FAN1084M-3.3 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

FAN1084M-3.3

4.5A Adjustable/Fixed Low Dropout Linear Regulator

Fairchild Semiconductor 

www.fairchildsemi.com

FAN1084

4.5A Adjustable/Fixed Low Dropout Linear Regulator

Features

• Fast transient response

• Low dropout voltage at up to 4.5A

• Load regulation: 0.5% typical

• On-chip thermal limiting

• Standard TO-220, TO-263 center cut, and TO-252

packages

Applications

• Desktop PCs, RISC and embedded processors’ supply

• GTL, SSTL logic Reference bus supply

• Low voltage VCC logic supply

• Battery-powered circuitry

• Post regulator for switching supply

• Cable and ADSL modems’ DSP core supply

• Set Top Boxes and Web Boxes modules’ supply

Application Diagrams

Description

The FAN1084, FAN1084-1.5, and FAN1084-3.3 are low

dropout three-terminal regulators with 4.5A output current

capability. These devices have been optimized for low voltage

applications including VTT bus termination, where transient

response and minimum input voltage are critical. The

FAN1084 is ideal for low voltage microprocessor applica-

tions requiring a regulated output from 1.5V to 3.6A with an

input supply of 5V or less. The FAN1084-1.5 offers fixed

1.5V with 4.5A current capabilities for GTL+ bus VTT

termination. The FAN1084-3.3 offers a fixed 3.3V output

at 4.5A.

On-chip thermal limiting provides protection against any

combination of overload and ambient temperature that

would create excessive junction temperatures.

The FAN1084 series regulators are available in the industry-

standard TO-220, TO-263 center cut, and TO-252 (DPAK)

power packages.

VIN = 5V

+

10µF

FAN1084

VIN

VOUT

ADJ

124Ω

2.5V at 4.5A

+

22µF

124Ω

VIN = 3.3V

+

10µF

FAN1084-1.5

VIN

VOUT

GND

1.5V at 4.5A

+

22µF

REV. 1.0.8 11/10/03

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