MM5450 Micrel, MM5450 Datasheet - Page 4

• Manufacturer Part Number: MM5450
• Description: LED Display Driver
• Manufacturer: Micrel

MM5450/5451
Absolute Maximum Ratings
Voltage (any pin) ...................................... V
Power Dissipation (P
Junction Temperature (T
Storage Temperature (T
Lead Temperature (soldering, 10 sec.) ................... +300 C
Electrical Characteristics
4.5V
Symbol
V
V
f
t
t
t
t
t
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
MM5450/5451
C
H
L
DS
DH
DES
L
H
+25 C ......................................................................... 1W
+85 C .................................................................. 560mW
V
DD
Output matching is calculated as the percent variation (I
With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices.
Maximum brightness control input current can be 2mA providing it complies with Note 3 and the junction temperature equation.
See Figures 7, 8 and 9 for recommended operating conditions and limits. Absolute maximum for each output should be limited to 40mA.
V
AC input waveform specification for test purpose: t
Clock input rise and fall times must not exceed 300ns.
OUT
11V, V
should be regulated by the user. See Figures 8 and 9 for allowable V
Parameter
Power Supply Current
Data Input Voltage
Brightness Control Input Current
Output Sink Current
Brightness Control Input Voltage
Output Matching
Clock Input Frequency
Clock Input High Time
Clock Input Low Time
Data Input Setup Time
Data Input Hold Time
Data Enable Input Setup Time
Reset Pad Current
SS
D
= 0V; T
)
S
J
) ....................... –65 C to +150 C
) ...................................... +150 C
A
= 25 C, bold values indicate –40 C
SS
to V
R
Condition
–25 C to +85 C, excluding output loads
–40 C to +85 C, excluding output loads
logic-0 level, 10 A input bias
logic-1 level, 4.75V
V
Note 2
segment off, V
segment on, V
brightness input = 0 A
brightness input = 100 A
brightness input = 750 A
input current = 750 A
Note 1
Notes 5, 6
Notes 5, 6
Notes 5, 6
die
DD
SS
20ns, t
MAX
> 5.25V
+12V
+ I
F
MIN
20ns, f = 500kHz, 50% 10% duty cycle.
4
)
OUT
OUT
Operating Ratings
Supply Voltage (V
Ambient Temperature Range (T
T
2.
A
= 3.0V
= 1.0V, Note 3
V
+85 C; unless noted
OUT
DD
vs. I
5.25V
OUT
operation.
DD
– V
SS
) ....................... +4.75V to +11V
V
–0.3
Min
950
950
300
300
100
DD
2.2
2.0
3.0
15
0
0
8
A
–2
) ............. –40 C to +85 C
Typ
2.7
Max
0.75
V
V
500
8.5
0.8
4.3
10
10
10
25
DD
DD
4
20
May 2000
Micrel
Units
kHz
mA
mA
mA
mA
mA
ns
ns
ns
ns
ns
%
V
V
V
V
A
A
A