FAN1587A

更新时间： 2024-11-22 22:50:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		稳压器
页数	文件大小	规格书
14页	73K
描述
3A Adjustable/Fixed Low Dropout Linear Regulator

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数据手册

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FAN1587A 数据手册

www.fairchildsemi.com

FAN1 5 8 7 A

3 A Ad ju s t a b le /Fix e d Lo w Dro p o u t Lin e a r Re g u la t o r

Features

Description

• Fast transient response

The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are low

dropout three-terminal regulators with 3A output current capa-

bility. These devices have been optimized for low voltage

• Low dropout voltage at up to 3A

• Load regulation: 0.05% typical

• Trimmed current limit

applications including V bus termination, where transient

• On-chip thermal limiting

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

and TO-252 packages

response and minimum input voltage are critical. The

FAN1587A is ideal for low voltage microprocessor applica-

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

input supply of 12V or less. The FAN1587A-1.5 offers ﬁxed

1.5V with 3A current capability for GTL+ bus V termina-

tion. The FAN1587A-3.3 offers ﬁxed 3.3V current capability

for logic IC operation.

Applications

• Pentium^®Class GTL+ bus supply

• Low voltage logic supply

• Post regulator for switching supply

• 12V to 5V linear regulator

• 3.3V to 1.5V linear regulator

Current limit is trimmed to ensure speciﬁed output current and

controlled short-circuit current. On-chip thermal limiting pro-

vides protection against any combination of overload and

ambient temperature that would create excessive junction

temperatures.

The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are

available in the industry-standard TO-220, TO-263, TO-263

center cut, and TO-252 (DPAK) power packages.

Typical Applications

FAN1587A

OUT

= 12V

9V at 3A

22µF

ADJ

22µF

124Ω

768Ω

OUT

= V

REF

(1+R2/R1)+I

*R2

ADJ

FAN1587A-3.3

OUT

= 9V

3.3V at 3A

GND

22µF

65-1587-16

Pentium is a registered trademark of Intel Corporation.

REV. 1.0.5 11/10/03

12 3 4 5 6 7...14

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