TLE4678EL datasheet(7/37 Pages) INFINEON

部品番号	TLE4678EL

部品情報	Low Drop Out Linear Voltage Regulator

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メーカー	INFINEON [Infineon Technologies AG]

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7 / 37 page

Datasheet

7

Rev. 1.2, 2014-10-17

TLE4678

Pin Configuration

3.4

Pin Definitions and Functions PG-SSOP-14

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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