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Table Of Contents

 2016 Microchip Technology Inc. DS20005628A-page 1

HT0740

Features

• ±400V Input to Output Isolation

• Low Input Logic Current, 500 µA (Maximum)

• No External Voltage Supply Required

• Floating Isolated Output Drivers

• 5V Logic Compatible

Applications

• Telecommunications

• Modems

• Solid State Relays

• High-side Switches

• High-end Audio Switches

• Avionics

• Automatic Test Equipment

General Description

The HT0740 is a single-channel high-voltage low input

current isolated driver that uses the 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 +V

OUT

and –V

OUT

when the logic input

is at a logic high. The HT0740 does not require any

external power supplies. The internal supply voltage is

provided by the logic input when it is in high state.

Package Type

8-lead SOIC

(Top view)

VIN

-VOUT

+VOUT

GND

See Table 2-1 for pin information.

High-Voltage Isolated MOSFET Driver

Summary of content (12 pages)

PAGE 1
HT0740 High-Voltage Isolated MOSFET Driver Features General Description • • • • • The HT0740 is a single-channel high-voltage low input current isolated driver that uses the 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 +VOUT and –VOUT when the logic input is at a logic high. The HT0740 does not require any external power supplies.
PAGE 2
HT0740 Functional Block Diagram Isolation Barrier 1 VIN 4 Logic & Internal Clock R Driver 10R + VOUT - R 7 GND VISO 3 R = 158kΩ ± 47%  DS20005628A-page 2  2016 Microchip Technology Inc.
PAGE 3
HT0740 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† Input to Output Isolation Voltage, VISO................................................................................................................. ±400V Logic Input Voltage, VIN ..............................................................................................................................–0.5V to +7V Operating Ambient Temperature, TA .........................................................................................
PAGE 4
HT0740 TEMPERATURE SPECIFICATIONS Parameter Sym. Min. Typ. Max. Unit Operating Ambient Temperature TA –40 — +85 °C Storage Temperature TS –55 — +150 °C JA — 101 — °C/W Conditions TEMPERATURE RANGE PACKAGE THERMAL RESISTANCE 8-lead SOIC DS20005628A-page 4  2016 Microchip Technology Inc.
PAGE 5
HT0740 2.0 PIN DESCRIPTION The details on the pins of HT0740 are listed on Table 2-1. Refer to Package Type for the location of pins. TABLE 2-1: PIN FUNCTION TABLE Pin Number Pin Name Description 1 VIN Logic input 2 NC No connect 3 –VOUT Negative output 4 +VOUT 5 NC No connect Positive output 6 NC No connect 7 GND 8 NC Ground No connect  2016 Microchip Technology Inc.
PAGE 6
HT0740 3.0 FUNCTIONAL DESCRIPTION 4.5V VIN 50% 50% 0V 90% 90% 10% VOUT 10% td(OFF) tf td(ON) tr FIGURE 3-1: Timing Waveforms. 4.5V 1 0V VIN + 4 VOUT 7 GND - VOUT CL = 600pF 3 HT0740 FIGURE 3-2: DS20005628A-page 6 Test Circuit.  2016 Microchip Technology Inc.
PAGE 7
HT0740 4.0 PACKAGING INFORMATION 4.1 Package Marking Information 8-lead SOIC Example XXXXXXXX e3 YYWW NNN HT0740LG e3 1620 789 Legend: XX...X Y YY WW NNN e3 * Note: Product Code or Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free.
PAGE 8
HT0740 Note: For the most current package drawings, see the Microchip Packaging Specification at www.microchip.com/packaging. DS20005628A-page 8  2016 Microchip Technology Inc.
PAGE 9
HT0740 APPENDIX A: REVISION HISTORY Revision A (October 2016) • Converted Supertex Doc# DSFP-HT0740 to Microchip DS20005628A • Changed the packaging quantity of the 8-lead SOIC LG from 2500/Reel to 3300/Reel • Made minor text changes throughout the document  2016 Microchip Technology Inc.
PAGE 10
HT0740 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. PART NO.
PAGE 11
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 12
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