U4791B Selling Leads, Price trend, U4791B DataSheet download, circuit diagram from SeekIC.com

Features: ` 10 kVESD protection` Two comparators with common reference` Tight threshold tolerance` Threshold matched to PTC characteristic of incandescent lamps` Temperature compensated` NPN output` Interference and damageprotection according to VDE 0839` EMI protection` Reversal polarity protecti...

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SeekIC No. : 004534917 Detail

U4791B: Features: ` 10 kVESD protection` Two comparators with common reference` Tight threshold tolerance` Threshold matched to PTC characteristic of incandescent lamps` Temperature compensated` NPN output`...

U4791B Data Sheet

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Part Number:: U4791B
Supply Ability:: 5000

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Upload time: 2024/12/23

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U4790B evaluate
Features: 10 kVESD protectionTwo comparators with common referenceTight threshold toleranceThresho...
U4793B-M evaluate
IC CURRENT MONITOR 44MV 8-DIP
U4793B-MFP evaluate
IC CURRENT MONITOR 44MV 8-SOIC

Product Details

Description

Features:

` 10 kVESD protection
` Two comparators with common reference
` Tight threshold tolerance
` Threshold matched to PTC characteristic of incandescent lamps
` Temperature compensated
` NPN output
` Interference and damageprotection according to VDE 0839
` EMI protection
` Reversal polarity protection
` Load-dump protection

Pinout

Connection Diagram

Specifications

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 T_amb = 95 °C DIP8 SO8 T_amb=60 °C DIP8 SO8	P_tot	420 360	mW
	P_tot	690 560	mW
Ambient temperature range	T_amb	-40to+95
Storage temperature range	T_stg	-55to+125
Junction temperature	T_j	150

Description

The monolithic integrated bipolar circuit, U4791B, is designed as a monitor for lamp failure in automobiles. The comparator threshold is matched to the PTC characteristic of incandescent lamps. The threshold of U4791B is tied to a typical value of V_4,6 = V_S V_T whereas V_T= 53 mV.

The U4791B is recommended for the application of parallel connected lamps. If the voltage drop across shunt resistor, Rsh, exceeds 53 mV, the output is turned off, otherwise the output is turned on. Without supply voltage or open input Pin 8 the output is turned off.

A not used comparator must be connected to Pin 7.

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U4791B

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