STM86312 STMicroelectronics, STM86312 Datasheet - Page 7

• Manufacturer Part Number: STM86312
• Description: IC DRIVER/CONTROLLER VFD 44PQFP
• Manufacturer: STMicroelectronics

Specifications of STM86312

• Display Type: Vacuum Fluorescent (VF)
• Configuration: 16 Segments
• Interface: Serial
• Digits Or Characters: 4 Digits
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-MQFP, 44-PQFP
• Driver Type: VFD Drivers
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Output Current: 25 mA
• Minimum Operating Temperature: - 40 C
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: No
• Other names: 497-4363

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