u4791b ETC-unknow, u4791b Datasheet

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u4791b

Manufacturer Part Number
u4791b
Description
Automotive Lamp-outage Monitor, Vt = 53 Mv
Manufacturer
ETC-unknow
Datasheet

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Rev. A2, 07-Jun-99
Automotive Lamp-Outage Monitor, V
Description
The monolithic integrated bipolar circuit, U4791B, is de-
signed as a monitor for lamp failure in automobiles. The
comparator
characteristic of incandescent lamps. The threshold is
tied to a typical value of V
V
Features
D
D
D
D
D
Ordering Information
Block Diagram
T
10 kV–ESD protection
Two comparators with common reference
Tight threshold tolerance
Threshold matched to PTC characteristic
of incandescent lamps
Temperature compensated
= 53 mV.
Extended Type Number
U4791B–FP
U4791B
threshold
R
R
sh
sh
is
matched
4
8
6
4,6
Lamps
Z
2
= V
2
V
Figure 1. Schematic and application circuit
S
S
to
– V
the
0.6 V
T
Package
DIP8
SO8
where
S
PTC
7
The integrated circuit is recommended for the application
of parallel connected lamps. If the voltage drop across
shunt resistor, R
off, otherwise the output is turned on. Without supply
voltage or open input Pin 8 the output is turned off.
An unused comparator must be connected to Pin 7.
D
D
D
D
D
R
1
NPN output
Interference and damage–protection
according to VDE 0839
EMI protection
Reversal polarity protection
Load-dump protection
+
+
+
1
150
W
T
&
&
= 53 mV
sh
, exceeds 53 mV, the output is turned
Z
Z
5
3
Remarks
5
3
V
OUT1
OUT2
Batt
U4791B
95 10613
1 (5)

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u4791b Summary of contents

Page 1

... Automotive Lamp-Outage Monitor, V Description The monolithic integrated bipolar circuit, U4791B, is de- signed as a monitor for lamp failure in automobiles. The comparator threshold is matched characteristic of incandescent lamps. The threshold is tied to a typical value 4 mV. T Features D 10 kV–ESD protection D Two comparators with common reference ...

Page 2

... U4791B Pin Description 1 GND OUT2 4 IN1 5 95 10634 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

... V sat Pin 3 Pin 4 –V 51 Pin 4 Pin 4 Pin 8 Pin 3,5 t d(on) t d(off) t d(off Figure 2. U4791B Typ Max Unit 4 0 53.5 55 1.8 mV/V 0 100 10614 t d(on ...

Page 4

... U4791B Package Information 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 4 13021 0.2 13034 Rev. A2, 07-Jun-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, 07-Jun-99 such unintended or unauthorized use. U4791B 5 (5) ...

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