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ISO7221CDRG4 Datasheet(PDF) 12 Page - Texas Instruments

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Part # ISO7221CDRG4
Description  DUAL DIGITAL ISOLATORS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ISO7221CDRG4 Datasheet(HTML) 12 Page - Texas Instruments

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DEVICE I/O SCHEMATICS
OUT
8 W
13 W
IN
750kW
500 W
Input
Output
VCC1 VCC1
VCC1
VCC2
IEC SAFETY LIMITING VALUES
ISO7220A, ISO7220C, ISO7220M
ISO7221A, ISO7221C, ISO7221M
SLLS755F – JULY 2006 – REVISED AUGUST 2007
Safety limiting intends to prevent potential damage to the isolation barrier upon failure of input or output circuitry.
A failure of the IO can allow low resistance to ground or the supply and, without current limiting, dissipate
sufficient power to overheat the die and damage the isolation barrier potentially leading to secondary system
failures.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
θJA = 212°C/W, VI = 5.5 V, TJ = 170°C, TA = 25°C
124
Safety input, output, or
IS
SOIC-8
mA
supply current
θJA = 212°C/W, VI = 3.6 V, TJ = 170°C, TA = 25°C
190
TS
Maximum case temperature
SOIC-8
150
°C
The safety-limiting constraint is the absolute maximum junction temperature specified in the absolute maximum
ratings table. The power dissipation and junction-to-air thermal impedance of the device installed in the
application hardware determines the junction temperature. The assumed junction-to-air thermal resistance in the
Thermal Characteristics table is that of a device installed in the JESD51-3, Low Effective Thermal Conductivity
Test Board for Leaded Surface Mount Packages and is conservative. The power is the recommended maximum
input voltage times the current. The junction temperature is then the ambient temperature plus the power times
the junction-to-air thermal resistance.
12
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