u479b ETC-unknow, u479b Datasheet

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u479b

Manufacturer Part Number
u479b
Description
Automotive Lamp-outage Monitor, Vt = 8 Mv
Manufacturer
ETC-unknow
Datasheet

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U479B
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TEMIC
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U479B
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Rev. A2, 22-Apr-99
Automotive Lamp-Outage Monitor, V
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
Features
D
D
D
D
D
Ordering Information
Block Diagram
2 kV–ESD protection
Two comparators with common reference
Tight threshold tolerance
Threshold matched to PTC characteristic
of incandescent lamps
Temperature compensated
Extended Type Number
4,6
= V
U479B–FP
U479B
S
– V
T
R
R
whereas V
sh
sh
Lamps
4
8
6
T
= 8 mV.
Z
2
2
Figure 1. Schematic and application circuit
V
S
0.6 V
Package
DIP8
SO8
S
7
R
If the voltage drop across shunt resistor, R
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.
D
D
D
D
D
1
NPN output
Interference and damage–protection
according to VDE 0839
EMI protection
Reversal polarity protection
Load-dump protection
+
+
+
150
1
W
T
&
&
= 8 mV
3
5
Remarks
V
OUT1
OUT2
Batt
95 10380
U479B
sh
, exceeds
1 (5)

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u479b Summary of contents

Page 1

... Automotive Lamp-Outage Monitor, V 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 – V whereas mV. 4 Features D 2 kV–ESD protection D Two comparators with common reference ...

Page 2

... U479B Pin Description 1 GND OUT2 4 IN1 5 95 10634 Figure 2. Pinning Absolute Maximum Ratings Parameters Supply voltage Current consumption ms, measured at Pin 1 (GND) Output current Input voltage reference point Pin 7 Power dissipation DIP 8 amb DIP 8 amb SO 8 Ambient temperature range ...

Page 3

... Pin Pin 3,5 V sat Pin 7 Pin 4,6 –V 6.5 T –V 7 Pin 8 Pin 4 Pin 8 Pin 3,5 t d(on) t d(off) t d(off Figure 3. Delay times U479B Typ Max Unit 4 0 9.5 mV 9.3 10.8 mV 0.45 mV/V 0 100 10624 t ...

Page 4

... U479B Dimensions in mm Package DIP8 Dimensions in mm 0.58 0. Package SO8 Dimensions in mm 0.4 1. (5) 9.8 7.77 9.5 7.47 1.64 1.44 4.8 max 6.4 max 3.3 0.5 min 0.36 max 9.8 2.54 8.2 7.62 5 technical drawings according to DIN specifications 4 5.2 4.8 5.00 4.85 3.7 1.4 0.25 3.8 0.10 6.15 3.81 5.85 5 technical drawings according to DIN specifications 5 13021 0.2 13034 Rev. A2, 22-Apr-99 ...

Page 5

... TEMIC Semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2594, Fax number 7131 67 2423 Rev. A2, 22-Apr-99 such unintended or unauthorized use. U479B 5 (5) ...

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