U479B-FP Datasheet

IC型號：
U479B-FP
PDF描述：
Automotive Lamp Outage Monitor, VT = 8 mV
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U479B

Automotive Lamp Outage Monitor, V

= 8 mV

Description

The monolithic integrated bipolar circuit, U479B, is

designed as a monitor for lamp failure in automobiles.

The comparator threshold is matched to the PTC

characteristic of incandescent lamps. The threshold is

tied to V

4,6

= V

鈥?V

whereas V

= 8 mV.

If the voltage drop across shunt resistor, R

, exceeds

8 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 input must be

connected to Pin 7.

Features

2 kV鈥揈SD protection

Two comparators with common reference

Tight threshold tolerance

Threshold matched to PTC characteristic

of incandescent lamps

NPN output

Interference and damage鈥損rotection

according to VDE 0839

Temperature compensated

EMI protection

Reversal polarity protection

Load-dump protection

Ordering Information

Extended Type Number

U479B

U479B鈥揊P

Package

DIP8

SO8

Remarks

Block Diagram

鈥?/div>

0.6 V

鈥?/div>

Lamps

150

95 10380

Batt

OUT1

OUT2

Figure 1. Schematic and application circuit

TELEFUNKEN Semiconductors

Rev. A2, 04-Feb-97

1 (5)

型號

版本

描述

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