5.6 Power Ratings

VDD = 34V, TA = 125℃, TJ = 150℃, device soldered on the device evaluation board.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PD

Maximum power dissipation

VDD = 34V, IQ = 140μA, no load at VOUT

TBD

μW

5.7 Safety-Related Certifications

UL

UL 1577 Component Recognition Program

Certified according to IEC 62368-1 CB

File number: Pending

Certificate number: Pending

5.8 Safety Limiting Values

Safety limiting(1) intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IS

Safety input, output, or supply current

RθJA = 99.5°C/W, VI = 5V, TJ = 150°C, TA = 25°C

TBD

mA

PS

Safety input, output, or total power

RθJA = 99.5°C/W, TJ = 150°C, TA = 25°C

TBD

W

TS

Maximum safety temperature

150

℃

(1)

The maximum safety temperature, TS, has the same value as the maximum junction temperature, TJ, specified for the device. The

IS and PS parameters represent the safety current and safety power, respectively. The maximum limits of IS and PS should not be

exceeded. These limits vary with the ambient temperature, TA.

The junction-to-air thermal resistance, RθJA, in the Thermal Information table is that of a device installed on a device evaluation board.

Use these equations to calculate the value for each parameter:

TJ = TA + RθJA × P, where P is the power dissipated in the device.

TJ(max) = TS = TA + RθJA × PS, where TJ(max) is the maximum allowed junction temperature.

PS = IS × VI, where VI is the maximum input voltage.

ISOTMP35R

SNIS244 – SEPTEMBER 2025

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