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參數(shù)資料
| 型號： | U643 |
| 廠商： | Atmel Corp. |
| 英文描述： | Flasher, 30-mohm Shunt |
| 中文描述： | 閃光，30毫歐分流 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 57K |
| 代理商： | U643 |
U643B
Rev. A3, 10-Apr-01
1 (5)
Flasher, 30-m Shunt
Description
The bipolar integrated circuit U643B is used in relay-
controlled automotive flashers where a high-level EMC
is required.
Lamp outage is indicated by frequency doubling during
hazard warning as well as direction mode.
Features
Temperature and supply voltage compensated
flashing frequency
Frequency doubling indicates lamp outage
Relay driver output with high current
carrying capacity and low saturation voltage
Minimum lamp load for flasher operation:
≥
1 W
Very low susceptibility to EMI
Protection according to ISO/TR 7637/1 level 4
Block Diagram
V
6
–81 mV
20 k
5 k
20 k
5 k
23 V
Pulse
generator
IC Ground
20 k
1.5...2.2 k
Relay
7
3
8
1
+ V
S
+ 49
R
3
470
R
4
49 a
4
5
K
2
K
1
K
3
C
1
R
1
6
2
95 9756
49 a–Comparator K
3
49 a–Comparator K
2
21 W 21 W 5 W
21 W
Indicator lamps
21 W
5 W
GND
– 31
R
2
Measuring comparator K
1
Shunt
30 m
Figure 1. Application circuit as a car flasher, Resistor R
1
and R
2
: 1/4 Watt
R
4
for protection against continuous reversed polarity: 0.5 Watt
Ordering Information
Extended Type Number
U643B
U643B-FP
Package
DIP8
SO8
Remarks
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PDF描述 |
|---|---|
| U643B | Flasher, 30-mohm Shunt |
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| U6803B | Triple-Driver with Thermal Monitoring |
| U6803B-FP | Triple-Driver with Thermal Monitoring |
| U6803B-MFP | Triple-Driver IC with Thermal Monitoring |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| U6432B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-power Flasher IC with 18-mOMShunt |
| U6432B_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-power Flasher IC with 18-mOHM Shunt |
| U6432B-AFP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| U6432B-FP | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-power Flasher IC with 18-mOMShunt |
| U6432B-MFP | 功能描述:IC FLASHER LOW PWR W/SHUNT 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01 |
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