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ADP3331 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADP3331 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 12 page REV. A a ADP3331 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. 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 companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. Adjustable Output Ultralow IQ, 200 mA, SOT-23, anyCAP® Low Dropout Regulator FUNCTIONAL BLOCK DIAGRAM THERMAL PROTECTION CC IN ADP3331 OUT GND Q1 SD BAND GAP REF DRIVER gm ERR FB Q2 FEATURES High Accuracy over Line and Load: 0.7% @ 25 C, 1.4% over Temperature Ultralow Dropout Voltage: 140 mV (Typ) @ 200 mA Can Be Used as a High Current (>1 A) LDO Controller Requires Only C O = 0.47 F for Stability anyCAP = Stable with Any Type of Capacitor (Including MLCC) Current and Thermal Limiting Low Noise Low Shutdown Current: 10 nA Typical 2.6 V to 12 V Supply Range 1.5 V to 11.75 V Output Range –40 C to +85 C Ambient Temperature Range Ultrasmall Thermally Enhanced Chip-on-Lead™ SOT-23-6 Lead Package APPLICATIONS Cellular Telephones Notebook, Palmtop Computers Battery-Powered Systems PCMCIA Regulators Bar Code Scanners Camcorders, Cameras GENERAL DESCRIPTION The ADP3331 is a member of the ADP330x family of precision low dropout anyCAP voltage regulators. The ADP3331 operates with an input voltage range of 2.6 V to 12 V and delivers a load current up to 200 mA. The ADP3331 stands out from the conventional LDOs with a novel architecture and an enhanced process that enables it to offer performance advantages and higher output current than its competition. Its patented design requires only a 0.47 mF output capacitor for stability. This device is insensi- tive to capacitor equivalent series resistance (ESR), and is stable with any good quality capacitor, including ceramic (MLCC) types for space restricted applications. The ADP3331 achieves excep- tional accuracy of ±0.7% at room temperature and ±1.4% overall accuracy over temperature, line, and load variations. The drop- out voltage of the ADP3331 is only 140 mV (typical) at 200 mA. This device also includes a safety current limit, thermal over- load protection, and a shutdown feature. In shutdown mode, the ground current is reduced to less than 2 mA. The ADP3331 has ultralow quiescent current 34 mA (typical) in light load situations. The SOT-23-6 package has been thermally enhanced using Analog Device’s proprietary Chip-on-Lead feature to maxi- mize power dissipation. VOUT VIN + ADP3331 FB OUT ERR ON OFF SD GND IN C2 0.47 F C1 0.47 F + EOUT R3 330k R1 R2 64 Figure 1. Typical Application Circuit |
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Mô tả tương tự - ADP3331 |
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