點晶科技股份有限公司
ST2225A
SILICON TOUCH TECHNOLOGY INC.
Absolute Maximum Ratings
Voltage (any pin)........................Vss to Vss +12V
Power Dissipation (PD)
+25℃......................................................1.52W
+85℃....................................................790mW
Junction Temperature (Tj)........................+150℃
Storage Temperature (Ts)..........-65℃ to +150℃
Lead Temperature (soldering, 10 sec.).....+300℃
Electrical Characteristics
4.5V≦VDD ≦11V, Vss=0V; TA=25℃, bold values indicate -40℃≦TA≦+85℃；unless noted
Symbol
Parameter
Condition
Min
Typ Max
Units
-25℃ to +85℃, excluding output loads
-40℃ to +85℃, excluding output loads
logic-0 level, ±10μA input bias
logic-1 level, 4.75V≦VDD ≦5.25V
logic-1 level, VDD>5.25V
5
m A
IDD Power Supply Current
6
m A
V
V
V
IL
Low-level Data Input Voltage
High-level Data Input Voltage
-0.3
2.2
0.8
V
V
DD
V
IH
V
DD-2
0
V
DD
IBC Brightness Control Input Current Note 2
0.75
10
m A
Segment off, VOUT=3.0V
μA
IOUT OFF Output Sink Current When “OFF”
IOUT ON Output Sink Current When “ON”
Segment on, VOUT=1.0V, Note 3
Brightness input =0μA
Brightness input =100μA
Brightness input =750μA
Input Current =750μA
Note 1
0
10
4
μA
m A
m A
2.0
15
2.7
20
25
VBC Brightness Control Input Voltage
RMATCH Output Matching
3.0
4.3
±20
500
V
%
kHz
ns
Notes 4, 5
f
C
Clock Input Frequency
Clock Input High Time
Clock Input Low Time
Data Input Setup Time
Data Input Hold Time
Data Enable Input Setup Time
Notes 4, 5
t
H
950
950
300
300
100
Notes 4, 5
t
L
ns
t
DS
DH
DES
ns
t
ns
t
ns
Note 1: Output matching is calculated as the percent variation (IMAX + IMIN) / 2
Note 2: With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices.
Note 3: VOUT should be so regulated that power dissipation of the chip will not exceed its limit.
Note 4: AC input waveform specification for test purpose: t
R
≦20ns, t
F
≦20ns, t=500kHz, 50%±10% duty cycle.
Note 5: Clock input rise and fall times must not exceed 300ns.
LED Display Driver
-5-
Version：A.025
SITI [ SILICON TOUCH TECHNOLOGY INC. ]
