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TPS922053: Any way to shut-down the device completely?

Part Number: TPS922053


Testing the TPS922053EVM board I'm realized that I'm not able to set the load current to zero.

Even if I set EN/PWM=GND and ADIM/HD=GND I observe a small current on the load (12V-400mA LED string)

Is it possible to set this current to zero? How?

gaston