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(PDF) IRLML2803 Datasheet download

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. As long as that doesn’t cause it to get hotter than its maximum junction temperature, no harm will be irlkl2803. Mahendra Gunawardena 1, 9 Home Questions Tags Users Unanswered.

If the pulse is short enough, the FET will not heat up much and therefore survive just fine. The poly most modern processes use poly gates has some resistance; different Fabs have their own secret sauces. It’s not current that kills a FET, it’s overheating.

This current is limited by its internal output resistance since there doesn’t seem to be a limiting circuit according to the datasheet’s diagram ilrml2803 the output stage. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


The Apps Engineer likely will not have access to any Fab details. On page 4, bottom irll2803, there’s a graph showing the maximum safe operating area SOA of the device.

It won’t be able to deliver 1A or more continuously, however – it can only do that for short pulses.

IRLML (IRF) PDF技术资料下载 IRLML 供应信息 IC Datasheet 数据表 (2/9 页)

In fact, the datasheet for the MIC states: The current datasueet be internally limited. Unimportant 1 6. Without a gate resistor the only thing limiting the current is the gate driver’s output resistance, which is supposedly low, it would not be a good driver otherwise. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and irlml283 policyand that your continued use of the website is subject to these policies.

At t 0 any capacitor will act like a short circuit. Post as a guest Name.

MOSFET driver without gate resistor – Electrical Engineering Stack Exchange

Owing to the fact that this gate driver features adaptive dead-time and thus monitors the irl,l2803 of the MOSFET to determine when it has fully turned off, a gate resistor prevents proper sensing of the actual gate.


The FET can’t get rid of that heat but will absorb it in its thermal mass instead, heating up a little. Email Required, but never shown.

That’s W dissipated in a SOT device. I would place a 0 ohm resistor there for future experimentation.

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MOSFETs like the ones in the MIC’s output stage can handle large current pulses for a short time by simply absorbing the heat generated by the pulse in their thermal mass.

It will survive a pulse of 7A at 20V just fine as long as it’s only 10 microseconds long. Sign up or log in Sign up using Google. So if you just short its output to ground, it will die. The chip specifies the “typical” LO output current as 1A, not an absolute maximum.

Sign up using Facebook. My thinking is this should lead to current peaks that easily exceed the irlml803 1A maximum peak current and damage the chip, but the evaluation board demonstrates that this is not the case, what am I missing?