lm3914-mdc National Semiconductor Corporation, lm3914-mdc Datasheet - Page 11

• Manufacturer Part Number: lm3914-mdc
• Description: Dot/bar Display Driver
• Manufacturer: National Semiconductor Corporation

Typical Applications
*This application illustrates that the LED supply needs practically no filtering
Calibration: With a precision meter between pins 4 and 6 adjust R1 for voltage V
The adjustments are non-interacting.
(Continued)
Expanded Scale Meter, Dot or Bar
Highest No.
LED on
10
Grading 5V Regulators
9
8
7
6
5
4
3
2
1
Application Example:
Red
Red
Yellow
Green
Green
Green
Green
Yellow
Red
Red
Color
11
5V
D
of 1.20V. Apply 4.94V to pin 5, and adjust R4 until LED No. 5 just lights.
V
OUT(MIN)
5.54
5.42
5.30
5.18
5.06
4.94
4.82
4.58
4.46
4.7
00797008
www.national.com