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U4791BM, U4793, U4793B

Table of contents:
Info of U4791BM
Info of U4793
Info of U4793B

U4791BM, U4793, U4793B Selling Leads, Datasheet

MFG:tfk Package Cooled:tfk D/C:dc01

U4791BM, U4793, U4793B Datasheet download

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Part Number: U4791BM

MFG: tfk

Package Cooled: tfk

D/C: dc01

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U4793B General Description

The IC U4793B in bipolar circuit, is designed to monitor overload or a short circuit in automotive or industrial applications. The threshold is tied to V_4,6 = V_S V_Twhereas V_T = 44.5 mV. It is independent of the supply voltage, VS. If the voltage drop across shunt resistor, Rsh,exceeds this value, the output is turned on, otherwise the output is turned off.

Without supply voltage or open input Pin 8, the output is turned off. The output breakdown voltage is determined by the Z-diodes Z₃and Z₅ with a typical value of V_Z = 22 V.

A not used comparator input must be connected to Pin 7.

U4793B Maximum Ratings

Parameters	Symbol	Value	Unit
Supply voltage Pin2,7	V_S	16.5	V
Current consumption t = 2 ms,measured at Pin 1 (GND) Pin1	I₁	1.5	A
Output current Pin 3, 5	I_3,5	20	mA
Input voltage Pin 4, 6 reference point Pin 7	-V_4,6	6	V
Power dissipation Tamb = 95 °C DIP8 SO8 Tamb=60 °C DIP8 SO8	P_tot	420 360	mW
Power dissipation Tamb = 95 °C DIP8 SO8 Tamb=60 °C DIP8 SO8	P_tot	690 560	mW
Ambient temperature range	T_amb	-40to+95
Storage temperature range	T_stg	-55to+125
Junction temperature	T_j	150

U4793B Features

` 10 kV ESD protection
` Two comparators with common reference
` Tight threshold tolerance
` Constant threshold
` NPN output
` Interference and damageprotection according to VDE 0839
` EMI protection
` Reversal polarity protection
` Load-dump protection

U4793B Connection Diagram

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