BU97981KV-E2 Datasheet, PDF (5/50 Pages) Rohm – Multi-function LCD Segment Drivers

BU97981xxx Series MAX 196 segments (SEG49xCOM4)
Datasheet
Absolute Maximum Ratings (VSS=0V)
Parameter
Symbol
Ratings
Unit
Remarks
Power Supply Voltage 1
VDD
-0.3 to +4.5
V Power supply
Power Supply Voltage 2
Power Dissipation
VLCD
Pd
-0.5 to +7.0
1.0 ^(Note1)
3.6 ^(Note2)
0.8 ^(Note3)
V Power supply for LCD
BU97981KV
W BU97981MUV
BU97981GU
Input Voltage Range
VIN
-0.5 to VDD+0.5
V
Operational Temperature Range
Topr
-30 to +75
°C
Storage Temperature Range
Tstg
-55 to +125
°C
Iout1
5
mA SEG output
Output Current
Iout2
Iout3
5
mA COM output
10
mA GPO output
Iout4
50
mA LED output
(Note1) When use more than Ta=25^°C, subtract 10mW per degree. (using ROHM standard board)
(board size：70mm×70mm×1.6mm material: FR4 board copper foil: land pattern only).
(Note2) When use more than Ta=25^°C, subtract 36mW per degree. (using ROHM standard board)
(board size：74.2mm×74.2mm×1.6mm SEMI standard 4 layer board)
(Note3) When operated higher than Ta=25^°C, subtract 8.0mW per degree. (using ROHM standard board)
(board size：114.3mm×76.2mm×1.6mm)
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions (Ta=-30°C to +75°C,VSS=0V)
Parameter
Symbol
Ratings
Unit
Min
Typ
Max
Remarks
Power Supply Voltage 1 VDD
1.8
-
3.6
V Power supply
Power Supply Voltage 2 VLCD
3.3
-
5.5
V Power supply for LCD
LED Supply Voltage
VLED
1.0
-
VLCD V Power supply for LED
Output Current
Iout4
-
Iout4
-
-
20 mA Per LED port 1ch
-
60 mA Total LED port current
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TSZ02201-0A2A0D300110-1-2
10.Apr.2015 Rev.006