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參數(shù)資料
| 型號(hào)： | U4790B |
| 英文描述： | Wide band low noise operational amplifiers |
| 中文描述： | 燈監(jiān)視器 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 35K |
| 代理商： | U4790B |
U4790B
Rev. A3, 09-Apr-01
1 (5)
Automotive Lamp-Outage Monitor, V
T
= 8 mV, V
Z(3,5)
= 22V
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
4,6
= V
S
– V
T
where V
T
= 8 mV.
If the voltage drop across shunt resistor, R
sh
, 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. An unused comparator input must be
connected to Pin 7.
Features
10 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
Block Diagram
–
+
–
+
–
+
&
&
Z
2
2
7
4
8
6
5
3
1
R
1
150
V
S
V
Batt
R
sh
R
sh
Lamps
95 10606
0.6 V
S
OUT1
OUT2
Z
5
Z
3
Figure 1. Schematic and application circuit
Ordering Information
Extended Type Number
U4790B
Package
DIP8
Remarks
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| U4791B | Automotive Lamp Outage Monitor, VT = 53 mV |
| U482(BAGGEDIN10S) | 320MHz single supply video buffer with low in/out rail |
| U483(BAGGEDIN10S) | 320MHz single supply video buffer with low in/out rail |
| U486(BAGGEDIN10S) | 300MHz single supply video amplifier with low in/out rail |
| U490B | One-Shot Phase Control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U4791B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Automotive Lamp Outage Monitor, VT = 53 mV |
| U4791B-FP | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Automotive Lamp Outage Monitor, VT = 53 mV |
| U4793B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Overload Monitoring with Resistive Load, VT = 44.5 mV |
| U4793B_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Current Monitor IC |
| U4793B-FP | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Overload Monitoring with Resistive Load, VT = 44.5 mV |
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