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CMPWR150 Datasheet(PDF) 1 Page - ON Semiconductor |
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CMPWR150 Datasheet(HTML) 1 Page - ON Semiconductor |
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1 / 15 page  500mA/3.3V SmartORTM Power Regulator CMPWR150 ©2010 SCILLC. All rights reserved. Publication Order Number: June 2010 Rev. 3 CMPWR150/D Features • Automatic detection of V CC input supply • Drive output logic to control external switch • Glitch-free output during supply transitions • 500mA output maximum load current • Built-in hysteresis during supply selection • Controller operates from either V CC or VOUT • 8-pin Power SOIC thermal package • RoHS compliant (lead-free) finishing Applications • PCI adapter cards • Network Interface Cards (NICs) • Dual power systems • Systems with standby capabilities • USB powered devices such as printers, scanners, MP3 players and Zip drives • See Application Note AP-211 Product Description The CMPWR150 is a low dropout regulator that delivers up to 500mA of load current at a fixed 3.3V output. An internal threshold level (typically 4.1V) is used to prevent the regulator from being operated below dropout voltage. The device continuously monitors the input supply and will automatically disable the regulator when V CC falls below the threshold level. When the regulator is disabled, the control signal “Drive” (Active Low) is enabled, which allows an external PMOS switch to power the load from an auxiliary 3.3V supply. When V CC is restored to a level above the select threshold, the control signal for the external PMOS switch is disabled and the regulator is once again enabled. All the necessary control circuitry needed to provide a smooth and automatic transition between the supplies has been incorporated. This allows V CC to be dynamically switched without loss of output voltage. The CMPWR150 is housed in an 8-pin SOIC thermally enhanced package which is ideal for space critical applications. The CMPWR150 is available with RoHS compliant lead-free finishing. |
Número de pieza similar - CMPWR150 |
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Descripción similar - CMPWR150 |
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