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ADP3302 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADP3302 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 8 page REV. A 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADP3303 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1998 High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator FUNCTIONAL BLOCK DIAGRAM 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 330k EOUT C2 0.47 F VOUT = +5V ON OFF SD C1 0.47 F VIN SD GND Figure 1. Typical Application Circuit FEATURES High Accuracy Over Line and Load 0.8% @ at +25 C, 1.4% Over Temperature Ultralow Dropout Voltage: 180 mV (Typ) @ 200 mA Requires Only CO = 0.47 F 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 A Thermally Enhanced SO-8 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 GENERAL DESCRIPTION The ADP3303 is a member of the ADP330x family of preci- sion low dropout anyCAP voltage regulators. The ADP3303 stands out from the conventional LDOs with a novel architec- ture, an enhanced process and a new package. Its patented design requires only a 0.47 µF output capacitor for stability. This device is insensitive to capacitor Equivalent Series Resis- tance (ESR) and is stable with any good quality capacitor, in- cluding 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 new architecture and process, ADI’s new proprietary thermally enhanced package (Thermal Coastline) can handle 1 W of power dissipation without external heatsink or large copper surface on the PC board. This keeps PC board real estate to a minimum and makes the ADP3303 very attrac- tive 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: ADP3300 (50 mA, SOT-23) ADP3301 (100 mA) ADP3302 (100 mA, Dual Output) ADP3307 (100 mA, SOT-23-6) ADP3308 (50 mA, SOT-23-5) ADP3309 (100 mA, SOT-23-5) anyCAP is a trademark of Analog Devices Inc. |
Podobny numer części - ADP3302 |
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Podobny opis - ADP3302 |
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