u4790b ATMEL Corporation, u4790b Datasheet

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u4790b

Manufacturer Part Number
u4790b
Description
Automotive Lamp-outage Monitor, Vz 3,5
Manufacturer
ATMEL Corporation
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
U4790B
Manufacturer:
PHILIPS
Quantity:
309
Rev. A2, 22-Apr-99
Automotive Lamp-Outage Monitor, V
Description
The bipolar IC U4790B 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 a typical value of V
where V
Features
D
D
D
D
D
Ordering Information
Block Diagram
10 kV–ESD protection
Two comparators with common reference
Tight threshold tolerance
Threshold matched to PTC characteristic
of incandescent lamps
Temperature compensated
Extended Type Number
T
= 8 mV.
U4790B
R
R
sh
sh
Lamps
4
8
6
Z
2
2
V
S
Figure 1. Schematic and application circuit
4,6
= V
0.6 V
Package
DIP8
S
S
– V
T
7
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. An unused comparator input 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
= 8 mV, V
&
&
Z
Z
95 10606
Remarks
5
3
5
3
Z(3,5)
U4790B
V
OUT1
OUT2
Batt
= 22 V
sh
, exceeds
1 (5)

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u4790b Summary of contents

Page 1

... Automotive Lamp-Outage Monitor, V Description The bipolar IC U4790B 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 a typical value of V where mV. T Features D 10 kV–ESD protection D Two comparators with common reference ...

Page 2

... U4790B 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 Ambient temperature range ...

Page 3

... Pin 3,5 V sat Pin 3 Pin 4 – Pin 4 Pin 4 Pin 8 Pin 3,5 t d(on) t d(off) t d(off Figure 3. U4790B Typ Max Unit 4 0 9.5 mV 9.3 10.8 0.45 mV/V 0 100 10624 t d(on ...

Page 4

... U4790B Package Information Package DIP8 Dimensions in mm 0.58 0. (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 13021 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. U4790B 5 (5) ...

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