U479B-MFPY74 Atmel, U479B-MFPY74 Datasheet

RF Wireless Misc Lamp Outage Monitor 8 mV Threshold

U479B-MFPY74

Manufacturer Part Number
U479B-MFPY74
Description
RF Wireless Misc Lamp Outage Monitor 8 mV Threshold
Manufacturer
Atmel
Type
Phase Control ICsr
Datasheet

Specifications of U479B-MFPY74

Supply Voltage (max)
9.2 V
Supply Voltage (min)
8.6 V
Operating Temperature Range
- 10 C to + 100 C
Package / Case
SOIC
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
1. Description
The monolithic integrated bipolar circuit, U479B, is designed as a monitor for lamp fail-
ure in automobiles. The comparator threshold is matched to the PTC characteristic of
incandescent lamps. The threshold is tied to V
If the voltage drop across the shunt resistor, R
off, otherwise, the output is turned on. Without supply voltage or open input pin 8, the
output is turned off. A comparator input, which is not used, must be connected to
pin 7.
Figure 1-1.
2-kV ESD Protection
Two Comparators with Common Reference
Tight Threshold Tolerance
Threshold Matched to PTC Characteristic of Incandescent Lamps
Temperature Compensated
NPN Output
Interference and Damage-protection According to VDE 0839
EMI Protection
Reversal Polarity Protection
Load-dump Protection
R
R
sh
sh
Schematic and Application Circuit
Lamps
4
8
6
Z
2
2
V
S
0.6 V
S
7
R
1
4,6
sh
+
+
+
-
-
-
1
150
, exceeds 8 mV, the output is turned
= V
S
– V
&
&
T
where V
T
3
5
= 8 mV.
OUT1
OUT2
V
Batt
Automotive
Lamp-outage
Monitor IC
U479B
Rev. 4775B–AUTO–09/05

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U479B-MFPY74 Summary of contents

Page 1

... Reversal Polarity Protection • Load-dump Protection 1. Description The monolithic integrated bipolar circuit, U479B, is designed as a monitor for lamp fail- ure in automobiles. The comparator threshold is matched to the PTC characteristic of incandescent lamps. The threshold is tied the voltage drop across the shunt resistor, R off, otherwise, the output is turned on. Without supply voltage or open input pin 8, the output is turned off ...

Page 2

... Pin Description Pin Symbol Function 1 GND Reference point, ground 2 VS Supply voltage 3 OUT2 Output 2 4 IN1 Input 1 5 OUT1 Output 1 6 IN2 Input 2 7 VREF Reference voltage 8 INPUT Input switch U479B GND OUT2 1N1 INPUT VREF IN2 OUT1 4775B–AUTO–09/05 ...

Page 3

... Junction ambient SO8 4775B–AUTO–09/05 Pin Symbol 3 4,6 P tot P tot P tot P tot T amb T stg T j Symbol R thJA R thJA U479B Value Unit 16.5 1 420 mW 360 mW mW 690 560 mW –40 to +95 –55 to +125 150 Value Unit 110 K/W 160 K °C °C °C 3 ...

Page 4

... I 3,5 Control signal threshold Voltage drift V Threshold voltage Switch identification Input 1/input 2 Input currents Input switch Switch-on, high to low Delay time Switch-off, low to high Figure 5-1. U479B 4 Figure 1-1 on page 1, unless otherwise specified. Pin 12V 25°C Pin 12V = 15V ...

Page 5

... Ordering Information Extended Type Number U479B-MY U479B-MFPY U479B-MFPG3Y 7. Package Information 4775B–AUTO–09/05 Package Remarks DIP8 Pb-free SO8 Tubed, Pb-free SO8 Taped and reeled, Pb-free ific a tio U479B ...

Page 6

... Package SO8 Dimensions Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4775B-AUTO-09/05 U479B 6 5.00 4.85 1.4 0.25 0.4 0.10 1.27 3. technical drawings according to DIN specifications 1 4 History ...

Page 7

... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...

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