ADP1763. FEATURES. TYPICAL APPLICATION CIRCUITS

Datasheet ADP1763 Analog Devices, Revisión: D

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3 A, Low VIN, Low Noise, CMOS Linear Regulator Data Sheet ADP1763 FEATURES TYPICAL APPLICATION CIRCUITS 3 A maximum output current ADP1763 V V IN = 1.8V OUT = 1.5V Low input voltage supply range VIN VOUT C C IN OUT V 10µF 10µF IN = 1.10 V to 1.98 V, no external bias supply required SENSE Fixed output voltage range: V R OUT_FIXED = 0.9 V to 1.5 V PULL-UP ON 100kΩ EN Adjustable output voltage range: V OFF OUT_ADJ = 0.5 V to 1.5 V PG PG Ultralow noise: 2 μV rms, 100 Hz to 100 kHz SS VADJ Noise spectral density CSS VREG REFCAP 10nF 4 nV/√Hz at 10 kHz C C REG GND REF
001 3-
1µF 1µF 3 nV/√Hz at 100 kHz
1292
Low dropout voltage: 95 mV typical at 3 A load
Figure 1. Fixed Output Operation
Operating supply current: 4.5 mA typical at no load ±1.5% fixed output voltage accuracy over line, load, and ADP1763 V V IN = 1.8V OUT = 1.5V VIN VOUT temperature C C IN OUT 10µF 10µF Excellent power supply rejection ratio (PSRR) performance SENSE R 59 dB typical at 10 kHz at 3 A load PULL-UP ON 100kΩ EN OFF 43 dB typical at 100 kHz at 3 A load PG PG SS VADJ Excellent load/line transient response C Soft start to reduce inrush current SS VREG REFCAP RADJ 10nF C C 10kΩ REG REF Optimized for small 10 μF ceramic capacitors GND
002
1µF 1µF
23-
Current-limit and thermal overload protection
129 Figure 2. Adjustable Output Operation
Power-good indicator Precision enable Table 1. Related Devices 16-lead, 3 mm × 3 mm LFCSP package Input Maximum Fixed/ Device Voltage Current Adjustable Package APPLICATIONS
ADP1761 1.10 V to 1 A Fixed/adjustable 16-lead
Regulation to noise sensitive applications such as radio
1.98 V LFCSP
frequency (RF) transceivers, analog-to-digital converter
ADP1762 1.10 V to 2 A Fixed/adjustable 16-lead
(ADC) and digital-to-analog converter (DAC) circuits,
1.98 V LFCSP
phase-locked loops (PLLs), voltage controlled oscillators
ADP1740/ 1.6 V to 2 A Fixed/adjustable 16-lead
(VCOs) and clocking integrated circuits
ADP1741 3.6 V LFCSP
Field-programmable gate array (FPGA) and digital signal
ADP1752/ 1.6 V to 0.8 A Fixed/adjustable 16-lead
processor (DSP) supplies
ADP1753 3.6 V LFCSP
Medical and healthcare
ADP1754/ 1.6 V to 1.2 A Fixed/adjustable 16-lead
Industrial and instrumentation
ADP1755 3.6 V LFCSP
GENERAL DESCRIPTION
The ADP1763 is available in fixed output voltages ranging from The ADP1763 is a low noise, low dropout (LDO) linear regulator. 0.9 V to 1.5 V. The output of the adjustable output model can It is designed to operate from a single input supply with an input be set from 0.5 V to 1.5 V through an external resistor connected voltage as low as 1.10 V without the requirement of an external between VADJ and ground. bias supply to increase efficiency and provide up to 3 A of output The ADP1763 has an externally programmable soft start time by current. connecting a capacitor to the SS pin. Short-circuit and thermal The low 95 mV typical dropout voltage at a 3 A load allows the overload protection circuits prevent damage in adverse conditions. ADP1763 to operate with a small headroom while maintaining The ADP1763 is available in a small 16-lead LFCSP package for regulation and providing better efficiency. the smallest footprint solution to meet a variety of applications. The ADP1763 is optimized for stable operation with small 10 μF ceramic output capacitors. The ADP1763 delivers optimal transient performance with minimal board area.
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 rights of third parties that may result from its use. Specifications subject to change without notice. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. No license is granted by implication or otherwise under any patent or patent rights of Analog Tel: 781.329.4700 ©2016–2020 Analog Devices, Inc. All rights reserved. Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Typical Application Circuits Revision History Specifications Input and Output Capacitor: Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance/Parameter ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Soft Start Function Adjustable Output Voltage Enable Feature Power-Good (PG) Feature Applications Information Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Undervoltage Lockout Current-Limit and Thermal Overload Protection Paralleling ADP1763 for High Current Applications Thermal Considerations PCB Layout Considerations Outline Dimensions Ordering Guide