U643B-MFPY Atmel, U643B-MFPY Datasheet - Page 2

• Manufacturer Part Number: U643B-MFPY
• Description: Motor / Motion / Ignition Controllers & Drivers Flash Control
• Manufacturer: Atmel
• Type: Flasher ICr

Specifications of U643B-MFPY

• Mounting Style: SMD/SMT
• Package / Case: SOIC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2. Block Diagram
Figure 2-1.
2
U643B
R
C
1
1
Car Flasher Application Circuit, Resistor R
Polarity: 0.5W
4
5
generator
Pulse
Measuring comparator K
49 a-Comparator K
49 a-Comparator K
K
K
K
2
1
3
V
6
-81 mV
20 k
2
3
20 k
20 k
1
6
5 k
5 k
IC Ground
1
23 V
and R
2
1
2
7
3
8
: 0.25W; R
1.5...2.2 k
470
Relay
R
R
2
4
4
for Protection Against Continuous Reversed
GND
- 31
5 W
21 W
21 W
Shunt
Indicator lamps
R
3
30 m
49 a
21 W 21 W 5 W
4727B–AUTO–09/05
+ V
+ 49
S