AMC1204, AMC1204B

SBAS512E – APRIL 2011 – REVISED SEPTEMBER 2015

www.ti.com

6.8 IEC Safety Limiting Values

Safety limiting intends to prevent potential damage to the isolation barrier upon failure of input or output (I/O) circuitry. A

failure of the I/O circuitry 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.

The safety-limiting constraint is the operating virtual junction temperature range specified in the Absolute Maximum Ratings

table. The power dissipation and junction-to-air thermal impedance of the device installed in the application hardware

determine the junction temperature. The assumed junction-to-air thermal resistance in the Thermal Information 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.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Safety input, output, or supply current

10

mA

Maximum case temperature

150

°C

6.9 IEC 61000-4-5 Ratings

PARAMETER

TEST CONDITIONS

VALUE

UNIT

Surge immunity

1.2/50-

μs voltage surge and 8/20-μs current surge

±6000

V

6.10 IEC 60664-1 Ratings

PARAMETER

TEST CONDITIONS

SPECIFICATION

Basic isolation group

Material group

II

Rated mains voltage

I-IV

I-IV

Installation classification

I-III

I-III

8

Submit Documentation Feedback

Copyright © 2011–2015, Texas Instruments Incorporated

Product Folder Links: AMC1204 AMC1204B