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U2043B

更新时间： 2024-11-11 03:25:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		光电二极管
页数	文件大小	规格书
10页	201K
描述
Flasher, 30 mOHM Shunt, Pilot Lamp to GND or VBatt

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U2043B 数据手册

Features

•

Temperature and Voltage Compensated Frequency

Warning Indication of Lamp Failure by Means of Frequency Doubling

Minimum Lamp Load for Flasher Operation ≥ 10W

Relay Output with High Current Carrying Capacity and Low Saturation

Voltage

•

Low Susceptibility to EMI

Flasher, 30 mΩ

Shunt, Pilot

Lamp to GND or

V_Batt

1. Description

The integrated circuit U2043B is used in relay-controlled automotive flashers where a

high EMC level is required. A lamp outage is indicated by frequency doubling during

hazard mode as well as direction mode. The pilot lamp can be connected either to

U2043B

_Battor GND.

Figure 1-1. Block Diagram

+ V _S

+ 49

R₃

C₁

30 m Ω

Shunt

Measuring comparator

V ₆-81 mV

K₁

Pilot lamp

5 W

Pulse

generator

R₁

Relay

R₂

3.8 k Ω

49 a

K₃

3.3 k Ω

V₆-5 V

23 V

49 a-Comparator

R₁

IC Ground

5 W 21 W 21 W

21 W 21 W 5 W

100 Ω

Indicator lamps

Pilot lamps

GND

- 31

Rev. 4720B–AUTO–09/05

12 3 4 5 6 7...10

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