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FAN1581 Fiches technique(PDF) 1 Page - Fairchild Semiconductor |
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FAN1581 Fiches technique(HTML) 1 Page - Fairchild Semiconductor |
1 / 13 page www.fairchildsemi.com Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation. REV. 1.2.0 11/6/03 Features • Ultra Low dropout voltage, 0.4V typical at 5A • 1.2V Versions available for GTL termination • Remote sense operation • Fast transient response • Load regulation: 0.05% typical • 0.5% typical initial accuracy • On-chip thermal limiting • TO-263, TO-252 and TO-220 packages Applications • Support of GTL+ bus supply • Low voltage logic supply • Embedded Processor supplies • Split plane regulator • 2.5V, and 1.8V Logic Families • DDR Termination Supply Description The FAN1581, FAN1581-1.2, FAN1581-1.5, and FAN1581- 2.5 are ultra-low dropout regulators with 5A output current capability. These devices have been optimized for low volt- age applications including VTT bus termination, where tran- sient response and minimum input voltage are critical. The FAN1581 is ideal for low voltage microprocessor applica- tions requiring a regulated output from 1.3V to 5.7V with a power input supply of 1.75V to 6.5V. The FAN1581-1.5 offers fixed 1.5V with 5A current capabilities for GTL+ bus VTT termination. Additionally, the FAN1581-1.2 offers fixed 1.2V output for CPU Bus termination. The FAN1581-2.5 offers fixed 2.5V with 5A current capability for logic IC operation and processors while minimizing the overall power dissipation. Current limit ensures controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create exces- sive junction temperatures. The FAN1581 series regulators are available in the 5-pin TO-263, TO-252 and TO-220 packages. Typical Applications 22 µF 22 µF VCNTL = 5V 2.1V at 5A 10 µF VIN = 3.3V + 10 µF + + VIN VSENSE VCNTL Adj VOUT FAN1581 22 µF VCNTL = 5V 2.5V at 5A 10 µF VIN = 3.3V + 1 µF + 1 µF + 1 µF + 1 µF + + VIN VSENSE VCNTL GND VOUT FAN1581–2.5 86.6 Ω 124 Ω VCNTL = 5V 1.2V at 5A VIN = 3.3V VIN VSENSE VCNTL Gnd VOUT FAN1581-1.2 22 µF VCNTL = 12V 5V at 5A 10 µF VIN = 5.75V + + VIN VSENSE VCNTL Adj VOUT FAN1581 374 Ω 124 Ω FAN1581 5A Adjustable/Fixed Ultra Low Dropout Linear Regulator |
Numéro de pièce similaire - FAN1581 |
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Description similaire - FAN1581 |
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