LM3916N-1 National Semiconductor, LM3916N-1 Datasheet - Page 15

• Manufacturer Part Number: LM3916N-1
• Description: LED BAR GRAPH DRIVER, 3916, DIP18
• Manufacturer: National Semiconductor

Specifications of LM3916N-1

• Led Driver Application: VU Meter, Power Meters
• No. Of Outputs: 10
• Output Current: 30mA
• Output Voltage: 17V
• Input Voltage: 3V To 25V
• Dimming Control Type: Analogue
• Operating: RoHS Compliant
• Topology: Linear

Application Hints
5 mA ≤ I
V
1.25V ≤ V
1.5 mA ≤ I
Optional circuit for improved intensity matching at low currents. See text.
Other Applications
For increased resolution, it’s possible to obtain a display with
a smooth transition between LEDs. This is accomplished by
superimposing an AC waveform on top of the input level as
REF
= 5V
LED
REF
LED
≤ 28 mA
≤ 10V
FIGURE 12. Independent Adjustment of Reference Voltage and LED Intensity for Multiple Drivers
≤ 25 mA
FIGURE 13. Wide-Range Adjustment of Reference Voltage and LED intensity for Multiple Drivers
(Continued)
15
shown in Figure 14. The signal can be a triangle, sawtooth or
sine wave from 60 Hz to 1 kHz. The display can be run in
either dot or bar mode.
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