MP2316 Rev. 1.11

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16

4/11/2017

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Enable Control

EN is a digital control pin that turns the regulator

on and off. Drive EN high to turn on the regulator;

drive it low to turn it off. An internal 1MΩ resistor

from EN to GND allows EN to be floated to shut

down the chip.

The EN pin is clamped internally using a 6.5V

series-Zener-diode. Connecting the EN input pin

pin. The pull up resistance needs to be large

enough to limit the EN pin current less than

100µA. For example, with 12V connected to Vin,

Connecting the EN pin directly to a voltage

source without any pullup resistor requires limit

the amplitude of the voltage less than 6V to

prevent damage to the Zener diode.

UVLO protection

MP2316 has under-voltage lock-out protection

(UVLO). When the input voltage is higher than

the UVLO rising threshold voltage, the MP2316

powers up. It shuts off when the input voltage is

lower than the UVLO falling threshold voltage.

This is non-latch protection.

Thermal Shutdown

The MP2316 employs thermal shutdown by

internally monitoring the junction temperature of

the IC. If the junction temperature exceeds the

threshold value (typically 150ºC), the converter

shuts off. This is non-latch protection. There is

about 20ºC hysteresis. Once the junction

temperature drops below 130ºC, it initiates start

up.