VIPER0PHDTR datasheet(6/36 Pages) STMICROELECTRONICS

6 / 36 page

Pin setting

VIPer0P

6/36

DocID028423 Rev 2

SO16N

Name

Function

ZPM exit. When the device is in ZPM, the IC is reactivated by forcing this pin

to SGND for a debounce time, tDEB_ON.

Due to the extremely low level of energy available while in ZPM, the pin can

be noise sensitive. A film-type bypass capacitor from the pin to SGND is

therefore recommended in a noisy environment to prevent improper startup of

the device. An internal pull-up resistor keeps the pin voltage at VON level

during normal operation.

OFF

ZPM enter. To enter ZPM this pin has to be forced to SGND, for a debounce

time tDEB_OFF. An internal pull-up resistor keeps the pin voltage at VOFF level

during normal operation.

9 to 12

N.C.

These pins are not internally connected and must be left floating in order to

get a safe clearance distance.

13 to 16

DRAIN

MOSFET drain. The internal high-voltage current source sinks current from

this pin to charge the VCC capacitor at startup and during steady-state

operation.

These pins are mechanically connected to the internal metal PAD of the

MOSFET in order to facilitate heat dissipation. On the PCB, some copper

area must be placed under these pins in order to decrease the total junction-

to-ambient thermal resistance thus facilitating the power dissipation.

VIPER0PHDTR Datasheet(PDF) 6 Page - STMicroelectronics