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SC442728CPB, SC442729, SC4431

Table of contents:
Info of SC442728CPB
Info of SC442729
Info of SC4431

SC442728CPB, SC442729, SC4431 Selling Leads, Datasheet

MFG:VISHA Package Cooled:MOT D/C:2008+

SC442728CPB, SC442729, SC4431 Datasheet download

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Part Number: SC442728CPB

MFG: VISHA

Package Cooled: MOT

D/C: 2008+

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SC4431 General Description

The SC4431 is a four terminal device for regulating an isolated power supply with very low output voltage.

It is intended to be used as a replacement for three terminal shunt regulators such as SC431L where the output voltage is too low for them to function in conjunction with an opto-isolator. It achieves this by having seperate supply and output pins, allowing the output to sink current at voltages as low as 0.2V, while the supply pin still has sufficient voltage for the device to function. In this way, allowing for a 1.6V drop through an opto-isolator diode, regulation down to 1.8V out can be achieved.

The SC4431 shunt regulator is available with three initial reference voltage accuracies (0.5%, 1.0% and 2.0%) in the space saving 5-lead SOT-23 package. The three voltage tolerances allow the designer the opportunity to select the proper cost/tolerance for their application.

SC4431 Maximum Ratings

Parameter	Symbol	Maximum	Units
Input Supply Voltage	V_CC	-0.5 to +16	V
Output Voltage	V_OUT	-0.5 to VCC	V
Reference Voltage	V_REF	-0.5 to +4	V
Continuous Output Current	I_OUT	40	mA
Reference Input Current	I_REF	5	mA
Operating Ambient Temperature Range	T_A	-40 to +85	°C
Operating Junction Temperature Range	T_J	-40 to +150	°C
Storage Temperature Range	T_STG	-65 to +150	°C
Thermal Impedance Junction to Ambient	_JA	256	°C/W
Thermal Impedance Junction to Case	_JC	81	°C/W
Power Dissipation at T_A= 25°C	P_D	475	mW
Lead Temperature (Soldering) 10 seconds	T_LEAD	300	°C
ESD Rating (Human Body Model)	ESD	2	kV

SC4431 Features

• Trimmed bandgap design - initial accuracies to + 0.5%
• 40mA drive capability
• Wide supply voltage range - 1.5V to 15V
• Low supply current - typically 110A
• Full industrial temperature range

SC4431 Typical Application

•Opto driver for very low output voltage isolated power supplies

SC4431 Connection Diagram

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