Datasheet ADP7182 (Analog Devices)

–28 V, −200 mA, Low Noise, Linear Regulator Data Sheet ADP7182 FEATURES TYPICAL APPLICATION CIRCUITS Low noise: 18 μV rms C C IN OUT Power supply rejection ratio (PSRR): 66 dB at 10 kHz at V 2.2µF 2.2µF OUT = −3 V Positive or negative enable logic GND Stable with small 2.2 μF ceramic output capacitor VIN = –8V VIN VOUT VOUT = –5V Input voltage range: −2.7 V to −28 V ON ADP7182 2V Maximum output current: −200 mA OFF 0V EN NC
001
Low dropout voltage: −185 mV at −200 mA load –2V ON
10703-
Initial accuracy: ±1%
Figure 1. ADP7182 with Fixed Output Voltage, VOUT = −5 V
Accuracy over line, load, and temperature +2% maximum/−3% minimum C C IN OUT 13kΩ 2.2µF 2.2µF Low quiescent current, IGND = −650 μA with −200 mA load GND Low shutdown current: −2 μA 40.2kΩ VIN = –8V VIN VOUT VOUT = –5V Adjustable output from −1.22 V to −VIN + VDO ON ADP7182 Current-limit and thermal overload protection 2V 6- and 8-lead LFCSP and 5-lead TSOT OFF 0V EN ADJ
002
–2V
03-
Supported by ADIsimPower tool ON
107 Figure 2. ADP7182 with Adjustable Output Voltage, VOUT = −5 V
APPLICATIONS Regulation to noise sensitive applications Analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, precision amplifiers Communications and infrastructure Medical and healthcare Industrial and instrumentation GENERAL DESCRIPTION
The ADP7182 is a CMOS, low dropout (LDO) linear regulator The following fixed output voltages are available from stock: −5 V that operates from −2.7 V to −28 V and provides up to −200 mA (3 mm × 3 mm LFCSP), −1.8 V, −2.5 V, −3 V, −5 V (TSOT), −1.2 V, of output current. This high input voltage LDO is ideal for regu- −1.5 V, −2.5 V, −5 V (2.00 mm × 2.00 mm LFCSP). Additional lation of high performance analog and mixed signal circuits voltages are available by special order. operating from −27 V down to −1.2 V rails. Using an advanced The ADP7182 regulator output noise is 18 μV rms independent proprietary architecture, it provides high power supply rejection of the output voltage. The enable logic is capable of interfacing and low noise, and achieves excellent line and load transient with positive or negative logic levels for maximum flexibility. response with a small 2.2 μF ceramic output capacitor. The ADP7182 is available in 5-lead TSOT, 6- and 8-lead LFCSP The ADP7182 is available in fixed output voltage and an packages for a small, low profile footprint. adjustable version that allows the output voltage to range from −1.22 V to −VIN + VDO via an external feedback divider.
Rev. M 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 ©2013–2019 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 TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITANCE, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ADJUSTABLE MODE OPERATION APPLICATIONS INFORMATION ADIsimPower DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties ENABLE PIN OPERATION SOFT START NOISE REDUCTION OF THE ADJUSTABLE ADP7182 CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS Thermal Characterization Parameter, ΨJB PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE