Description

The ISO8200BQ is a galvanic isolated 8-channel

driver featuring a very low supply current. It

contains 2 independent galvanic isolated voltage

domains (Vcc for the power stage and Vdd for the

digital stage). Additional embedded functions are:

loss of GND protection, undervoltage shutdown

with hysteresis, and reset function for immediate

power output shutdown.

IC is intended to drive any kind of load with one

side connected to ground. Active channel current

limitation combined with thermal shutdown,

(independent for each channel), and automatic

restart, protect the device against overload and

short-circuit. In overload conditions, if junction

temperature overtakes threshold, the channel

involved is turned off and on again automatically

after the IC temperature decreases below a reset

threshold. If this condition causes case

temperature to reach TCR limit threshold, the

overloaded channel is turned off and it only

restarts when case and junction temperature

decrease down to the reset thresholds. Nonoverloaded channels continue operating

normally. An internal circuit provides an OR-wired

non-latched common FAULT indicator

signaling the channel OVT. The FAULT pin is

an open-drain active low fault indication pin.

Features

 Parallel input interface

 Direct and synchronous control mode

 High common mode transient immunity

 Output current: 0.7 A per channel

 Short-circuit protection

 Channel overtemperature protection

 Thermal independence of separate channels

 Common output disable pin

 Case overtemperature protection

 Loss of GNDcc and Vcc protection

 Undervoltage shutdown with auto-restart

and hysteresis

 Overvoltage protection (Vcc clamping)

 Very low supply current

 Common fault open-drain output

 5 V and 3.3 V TTL/CMOS compatible I/Os

 Fast demagnetization of inductive loads

 Reset function for IC output disable

 ESD protection

 IEC 61000-4-2, IEC 61000-4-4, IEC 61000-

4-5 and IEC 61000-4-8 compliant

Applications

 Programmable logic control

 Industrial PC peripheral input/output

 Numerical control machines

 Drivers for all types of loads (resistive,

capacitive, inductive)