FOD2741C

Maximum Collector Emitter Saturation Voltage : 0.4 V
Isolation Voltage : 5000 Vrms
Maximum Forward Diode Voltage : 1.5 V
Minimum Operating Temperature : - 40 C
Maximum Collector Current : 50 mA
Maximum Operating Temperature : + 85 C
Packaging : Bulk
Input Type : DC
Maximum Collector Emitter Voltage : 30 V
Current Transfer Ratio : 200 %
Package / Case : PDIP-8
Maximum Power Dissipation : 145 mW


Features:

•Optocoupler, precision reference and error amplifier in single package
• 2.5V reference
• CTR 100% to 200%
• 5,000V RMS isolation
• UL approved E90700, Volume 2
   CSA approval 1296837
   VDE approval 40002463
   BSI approval 8702, 8703
• Low temperature coefficient 50 ppm/°C max
• FOD2741A: tolerance 0.5%
   FOD2741B: tolerance 1%
   FOD2741C: tolerance 2%


Application

• Power supplies regulation
• DC to DC converters


Pinout




Specifications

Parameter	Symbol	Value	Units
Storage Temperature	TSTG	-55 to +125	°C
Operating Temperature	TOPR	-25 to +85	°C
Lead Solder Temperature	TSOL	260 for 10 sec.	°C
Input Voltage	VLED	37	v
Input DC Current	ILED	20	mA
Collector-Emitter Voltage	VCEO	30	v
Emitter-Collector Voltage	VECO	7	v
Collector Current	IC	50	mA
Input Power Dissipation (note 1)	PD1	145	mW
Transistor Power Dissipation (note 2)	PD2	85	mW
Total Power Dissipation (note 3)	PD3	145	mW

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. FOD2741 comes in 3 grades of reference voltage tolerance = 2%, 1%, and 0.5%.

The Current Transfer Ratio (CTR) ranges from 100% to 200%. FOD2741 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 converters.

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 FOD2741 comes in a 8-pin dip white package


Parameters:

Technical/Catalog Information	FOD2741C
Vendor	Fairchild Optoelectronics Group
Category	Isolators
Voltage - Isolation	5000Vrms
Input Type	DC
Output Type	Transistor
Current - Output / Channel	50mA
Voltage - Output	30V
Vce Saturation (Max)	400mV
Current Transfer Ratio (Min)	100% @ 10mA
Mounting Type	Through Hole
Package / Case	8-DIP
Packaging	Tube
Number of Circuits	1 - Single
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FOD2741C FOD2741C