Datasheet > FAN1581M

FAN1581M

更新时间： 2024-11-18 23:51:43

品牌	Logo	应用领域
其他 - ETC		稳压器调节器输出元件
页数	文件大小	规格书
11页	108K
描述
Positive Adjustable Voltage Regulator

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FAN1581M 数据手册

www.fairchildsemi.com

FAN1581

5A Adjustable/Fixed Ultra Low Dropout

Linear Regulator

Features

Description

• Ultra Low dropout voltage, 0.4V typical at 5A

• Remote sense operation

• Fast transient response

• Load regulation: 0.05% typical

• 0.5% initial accuracy

• On-chip thermal limiting

The FAN1581, FAN1581-1.5, and FAN1581-2.5 are ultra-low

dropout regulators with 5A output current capability. These

devices have been optimized for low voltage applications

including V_TTbus termination, where transient response and

minimum input voltage are critical. The FAN1581 is ideal

for low voltage microprocessor applications requiring a reg-

ulated 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 V_TTtermination. The

FAN1581-2.5 offers ﬁxed 2.5V with 5A current capability

for logic IC operation and processors while minimizing the

overall power dissipation.

• 5-Pin SPAK and TO-263 packages

Applications

• Pentium^®Processors

• PowerPC^™, AMD K5 and K6 processors

• Pentium support of GTL+ bus supply

• Low voltage logic supply

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.

• Embedded Processor supplies

• Split plane regulator

• New 2.5V and 1.8V Logic Families

The FAN1581 series regulators are available in the 5-Pin

SPAK and TO-263 power packages.

Typical Applications

V_IN= 3.3V

10µF

V_IN

V_SENSE

FAN1581–2.5

V_OUT

2.5V at 5A

V_IN= 3.3V

V_CNTL= 5V

1µF

V_CNTL

V_IN

V_SENSE

22µF

GND

10µF

FAN1581

V_OUT

2.1V at 5A

V_CNTL= 5V

V_CNTL

22µF

Adj

124Ω

V_IN= 5.75V

10µF

V_IN

V_SENSE

86.6Ω

FAN1581

V_OUT

5V at 5A

V_CNTL= 12V

V_CNTL

22µF

Adj

124Ω

374Ω

Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation.

REV. 1.0.2 8/15/01

12 3 4 5 6 7...11

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