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參數資料
| 型號： | U4791B |
| 英文描述： | Automotive Lamp Outage Monitor, VT = 53 mV |
| 中文描述： | 汽車燈中斷監視器，室速\u003d 53壓 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 80K |
| 代理商： | U4791B |
U4791B
TELEFUNKEN Semiconductors
Rev. A2, 17-Dec-96
1 (5)
Automotive Lamp Outage Monitor, V
T
= 53 mV
Description
The monolithic integrated bipolar circuit, U4791B, is de-
signed 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
whereas
V
T
= 53 mV.
The integrated circuit is recommended for the application
of parallel connected lamps. If the voltage drop across
shunt resistor, R
sh
, exceeds 53 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 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
Ordering Information
Extended Type Number
U4791B
U4791B–FP
Block Diagram
Package
DIP8
SO8
Remarks
–
+
–
+
–
+
&
&
Z
2
2
7
4
8
6
5
3
1
R
1
150
V
S
V
Batt
R
sh
R
sh
Lamps
95 10613
0.6 V
S
OUT1
OUT2
Z
5
Z
3
Figure 1. Schematic and application circuit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| U4793B-M | 功能描述:IC CURRENT MONITOR 44MV 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩流/電流管理 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 功能:電流開關 檢測方法:- 精確度:±10% 輸入電壓:1.7 V ~ 5.5 V 電流 - 輸出:600mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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