TLE4278G View Datasheet(PDF) - Infineon Technologies

Part Name

Description

Manufacturer

TLE4278G

5-V Low Drop Fixed Voltage Regulator

Infineon Technologies 

TLE 4278 G

Watchdog Activating

The calculation of the external resistor which adjusts the watchdog switch off threshold

can be done by Equation (4):

RWADJ = VWADJ,th × (IQ/IWADJ)/IQ,act

(4)

Definitions:

• VWADJ,th = switch off threshold, typical 1.35 V

• IQ/IWADJ = current ratio, typical 720

• IQ,act = switch off load current

TLE 4278 G

Ι

Q

Band-Gap-

Reference

WADJ

R WADJ

Figure 7

HIGH

Watchdog

active

LOW

Watchdog

disabled

GND

AES03072

Data Sheet

13

Rev. 1.4, 2007-02-19

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