50 C

°

0 C

°

60 C

°

0

50

100

V

S

Temperature

3.3V

1.4V

50 C

°

0 C

°

60 C

°

0

50

100

V

S

Temperature

3.3V

1.4V

0

50

100

0

Time(ms)

OUT=High

AtPower-on

OUT=High

AtPower-on

OUT=High

AfterConversion

OUT=Low

AfterConversion

Conversion

Time

t=35ms(max)

D

HYST

=High

HYST

=High

SOH=Low

SET0

SET1

(a)

Time(ms)

(b)

0

50

100

0

Conversion

Time

t=35ms(max)

D

HYST

=High

HYST

=High

SOH=Low

SET0

SET1

1

1

10

TMP303

SBOS486G – JULY 2009 – REVISED JULY 2017

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Product Folder Links: TMP303

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Copyright © 2009–2017, Texas Instruments Incorporated

Feature Description (continued)

8.3.2 TMP303 Power Up and Timing

At device power up, the TMP303 exerts OUT = high, and typically requires 26 ms to return to a low state only if

The tolerance of the thermal response time is largely a result of the differences in conversion time, which varies

from 20 ms to 35 ms; likewise, this conversion does not take place after a power cycle until the supply voltage

has reached a level of at least 1.4 V. This sequence is illustrated in Figure 11.

After the TMP303 powers up, all successive thermal response results for the device are achieved in a time frame

of 0.985 s to 1 s. This period is the minimum time frame required for the push-pull output (OUT) to change its

state from high to low (or conversely) when the device is active.