HT0740
High Voltage, Isolated MOSFET Driver
Features
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±400V input to output isolation
Low input logic current, 500µA max
No external voltage supply required
Floating isolated output drivers
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
®
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
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Telecommunications
Modems
Solid state relays
High side switches
High end audio switches
Avionics
ATE
Block Diagram
Isolation
Barrier
VIN
1
Logic &
Internal
Clock
R
4
+
VOUT
–
3
Driver
10R
R
GND
7
V
ISO
SUPERTEX [ Supertex, Inc ]
