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ADM869LARQ Arkusz danych(PDF) 1 Page - Analog Devices |
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ADM869LARQ 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 ADM869L 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., 2000 2 A, High-Side P-Channel Switch with Current Limit and Thermal Shutdown FUNCTIONAL BLOCK DIAGRAM TEMPERATURE SENSOR AND CONTROL CIRCUITRY MAIN FET MIRROR FET IN (2.7V TO 5.5V) OUT RSET SET FAULT GND ON RPULLUP 10k TO 100k VPULLUP 0 TO 5.5V ON ON ON ON OVERTEMP ADM869L CURRENT LIMIT AMPLIFIER 1.24V BANDGAP REFERENCE MIRROR AMPLIFIER 0.1 F 22 F FEATURES 2 A Load Current 45 m On Resistance User-Settable Current Limit 12 A Typical Quiescent Current 10 nA Typical Shutdown Current 40 nA Typical Switch Off Leakage Short-Circuit Protection Thermal Shutdown FAULT Output Small, 16-Lead QSOP Package APPLICATIONS Desktop Computers Palmtop Computers Notebook Computers Hand-Held Instruments Universal Serial Bus (USB) GENERAL DESCRIPTION The ADM869L is a logic controlled P-channel switch with low on resistance, capable of sourcing up to 2 A from supply voltages between 2.7 V and 5.5 V. A user-settable current limit allows the trip current to be set between 400 mA and 2 A with an accuracy of ±21%. This allows the system power supply to be protected against short circuits and surge currents in peripheral loads powered via the ADM869L. Over-current and over- temperature conditions are signalled by a FAULT output. The ADM869L also offers low quiescent current of typically 12 µA and shutdown current of typically 10 nA. |
Podobny numer części - ADM869LARQ |
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Podobny opis - ADM869LARQ |
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