Typical operating characteristics – Rainbow Electronics MAX6975 User Manual
Page 4
MAX6974/MAX6975
24-Output PWM LED Drivers
for Message Boards
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
DD
= 3.3V, T
A
= +25°C, unless otherwise noted.)
OPERATING CURRENT CONSUMPTION
vs. SUPPLY VOLTAGE V
DD
MAX6974 toc01
SUPPLY VOLTAGE V
DD
(V)
I
DD
(mA)
3.4
3.3
3.2
3.1
53
49
51
55
45
47
3.0
3.5
3.6
T
A
= -40
°C
T
A
= +25
°C
T
A
= +125
°C
T
A
= +85
°C
f
CLKI
= 32MHz
CALDAC = 0xFF
OPERATING CURRENT CONSUMPTION
vs. SUPPLY VOLTAGE V
DD
MAX6974 toc02
SUPPLY VOLTAGE V
DD
(V)
I
DD
(mA)
3.5
3.4
3.3
3.2
3.1
24
26
28
30
20
22
3.0
3.6
T
A
= -40
°C
T
A
= +25
°C
T
A
= +85
°C
T
A
= +125
°C
f
CLKI
= 0MHz
CALDAC = 0x00
LED OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
MAX6974 toc03
OUTPUT VOLTAGE (V)
I
SINK
(mA)
5
6
4
3
2
1
5
15
10
25
20
30
35
0
0
7
T
A
= -40
°C
T
A
= +125
°C
T
A
= +25
°C
T
A
= +85
°C
LED OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
MAX6974 toc04
OUTPUT VOLTAGE (V)
I
SINK
(mA)
5
6
4
3
2
1
5
15
10
25
20
30
35
0
0
7
V
DD
= +3.0V
V
DD
= +3.3V
V
DD
= +3.6V