HT0740_13 Datasheet, PDF (1/4 Pages) Supertex, Inc – High Voltage, Isolated MOSFET Driver

Supertex inc.
High Voltage,
Isolated MOSFET Driver
HT0740
Features
►►±400V input to output isolation
►►Low input logic current, 500µA max
►►No external voltage supply required
►►Floating isolated output drivers
►►5.0V logic compatible
Applications
►► Telecommunications
►►Modems
►►Solid state relays
►►High side switches
►►High end audio switches
►► Avionics
►► ATE
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.
Block Diagram
Isolation Barrier
1
VIN
7
GND
Logic
&
Internal
Clock
Driver
R
10R
R
4
+
VOUT
-
3
R = 158kΩ ± 47%
V_ISO
Doc.# DSFP-HT0740
B060413
Supertex inc.
www.supertex.com