ML9209 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

ML9209

Vacuum fluorescent display tube controller driver

Oki Electric Industry 

OKI Semiconductor

FEDL9209-01

ML9209-xx

APPLICATION CIRCUIT

Alphanumeric fluorescent display tubes

Heater transformer

ANODE ANODE GRID

(SEGMENT) (SEGMENT) (DIGIT)

VDD

2

16

16

VDD

VDD AD1-2 SEG1-16 COM1-16

VDD

C2

Micro-

RESET

ML9209-01

controller

CS

Output port CP

C4

GND

DA

GND VFL

OSC0

VDD

R1

VFL

C3

GND

R2

ZD

C1

GND

Notes:

1. The VDD voltage depends on the power supply voltage of the microcontroller used. Adjust the value of the

constants R1 and C1 to the power supply voltage used.

2. The VFLvoltage depends on the vacuum fluorescent display tube used. Adjust the value of the constants R2

and ZD to the voltage used.

Reference data

Shown below is a chart showing the VFL voltage vs. output current of each driver.

Care must be taken that the entire power consumption will not exceed the power dissipation.

–30

COM1–COM16

(Condition: VOH = VDD – 1.5 V)

–25

–20

–15

AD1–AD2

–10

(Condition: VOH = VDD – 1.5 V)

–5

0

–17 –22 –27 –32 –37 –42 (V)

SEG1–SEG16

(Condition: VOH = VDD – 1.5 V)

VFL Voltage (VDD – n)

VFL Voltage vs. Output Current of Each Driver

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