Datasheet ADP1765 (Analog Devices)

制造商Analog Devices
描述5 A, Low VIN, Low Noise, CMOS Linear Regulator
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5 A, Low VIN, Low Noise,. CMOS Linear Regulator. Data Sheet. ADP1765. FEATURES. TYPICAL APPLICATION CIRCUITS

Datasheet ADP1765 Analog Devices, 修订版: A

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5 A, Low VIN, Low Noise, CMOS Linear Regulator Data Sheet ADP1765 FEATURES TYPICAL APPLICATION CIRCUITS 5 A maximum output current ADP1765 V V IN = 1.8V OUT = 1.5V Low input voltage supply range VIN VOUT C C IN OUT VIN = 1.10 V to 1.98 V, no external bias supply required 22µF 22µF SENSE Fixed output voltage range (VOUT_FIXED): 0.55 V to 1.5 V RPULL-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: 5 nV/√Hz at 10 kHz; 4 nV/√Hz at 100 kHz CSS VREG REFCAP Low dropout voltage: 59 mV typical at 5 A load 10nF C C REG GND REF
001
1µF 1µF Operating supply current: 5 mA typical at no load
13933-
±1.5% fixed output voltage accuracy over line, load, and
Figure 1. Fixed Output Operation
temperature ADP1765 Excellent power supply rejection ratio (PSRR) performance V V IN = 1.8V OUT = 1.5V VIN VOUT 61 dB typical at 10 kHz at 5 A load C C IN OUT 22µF 22µF 43 dB typical at 100 kHz at 5 A load SENSE RPULL-UP ON Excellent load/line transient response 100kΩ EN PG PG OFF Soft start to reduce inrush current SS VADJ Optimized for small 22 µF ceramic capacitors CSS VREG REFCAP R Current-limit and thermal overload protection ADJ 10nF C C 10kΩ REG GND REF
002
Power-good indicator 1µF 1µF
13933-
Precision enable
Figure 2. Adjustable Output Operation
16-lead, 3 mm × 3 mm LFCSP package
The ADP1765 is available in fixed output voltages ranging from
APPLICATIONS
0.55 V to 1.5 V. The output voltage (VOUT) of the adjustable
Regulation to noise sensitive applications such as radio
output model can be set from 0.5 V to 1.5 V through an
frequency (RF) transceivers, analog-to-digital converter
external resistor connected between VADJ and ground.
(ADC) and digital-to-analog converter (DAC) circuits,
The ADP1765 has an externally programmable soft start time by
phase-locked loops (PLLs), voltage controlled oscillators
connecting a capacitor to the SS pin. Short-circuit and thermal
(VCOs) and clocking integrated circuits
overload protection circuits prevent damage in adverse conditions.
Field-programmable gate array (FPGA) and digital signal
The ADP1765 is available in a smal , 16-lead LFCSP package for
processor (DSP) supplies
the smal est footprint solution to meet a variety of applications.
Medical and healthcare Industrial and instrumentation Table 1. Related Devices Input Maximum Fixed/ GENERAL DESCRIPTION Model Voltage Current Adjustable Package
The ADP1765 is a low noise, low dropout (LDO) linear ADP1761 1.10 V to 1 A Fixed/ 16-lead regulator. It is designed to operate from a single input supply 1.98 V adjustable LFCSP with an input voltage as low as 1.10 V without the requirement ADP1762 1.10 V to 2 A Fixed/ 16-lead 1.98 V adjustable LFCSP of an external bias supply to increase efficiency and provide up ADP1763 1.10 V to 3 A Fixed/ 16-lead to 5 A of output current (IOUT). 1.98 V adjustable LFCSP The low 59 mV typical dropout voltage at a 5 A load allows the ADP1740/ 1.6 V to 2 A Fixed/ 16-lead ADP1765 to operate with a small headroom while maintaining ADP1741 3.6 V adjustable LFCSP regulation and providing better efficiency. ADP1752/ 1.6 V to 0.8 A Fixed/ 16-lead ADP1753 3.6 V adjustable LFCSP The ADP1765 is optimized for stable operation with small 22 µF ADP1754/ 1.6 V to 1.2 A Fixed/ 16-lead ceramic output capacitors. The ADP1765 delivers optimal transient ADP1755 3.6 V adjustable LFCSP performance with minimal printed circuit board (PCB) area.
Rev. A 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. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2017 Analog Devices, Inc. All rights reserved. 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 ADP1765 DEVICES FOR HIGH CURRENT APPLICATIONS THERMAL CONSIDERATIONS PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE