LM9036Q

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SNVS685B – NOVEMBER 2010 – REVISED MARCH 2013

APPLICATIONS INFORMATION

Unlike other PNP low dropout regulators, the LM9036Q remains fully operational to 40V. Owing to power

dissipation characteristics of the package, full output current cannot be ensured for all combinations of ambient

temperature and input voltage.

The junction to ambient thermal resistance

resistance rating

While the LM9036Q has an internally set thermal shutdown point of typically 150°C, this is intended as a safety

feature only. Continuous operation near the thermal shutdown temperature should be avoided as it may have a

negative affect on the life of the device.

The LM9036Q maintains regulation to 55V, it will not withstand a short circuit above 40V because of safe

operating area limitations in the internal PNP pass device. Above 55V the LM9036Q will break down with

catastrophic effects on the regulator and possibly the load as well. Do not use this device in a design where the

input operating voltage may exceed 40V, or where transients are likely to exceed 55V.

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