BU97931FV-LB Datasheet, PDF (3/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV-LB MAX 112 segments (SEG28×COM4)
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
Input Voltage Range
Operational Temperature
Range
Storage Temperature Range
VLCD
Pd
VIN
Topr
Tstg
-0.5 to +7.0
0.8
-0.5 to VDD +0.5
-40 to +85
-55 to +125
V Power supply for LCD
When operated more than Ta=25^°C, subtract 8.0mW
W
per degree. (using ROHM standard board)
(board size:74.2mm×74.2mm×1.6mm material: FR4
board copper foil: land pattern only)
V
°C
°C
Iout1
5
mA SEG output
Output current
Iout2
Iout3
5
mA COM output
10
mA GPO output
Iout4
50
mA LED output
Caution:Operating the IC over the absolute maximum ratings may damage the IC.The damage can either be a short circui 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=-40°C to +85°C, VSS=0V)
Parameter
Symbol
Ratings
Unit
Min Typ Max
Power Supply Voltage 1
VDD
1.8
-
3.6 V
Power Supply Voltage 2
VLCD 2.7
-
5.5 V
Output Current
Iout4
-
-
20 mA
Remarks
Power supply
Power supply for LCD
Per LED port 1ch
Electrical Characteristics
DC characteristics (Ta= -40°C to +85°C, VDD=1.8V to 3.6V, VLCD=3.3V to 5.5V, VSS=0)
Parameter
Limits
Symbol
Unit
Min Typ Max
Conditions
“H” Level Input Voltage
VIH 0.8VDD -
VDD V SD, SCL, CSB, CLKIN
“L” Level Input Voltage
VIL
VSS
- 0.2VDD V SD, SCL, CSB, CLKIN
Hysteresis Width
VH
-
0.2
-
V SCL, VDD=3.3V, Ta=25°C
“H” Level Input Current
“L” Level Input Current
“H” Level Output Voltage
(Note2)
“L” Level Output Voltage
(Note2)
IIH1
-
-
5
µA
SD, SCL, CSB, CLKIN,
VI=3.6V
IIL1
-5
-
-
µA
SD, SCL, CSB, CLKIN,
VI=0V
VOH1
VLCD
-0.4
-
-
V
Iload=-50µA, VLCD=5.0V
SEG0 to SEG27
VOH2
VLCD
-0.4
-
-
V
Iload=-50µA, VLCD=5.0V,
COM0 to COM3
VOH3
VLCD
-0.6
-
-
V
Iload=-1mA,VLCD=5.0V,
SEG23 to SEG27(GPO mode)
VOL1
-
-
0.4
V
Iload= 50µA, VLCD=5.0V,
SEG0 to SEG27
VOL2
-
-
0.4
V
Iload= 50µA, VLCD=5.0V,
COM0 to COM3
VOL3
-
-
0.5
V
Iload=1mA, VLCD=5.0V,
SEG23 to SEG27(GPO mode)
VOL4
-
0.11
0.5
V
Iload=20mA, VLCD=5.0V,
LED
(Note 1) Power save mode 1 and frame inversion setting
(Note 2) Iload: In this case, load current from only one port
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TSZ02201-0P4P0D300490-1-2
26.Feb.2014 Rev.002