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MM5451 Datasheet(PDF) 7 Page - Micrel Semiconductor

Part # MM5451
Description  LED Display Driver
PDF  9 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MM5451 Datasheet(HTML) 7 Page - Micrel Semiconductor

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Micrel, Inc.
MM5450/5451
February 2006
7
M9999-021606
(408) 955-1690
Typical Performance Characteristics
Figure 7.
Figure 8.
LED
A
J
G
E
S
0
2
M
Figure 9.
Typical Applications
LM324
MM5450
LM317
–
+
240
RAW DC
> 9 V
1K
I19 =
2N2907
I19
PIN 19
5V
20
1
5k
7V
1k
CD4046
(VCO)
5V
MM74HC123
10 µS
MM5450
Q19
20
1
Figure 10. Typical Application of Constant Current
Figure 11. Brightness Control Varying the Duty Cycle
Brightness Control



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