- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382701 > U2043B Flasher, 30-mohm Shunt, Pilot Lamp to GND or V Batt PDF資料下載
參數(shù)資料
| 型號： | U2043B |
| 英文描述： | Flasher, 30-mohm Shunt, Pilot Lamp to GND or V Batt |
| 中文描述： | 閃光，30毫歐分流，試驗燈到GND或V巴特 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 132K |
| 代理商： | U2043B |
U2043B
TELEFUNKEN Semiconductors
Rev. A2, 25-Feb-97
2 (6)
Pin Description
Pin
1
2
3
4
5
6
7
8
Symbol
GND
V
S
REL
OSC
OSC
V
S
LD
SI
Function
IC ground
Supply voltage V
S
Relay driver
C
1
oscillator
R
1
oscillator
Supply voltage V
S
Lamp failure detection
Start input (49a)
1
2
3
4
8
7
6
5
GND
Vs
REL
OSC
OSC
Vs
LD
12749
SI
U2043B
Figure 2. Pinning
Functional Description
Pin 1
, GND
The integrated circuit is protected against damage via
resistor R
4
to ground (–31) in the case of battery reversal.
An integrated protection circuit together with external
resistances R
2
and R
4
limits the current pulses in the IC.
Pin 2
, Supply voltage, V
S
- Power
The arrangement of the supply connections to Pin 2 must
be such as ensure that, on the connection printed circuit
board (PCB), the resistance of V
S
to Pin 6 is lower than
that to Pin 2.
Pin 3
, Relay control output (driver)
The relay control output is a high-side driver with a low
saturation voltage and capable to drive a typical automo-
tive relay with a minimum coil resistance of 60 .
Pin 4 and 5
Oscillator
Flashing frequency, f
1
, is determined by the R
1
C
1
compo-
nents as follows (see figure 1):
f
1
1
R
1
C
1
1.5Hz
where
C
1
R
1
47 F
6.8 k to 510 k
In the case of a lamp outage (see Pin 7) the oscillator
frequency is switched to the lamp outage frequency f
2
with f
2
2.2
f
1
.
Duty cycle in normal flashing mode: 50%
Duty cycle in lamp outage mode: 40% (bright phase)
Pin 6
, Supply voltage, Sense
For accurate monitoring via the shunt resistor, a mini-
mized layer resistance from point V
S
/ shunt to Pin 6 is
recommended.
Pin 7
, Lamp outage detection
The lamp current is monitored via an external shunt
resistor R
3
and an internal comparator K1 with its
reference voltage of typ. 81 mV (V
S
=
12 V). The outage
of one lamp out of two lamps is detected according to the
following calculation:
Nominal current of 1 lamp: 21 W / (V
S
= 12 V):
I
lamp
= 1.75 A
Nominal current of 2 lamps: 2 x 21 W / (V
S
= 12 V):
I
lamp
= 3.5 A.
The detection threshold is recommended to be set in the
middle of the current range: I
outage
Thus the shunt resistor is calculated as:
R
3
= V
T
(K1) / I
outage
R
3
=
81 mV/2.7 A = 30 m .
Comparator K1‘s reference voltage is matched to the
characteristics of filament lamps (see “control signal
threshold” in the data part).
The combination of shunt resistor and resistance of wire
harness prevents Pin 7 from a too high voltage in the case
of shortet lamps.
2.7 A
Pin 8
, Start input
Start condition for flashing: the voltage at Pin 8 has to be
below less than V
S
– 5 V (flasher switch closed).
Humidity and dirt may decrease the resistance between
49 a and GND. If this leakage resistance is
is still kept in its off-condition. In this case the voltage at
Pin 8 is greater than V
S
– 5 V.
During the bright phase the voltage at Pin 8 is above the
K2
threshold, during the dark phase it is below the K3
threshold. For proper start conditions a minimum lamp
wattage of 10 W is required.
5 k the IC
相關PDF資料 |
PDF描述 |
|---|---|
| U208 | Open Loop Phase Control Circuit |
| U2100B | Timer Control for Triac and Relay |
| U2101B | Relay Timer |
| U2102B | Multifunction Timer |
| U210B | Phase Control Circuit - Load Current Feedback Applications |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| U2043B-FP | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Flasher, 30-mohm Shunt, Pilot Lamp to GND or V Batt |
| U2043B-M | 功能描述:IC FLASH CONTROL 10W SGL 8-DIP 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 |
| U2043B-MFP | 功能描述:IC FLASH CONTROL 10W SGL 8-SOIC 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 |
| U2043B-MFPG3 | 功能描述:IC FLASH CONTROL 10W SGL 8-SOIC RoHS:是 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 |
| U2043B-MFPG3Y | 功能描述:LED照明驅(qū)動器 Flasher IC RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
發(fā)布緊急采購，3分鐘左右您將得到回復。