TFA3354 datasheet(6/12 Pages) ETC

6 / 12 page

Pin 8

VCC

Supply voltage

The voltage at the VCC-terminal is limited at typ. 11.4 V by the internal power supply circuit. Therefore it is possible

to apply the power supply directly by mains with dropping resistor and backup capacitor.

The current feed should be choiced high enough for the operation of the voltage limiting.

For save operation of the IC the value of VCC has to be never decreased behind a level of 6.5 V. An additional

requirement is the increasing of VCC over 8 V at least for a moment.

Only under these conditions a proof error storage and a defined reaction of the turn-off transistor is guaranteed.

Absolute Maximum Ratings

Symbol

min

max

unit

current consumption

VCC

ICCeff

peak current for t< 100 µs

VCC

ICCM

100

input voltage error indicator

VErr

-0.3

VCC

input voltage lamp

VLW

-0.3

exchange input

voltage difference between

VLW - VCC

VLW and VCC for

divider factor 16 via LW

input current at pin TM

ITM

1mA

negative current load

ITR(neg.)

-500

for t<1µs with max. repeat

frequency = 200kHz

switching output current

1mA

junction temperature

150

°C

storage temperature

Tstg

-50

150

°C

ambient temperature

Tamb

-20

120

°C

ESD protection

VESD

2kV

09/00

TFA3354

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