The EN pin of ADM7172

Question

Hi all, I am using this ADM7172 to gain a 5V output. I want to control its' EN pin with a STM32 GPIO in OD(open drain) mode with a resistor pulling up to 5V, so it's like 0V/5V logic 
 But, here in the datasheet 
 
 I don't understand what is EN INPUT STANDBY and EN INPUT PRECISION 
 I wonder if the ADM7172 is enabled/disabled with a rising/falling edge or with a certain level like 1.2V is high and 1.1V is low ?? 
 By the way, it seems the OD output of STM32 only has few mA of drive ability, can it be used to control this EN pin? 
 Thanks

bgonzales · Accepted Answer

Hi, 
 You need only refer to the EN Input Precision for LDO enabling. You are correct that need to hit the 1.2V threshold to enable and operate the LDO in regulation. 1.1V is the disable threshold.

in terms of drivability, a logic input is enough to enable the LDO. The enable has leakage current of as low as 0.1uA (typical). 
 Regards, 
 Bryan)

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The EN pin of ADM7172