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TC18C46

TelCom
Part Number TC18C46
Manufacturer TelCom
Description CMOS CURRENT MODE PWM CONTROLLER
Published Nov 9, 2013
Detailed Description TC18C46 TC28C46 TC38C46 CMOS CURRENT MODE PWM CONTROLLER FEATURES s s s s s s s s s s s s s s s s s s s Isolated Output ...
Datasheet PDF File TC18C46 PDF File

TC18C46
TC18C46

Overview
TC18C46 TC28C46 TC38C46 CMOS CURRENT MODE PWM CONTROLLER FEATURES s s s s s s s s s s s s s s s s s s s Isolated Output Drive Low Power CMOS Construction Low Supply Current .
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2mA Typ.
Wide Supply Voltage Operation .
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8V to 18V Latch-Up Immunity .
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500mA on Outputs Above and Below Rail Input Protection .
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6V High Output Drive .
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500mA Peak Current Mode Control Fast Rise/Fall Time .
50nsec @ 1000pF High Frequency Operation .
500kHz UV Hysteresis Guaranteed Programmable Current Limit Shutdown Pin Available Double Ended Soft Start Low Prop Delay Current Amp to Output .
< 350nsec Typ.
Low Prop Delay Shutdown to Output .
< 400nsec Typ.
TC38C46Pin Compatible with Unitrode UC3846 ESD Protected .
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±2 kV 1 GENERAL DESCRIPTION The TC38C46 is a current mode CMOS PWM control IC.
It draws only 2 mA supply current, so it can be driven without a costly 50-60 Hz transformer.
The output drive stage is capable of high drive currents, 300mA typical.
The TC38C46 is pin compatible with earlier bipolar products so that designers can easily update older designs.
A number of improvements have been added.
This second generation part has been designed with an isolated drive stage.
Unlike its cousin, the TC170, the output stage of the TC38C46 can be run from a separate power supply such as a secondary winding on an output transformer.
This allows for bootstrap start-up of the power supply.
2 3 4 5 6 ORDERING INFORMATION Part No.
TC18C46MJE TC28C46EOE TC28C46EPE TC38C46COE TC38C46CPE Configuration Non-Inverting Non-Inverting Non-Inverting Non-Inverting Non-Inverting Pkg.
/Temperature 16-Pin CerDIP – 55°C to +125°C 16-Pin SOIC (Wide) – 40 °C to +85°C 16-Pin Plastic DIP (Narrow) – 40°C to +85°C 16-Pin SOIC (Wide) 0°C to +70°...


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