U6043B_05 Datasheet, PDF (2/8 Pages) ATMEL Corporation – Flasher IC with 18-mOHM Shunt

2. Block Diagram
Figure 2-1. Car Flasher Application Circuit
C₁
4
6
2
Measuring comparator
V ₆ - 49 mV
20 kΩ
5 kΩ
K₁
7
R₃
Shunt
18 mΩ
+ V_S
+ 49
K₂
Pulse
R₁
generator
49 a-Comparator K ₂
20 kΩ
49 a-Comparator K ₃
K₃
5
20 kΩ
3
Relay
8
R₂
23 V
5 kΩ
IC Ground
1
1.5...2.2 kΩ
R₄
470 Ω
49 a
5W
GND
- 31
21 W
21 W
21 W
Indicator lamps
21 W 5 W
2 U6043B
4726B–AUTO–11/05