FOD2741BTV

更新时间： 2024-02-24 23:35:49

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		光电放大器输出元件
页数	文件大小	规格书
15页	189K
描述
OPTICALLY ISOLATED ERROR AMPLIFIER

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技术参数
数据手册

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FOD2741BTV 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	DIP-8	Reach Compliance Code：	compliant
HTS代码：	8541.40.80.00	风险等级：	5.77
Is Samacsys：	N	其他特性：	UL APPROVED, VDE APPROVED
Coll-Emtr Bkdn Voltage-Min：	70 V	配置：	SINGLE
标称电流传输比：	100%	最大暗电源：	50 nA
最大正向电流：	0.02 A	最大绝缘电压：	5000 V
JESD-609代码：	e3	元件数量：	1
最高工作温度：	85 °C	最低工作温度：	-25 °C
光电设备类型：	TRANSISTOR OUTPUT OPTOCOUPLER	端子面层：	Matte Tin (Sn)
Base Number Matches：	1

FOD2741BTV 数据手册

OPTICALLY ISOLATED

ERROR AMPLIFIER

FOD2741A

FOD2741B

FOD2741C

DESCRIPTION

The FOD2741 Optically Isolated Ampliﬁer consists of the popular KA431 precision

programmable shunt reference and an optocoupler.The optocoupler is a gallium arsenide

(GaAs) light emitting diode optically coupled to a silicon phototransistor. It comes in 3

grades of reference voltage tolerance = 2%, 1%, and 0.5%.

The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding

temperature coefﬁcient of 50 ppm/°C. It is primarily intended for use as the error ampliﬁer/

reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc con-

verters.

When using the FOD2741, power supply designers can reduce the component count and

save space in tightly packaged designs.The tight tolerance reference eliminates the need

for adjustments in many applications. The device comes in a 8-pin dip white package.

FEATURES

FUNCTIONAL BLOCK DIAGRAM

•

Optocoupler, precision reference and error ampliﬁer in single package

2.5V reference

CTR 100% to 200%

5,000V RMS isolation

LED

UL approved E90700, Volume 2

CSA approval 1296837

VDE approval 40002463

BSI approval 8702, 8703

•

Low temperature coefﬁcient 50 ppm/°C max

COMP

GND

FOD2741A: tolerance 0.5%

FOD2741B: tolerance 1%

FOD2741C: tolerance 2%

APPLICATIONS

•

Power supplies regulation

DC to DC converters

PIN DEFINITIONS

Pin Number

Pin Name

Pin function description

Not connected

Phototransistor Collector

Phototransistor Emitter

Not connected

GND

COMP

Ground

Error Ampliﬁer Compensation. This pin is the output of the error ampliﬁer. *

Voltage Feedback. This pin is the inverting input to the error ampliﬁer

Anode LED. This pin is the input to the light emitting diode.

LED

* The compensation network must be attached between pins 6 and 7.

Page 1 of 15

12/9/04

12 3 4 5 6 7...15

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