HT0740 High Voltage Isolated MOSFET Driver Ordering Information Input to Output Isolation Voltage Package Option 8-Pin Narrow Body SOIC ±400V HT0740LG Features General Description ❏ ±400V input to output isolation The Supertex HT0740 is a single channel high voltage, low input current isolated driver utilizing Supertex’s proprietary HVCMOS® 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. ❏ No external voltage supply required ❏ Low input logic current, 500µA max ❏ Floating isolated output ❏ 5.0V logic compatible Applications ❏ Telecommunications ❏ Modems Pin Configuration ❏ Solid state relays ❏ High side switches ❏ High end audio switches ❏ Avionics ❏ ATE Absolute Maximum Ratings1 Input to Output Isolation Voltage, VISO ±400V VIN 1 8 N/C NC 2 7 GND -VOUT 3 6 N/C +VOUT 4 5 N/C Logic Input Voltage, VIN –0.5 to +7.0V Operating Temperature –40°C to +85°C top view –55°C to +150°C SO-8 Storage Temperature Soldering Temperature2 300°C Note: 1. All voltages are referenced to ground. 2. Distance of 1.6mm from case for 10 seconds. 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, 1 refer to the most current databook or to the Legal/Disclaimer page on the Supertex website. HT0740 Electrical Characteristics (Over recommended operating conditions, TA = -40°C to +85°C unless otherwise specified) DC Characteristics Symbol Parameter Min Typ Max Unit Conditions IH Logic input current high 500 µA VIN = 5.0V ILQ Logic input current low (quiescent) 10 µA VIN = 0.5V VOUT Output voltage across output terminals 4.5 V VIN = 3.15V, No load 8.5 V VIN = 4.5V, No load V No load VIN Input voltage for zero output 0.8 VISO Input to output isolation voltage V ±400 AC Characteristics Symbol Parameter Min Typ Max Unit Conditions td(ON) Turn on delay time 50 µs See timing diagram and test circuit tr Rise time 650 µs CL = 600pF, TA=25°C td(OFF) Turn off delay time 150 µs tf Fall time 3.0 ms Max Unit 3.15 5.5 V Recommended Operating Conditions Symbol Parameter Min Typ VIH Logic input high voltage VIL Logic input low voltage 0 0.5 V TA Operating temperature -40 +85 °C Conditions Block Diagram Isolation Barrier R VIN GND 1 Logic & Internal Clock Driver 4 + VOUT – 10R R 3 7 VISO 2 R=158KΩ ±47% HT0740 Timing Diagram 4.5V VIN 50% 50% 0V 90% 90% VOUT 10% 10% td(ON) tr td(OFF) tf Test Circuit 4.5V 1 0V + VIN – GND VOUT VOUT HT0740 7 4 3 CL = 600pF 12/13/010 ©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