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| HT0740 High Voltage Isolated MOSFET Driver Ordering Information Input to Output Isolation Voltage 400V Package Option 8-Pin Narrow Body SOIC HT0740LG Features 400V input to output isolation No external voltage supply required Low input logic current, 500A max Floating isolated output 5.0V logic compatible General Description The Supertex HT0740 is a single channel high voltage, low input current isolated driver utilizing Supertex's proprietary HVCMOS(R) technology. It is designed to drive discrete MOSFETs configured as high side switches up to 400V. The HT0740 generates an independent DC isolated voltage across the pair of outputs when the logic input is at a logic high. The HT0740 does not require any external power supplies. The internal supply voltage is supplied from the logic input when it is in the high state. Applications Telecommunications Modems Solid state relays High side switches High end audio switches Avionics ATE VIN 1 2 3 4 8 7 6 5 Pin Configuration N/C GND N/C N/C Absolute Maximum Ratings1 Input to Output Isolation Voltage, VISO Logic Input Voltage, VIN Operating Temperature Storage Temperature Soldering Temperature2 Note: 1. All voltages are referenced to ground. 2. Distance of 1.6mm from case for 10 seconds. NC 400V -VOUT +VOUT -0.5 to +7.0V -40C to +85C -55C to +150C 300C top view SO-8 12/13/01 Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website. 1 HT0740 Electrical Characteristics (Over recommended operating conditions, TA = -40C to +85C unless otherwise specified) DC Characteristics Symbol IH ILQ VOUT VIN VISO Parameter Logic input current high Logic input current low (quiescent) Output voltage across output terminals 4.5 8.5 Input voltage for zero output Input to output isolation voltage 400 0.8 Min Typ Max 500 10 Unit A A V V V V VIN = 5.0V VIN = 0.5V VIN = 3.15V, No load VIN = 4.5V, No load No load Conditions AC Characteristics Symbol td(ON) tr td(OFF) tf Parameter Turn on delay time Rise time Turn off delay time Fall time Min Typ Max 50 650 150 3.0 Unit s s s ms Conditions See timing diagram and test circuit CL = 600pF, TA=25C Recommended Operating Conditions Symbol VIH VIL TA Parameter Logic input high voltage Logic input low voltage Operating temperature Min 3.15 0 -40 Typ Max 5.5 0.5 +85 Unit V V C Conditions Block Diagram Isolation Barrier R VIN 1 Logic & Internal Clock 4 + VOUT - 3 Driver 10R R GND 7 R=158K 47% VISO 2 HT0740 Timing Diagram 4.5V VIN 0V 50% 50% 90% VOUT 90% 10% 10% td(ON) tr td(OFF) tf Test Circuit 4.5V 0V 1 4 VOUT - 3 CL = 600pF VIN + VOUT HT0740 7 GND 12/13/010 (c)2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited. 3 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 * FAX: (408) 222-4895 www.supertex.com |
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