STM86312_06 STMICROELECTRONICS [STMicroelectronics], STM86312_06 Datasheet - Page 7
STM86312_06
Manufacturer Part Number
STM86312_06
Description
1/4 to 1/11-duty VFD controller/driver
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.STM86312_06.pdf
(24 pages)
- Current page: 7 of 24
- Download datasheet (328Kb)
STM86312
Maximum power consumption P
dissipation + dynamic power consumption.
Where segment current = 3 mA, grid current = 15 mA, and LED current = 20 mA,
VFD driver dissipation = number of segments x 6 + number of grids/(number of grids + 1) x
30 (mW)
R
LED driver dissipation = number of LEDs x 20 (mW)
Dynamic power consumption = V
Example
Where V
VFD driver dissipation = 16 x 6 + 6/7 x 30 = 122
R
LED driver dissipation = 4 x 20 = 80
Dynamic power consumption = 5 x 5 = 25
Total 553 mW.
L
L
dissipation = (V
dissipation = 30
EE
= -25 V, V
DD
2
/50 x 17 = 306
DD
- V
= 5 V, and in 16-segment and 6-digit modes,
EE
)
2
/50 x (segment + 1) (mW)
MAX
DD
x 5 (mW)
= VFD driver dissipation + R
L
dissipation + LED driver
Maximum rating
7/24
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