ISL78302A
10
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in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
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without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
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FN7932.2
December 22, 2015
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entry and exit delays are 200ms and 25µs, respectively. Larger
or smaller capacitor values yield proportionately longer or shorter
delay times. The POR exit delay should never be allowed to be
less than 10µs to ensure sufficient immunity against transient
induced false POR triggering.
Overheat Detection
The bandgap provides a proportional-to-temperature current that
is indicative of the temperature of the silicon. This current is
compared with references to determine if the device is in danger
of damage due to overheating. When the die temperature
reaches about +145°C, one or both of the LDOs momentarily
shuts down until the die cools sufficiently. In the overheat
condition, only the LDO sourcing more than 50mA is shut off.
This does not affect the operation of the other LDO. If both LDOs
source more than 50mA and an overheat condition occurs, both
LDO outputs are disabled. Once the die temperature falls back
below about +110°C, the disabled LDOs are re-enabled, and
soft-start automatically takes place.
The ISL78302A provides short-circuit protection by limiting the
output current to about 475mA. If short circuited, an output
current of 475mA will cause die heating. If the short circuit lasts
long enough, the overheat detection circuit will turn off the output.
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.
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest revision.
DATE REVISION CHANGE
December 22, 2015 FN7932.2 On page 4, updated Charged Device Model test method from “JESD22-C101C” to “AEC-Q100-011”.
Updated POD L10.3x3C to current version with changes as follows:
Removed package outline and included center to center distance between lands on recommended land
pattern.
Removed Note 4 “Dimension b applies to the metallized terminal and is measured between 0.18mm and
0.30mm from the terminal tip.” since it is not applicable to this package. Renumbered notes accordingly.
Tiebar Note 4 updated
From: Tiebar shown (if present) is a non-functional feature.
To: Tiebar shown (if present) is a non-functional feature and may be located on any of the 4 sides (or ends).
December 23, 2013 FN7932.1 Page 10
- 2nd line of the disclaimer changed from:
"Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted"
to:
"Intersil Automotive Qualified products are manufactured, assembled and tested utilizing TS16949 quality
systems as noted"
May 21, 2012 FN7932.0 Initial Release
