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U479B-FP 반도체 회로 부품 판매점

Automotive Lamp Outage Monitor/ VT = 8 mV



TEMIC Semiconductors 로고
TEMIC Semiconductors
U479B-FP 데이터시트, 핀배열, 회로
U479B
Automotive Lamp Outage Monitor, VT = 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 V4,6 = VS – VT whereas VT = 8 mV.
If the voltage drop across shunt resistor, Rsh, 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
D 2 kV–ESD protection
D Two comparators with common reference
D Tight threshold tolerance
D Threshold matched to PTC characteristic
of incandescent lamps
D Temperature compensated
D NPN output
D Interference and damage–protection
according to VDE 0839
D EMI protection
D Reversal polarity protection
D Load-dump protection
Ordering Information
Extended Type Number
U479B
U479B–FP
Package
DIP8
SO8
Remarks
Block Diagram
Rsh
Rsh
VS
2
Z2
4
0.6 VS
8
6
7
+
+
+
&
&
Lamps
1
R1 150 W
Figure 1. Schematic and application circuit
VBatt
5 OUT1
3 OUT2
95 10380
TELEFUNKEN Semiconductors
Rev. A2, 04-Feb-97
1 (5)


U479B-FP 데이터시트, 핀배열, 회로
U479B
Pin Description
GND 1
VS 2
OUT2 3
IN1 4
8
Input
switch
7 VRef
6 IN2
5 OUT1
95 10634
Figure 2. Pinning
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
Absolute Maximum Ratings
Parameters
Supply voltage
Current consumption
t = 2 ms, measured at Pin 1 (GND)
Output current
Input voltage
reference point Pin 7
Power dissipation
Tamb = 95 °C
Tamb = 60 °C
DIP 8
SO 8
DIP 8
SO 8
Ambient temperature range
Storage temperature range
Junction temperature
Thermal Resistance
Junction ambient
Parameters
DIP8
SO8
Pin 2, 7
Pin 1
Pin 3, 5
Pin 4, 6
Symbol
VS
I1
I3,5
–V4,6
Ptot
Ptot
Tamb
Tstg
Tj
Symbol
RthJA
RthJA
Value
16.5
1.5
20
6
420
360
690
560
–40 to +95
–55 to +125
150
Value
110
160
Unit
V
A
mA
V
mW
mW
°C
°C
°C
Unit
K/W
K/W
2 (5) TELEFUNKEN Semiconductors
Rev. A2, 04-Feb-97




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U479B-FP

Automotive Lamp Outage Monitor/ VT = 8 mV - TEMIC Semiconductors