ISL78302A

10

Intersil Automotive Qualified products are manufactured, assembled and tested utilizing TS16949 quality systems as noted

in the quality certifications found at www.intersil.com/en/support/qualandreliability.html

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time

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

accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third

parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see www.intersil.com

FN7932.1

December 23, 2013

For additional products, see www.intersil.com/en/products.html

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.

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed-signal and power management

semiconductors. The company's products address some of the largest markets within the industrial and infrastructure, personal

computing and high-end consumer markets. For more information about Intersil, visit our website at www.intersil.com.

For the most updated datasheet, application notes, related documentation and related parts, please see the respective product

information page found at www.intersil.com. You may report errors or suggestions for improving this datasheet by visiting

www.intersil.com/en/support/ask-an-expert.html. Reliability reports are also available from our website at

http://www.intersil.com/en/support/qualandreliability.html#reliability

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 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