FAN1585A

www.fairchildsemi.com

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www.fairchildsemi.com

FAN1585A
5A Adjustable/Fixed Low Dropout Linear Regulator

Features
Fast transient response Low dropout voltage at up to 5A Load regulation: 0.05% typical Trimmed current limit On-chip thermal limiting Packages: TO-220, TO-252, TO-263 and TO-263 Centercut

Description
The FAN1585A, FAN1585A-1.5, and FAN1585A-1.8 are low dropout three-terminal regulators with 5A output current capability. These devices have been optimized for low voltage applications including VTT bus termination for FC-PGA, where transient response and minimum input voltage are critical. The FAN1585A-1.5 offers fixed 1.5V with 5A current capabilities for AGTL bus VTT termination for FC-PGA. The FAN1585A is ideal for low voltage microprocessor applications requiring a regulated output from 1.5V to 3.6V with an input supply of 5V or less, or for FC-PGA applications with significant trace resistance. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperatures. The FAN1585A series regulators are available in the industrystandard TO-220, TO-252, TO-263 and TO-263 Centercut power packages.

Applications
AGTL bus supply for FC-PGA Low voltage logic supply Post regulator for switching supply 3.3V to 1.5V linear regulator 5V to 1.8V linear regulator

Typical Applications
VIN 3.3V 22 F FAN1585A VOUT VIN ADJ R1 124 R2 24.9 VOUT VREF(1 R2/R1) IAdj R2 1.5V at 5A 22 F

VIN 3.3V 22 F

FAN1585A-1.5 VIN VOUT GND

1.5V at 5A 22 F

REV. 1.1.6 7/8/05