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부품번호 | U6043B 기능 |
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기능 | FLASHER IC | ||
제조업체 | ATMEL Corporation | ||
로고 | |||
전체 10 페이지수
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
1. Description
The bipolar integrated circuit U6043B 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.
Flasher IC with
18-mΩ Shunt
U6043B
4726C–AUTO–02/10
4. Functional Description
4.1 Pin 1, GND
The U6043B is protected against damage in case of battery reversal via resistor R4 to ground
(–31). An integrated protection circuit together with external resistances R2 and R4 limits the cur-
rent pulses in the IC.
4.2 Pin 2, Supply Voltage, VS power
The arrangement of the supply connections to pin 2 (and 6) must be so as to ensure that on the
connection printed circuit board (PCB), the resistance of VS to pin 6 is lower than that to pin 2.
4.3 Pin 3, Relay Control Output (Driver)
The relay control output is a high-side driver with a low saturation voltage. It is capable of driving
a typical automotive relay with a minimum coil resistance of 60 Ω.
4.4 Pin 4 and 5, Oscillator
The flashing frequency, f1, is determined by the R1C1 components as given by the following for-
mula below (see Figure 2-1):
f1 ≈
-----------------1-------------------
R1 × C1 × 1.5
Hz
where C1 ≤ 47 µF, R1 = 6.8 kΩ to 510 kΩ
In case of a lamp outage (see pin 7) the oscillator frequency is switched to the lamp outage fre-
quency f2 with f2 ≈ 2.2 × f1.
Duty cycle in normal flashing mode: 50%
Duty cycle in lamp outage mode: 40% (bright phase)
4.5 Pin 6, Supply Voltage, Sense
For accurate monitoring via the shunt resistor, a minimized layer resistance from point VS/shunt
to pin 6 is recommended.
4.6 Pin 7, Lamp Outage Detection
The lamp current is monitored via an external shunt resistor Rsh and an internal comparator K1
with its reference voltage of typically 49 mV (VS = 12V). The outage of one lamp is detected
according to the following calculation:
Nominal current of 1 lamp: 21W/(VS = 12V): Ilamp = 1.75A
Nominal current of 2 lamps: 2 × 21W/(VS = 12V): Ilamp = 3.5A
We recommend setting the detection threshold in the middle of the current range:
Ioutage ≈ 2.7A
Thus, the shunt resistor is calculated as:
Rsh = VT (K1)/Ioutage
Rsh = 49 mV/2.7 A = 18 mΩ
4 U6043B
4726C–AUTO–02/10
4페이지 U6043B
8. Ordering Information
Extended Type Number
U6043B-MY
U6043B-MFPY
U6043B-MFPG3Y
9. Package Information
Package
DIP8
SO8
SO8
Package: DIP8
Dimensions in mm
9.8 max.
9.6±0.1
1.2±0.3
Remarks
Pb-free
Tubed, Pb-free
Taped and reeled, Pb-free
0.3 B
A
7.62±0.15
2.54 nom.
B
0.53±0.05
0.4 A
3 x 2.54 = 7.62 nom.
6.3±0.1
0.36 max.
8.75±0.8
1.54
0.65
85
14
Drawing-No.: 6.543-5040.01-4
Issue: 1; 16.01.02
technical drawings
according to DIN
specifications
4726C–AUTO–02/10
7
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ U6043B.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
U6043B | FLASHER IC | ATMEL Corporation |
U6043B-FP | FLASHER IC | ATMEL Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |