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ADP3303 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADP3303 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 16 page High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator Data Sheet ADP3303 FEATURES High accuracy over line and load ±0.8% at +25°C, ±1.4% over temperature Ultralow dropout voltage: 180 mV (typical) at 200 mA Requires only CO = 0.47 µF for stability anyCAP = stable with all types of capacitors (including MLCC) 3.2 V to 12 V supply range Current and thermal limiting Low noise Dropout detector Low shutdown current: < 1 µA Thermally enhanced SOIC_N package Excellent Line and Load Regulation Performance APPLICATIONS Cellular telephones Notebook, palmtop computers Battery powered systems Portable instruments Post regulator for switching supplies Bar code scanners FUNCTIONAL BLOCK DIAGRAMS Figure 1. Functional Block Diagram Figure 2. Typical Application Circuit GENERAL DESCRIPTION The ADP3303 is a member of the ADP330x family of precision low dropout anyCAP1 voltage regulators. The ADP3303 stands out from the conventional LDOs with a different architecture, an enhanced process, and a different package. Its patented design requires only a 0.47 µF output capacitor for stability. This device is insensitive to capacitor Equivalent Series Resistance (ESR) and is stable with any good quality capacitor, including ceramic types (MLCC) for space restricted applications. The ADP3303 achieves exceptional accuracy of ±0.8% at room temperature and ±1.4% overall accuracy over temperature, line, and load regulations. The dropout voltage of the ADP3303 is only 180 mV (typical) at 200 mA. In addition to the architecture and process, the Analog Devices, Inc., proprietary thermally enhanced package (Thermal Coastline) can handle 1 W of power dissipation without external heatsink or large copper surface on the printed circuit board (PCB). This keeps PCB real estate to a minimum and makes the ADP3303 very attractive for use in portable equipment. The ADP3303 operates with a wide input voltage range from 3.2 V to 12 V and delivers a load current in excess of 200 mA. It features an error flag that signals when the device is about to lose regulation or when the short circuit or thermal overload protection is activated. Other features include shutdown and optional noise reduction capabilities. The ADP330x anyCAP LDO family offers a wide range of output voltages and output current levels: Table 1. ADP330x anyCAP LDO Family Model Output Current Package Options ADP3300 50 mA 6-Lead SOT-23 ADP3301 100 mA 8-Lead SOIC_N ADP3309 100 mA 5-Lead SOT-23 1 anyCAP is a trademark of Analog Devices, Inc. Q2 THERMAL PROTECTION gm Q1 CC BANDGAP REF DRIVER R1 R2 ADP3303 OUT IN ERR SD GND ADP3303-5.0 5 4 6 3 NR OUT IN 1 2 7 8 ERR 330 kΩ EOUT C2 0.47µF VOUT = +5V ON OFF SD C1 0.47µF VIN SD GND Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
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Mô tả tương tự - ADP3303_15 |
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