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TLE4678GM Datasheet(PDF) 7 Page - Infineon Technologies AG |
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TLE4678GM Datasheet(HTML) 7 Page - Infineon Technologies AG |
7 / 37 page Datasheet 7 Rev. 1.2, 2014-10-17 TLE4678 Pin Configuration 3.4 Pin Definitions and Functions PG-SSOP-14 Pin Symbol Function 1WO Watchdog Output Open collector output with an internal pull-up resistor to the output Q. An additional external pull-up resistor to the output Q is optional. Leave open if the watchdog function is not needed. 3WADJ Watchdog Activating Threshold Adjust An external resistor to GND determines the watchdog activating threshold. Connect directly to GND for disabling the watchdog. Connect directly to GND if the watchdog function is not needed. Connect to output Q via 270 kΩ resistor for permanently activating the watchdog. 4GND IC Ground Interconnect with the exposed pad and heatsink area on PCB. 5D Reset Delay and Watchdog Timing Connect a ceramic capacitor D (pin 5) to GND for reset delay and watchdog timing adjustment. Leave only open if both, the reset and the watchdog function are not needed. 7RADJ Reset Switching Threshold Adjust For reset threshold adjustment connect to a voltage divider from output Q to GND. For triggering the reset at the internally determined threshold, connect this pin directly to GND. Connect directly to GND if the reset function is not needed. 8WI Watchdog Input Positive edge triggered input, usable for microcontroller monitoring. Connect to GND if the watchdog function is not needed. 10 Q 5 V Regulator Output Block to GND with a capacitor close to the IC pins, respecting capacitance and ESR requirements given in the Chapter 4.2 Functional Range. 12 I Regulator Input and IC Supply For compensating line influences, a capacitor to GND close to the IC pins is recommended. 14 RO Reset Output Open collector output with an internal pull-up resistor to the output Q. An additional external pull-up resistor to the output Q is optional. Leave open if the reset function is not needed. 2, 6, 9, 11, 13 n. c. Internally not connected Connection to GND on PCB recommended. Exposed pad Connect to heat sink area on PCB. Interconnect with GND. |
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