Datasheet

MAX6970
8-Port, 36V Constant-Current LED Driver
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
10
13
16
19
22
25
3.0 4.03.5 4.5 5.0 5.5
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS ON, R
SET
= 360Ω)
MAX6970 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
T
A
= +125°C
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
10
5
20
15
25
30
PORT OUTPUT CURRENT vs.
PORT OUTPUT VOLTAGE (R
SET
= 720Ω, V+ = 3.3V)
MAX6970 toc05
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +125°C
0
20
10
40
30
50
60
PORT OUTPUT CURRENT vs.
PORT OUTPUT VOLTAGE (R
SET
= 360Ω, V+ = 3.3V)
MAX6970 toc06
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
T
A
= +85°C
T
A
= +25°C
T
A
= +125°C
T
A
= -40°C
0
10
5
20
15
25
30
PORT OUTPUT CURRENT vs.
PORT OUTPUT VOLTAGE (R
SET
= 720Ω, V+ = 5.0V)
MAX6970 toc07
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +125°C
0
20
10
40
30
50
60
PORT OUTPUT CURRENT vs.
PORT OUTPUT VOLTAGE (R
SET
= 360Ω, V+ = 5.0V)
MAX6970 toc08
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
0 1.0 1.50.5 2.0 2.5 3.0
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C
T
A
= +125°C
24.0
24.5
25.0
25.5
26.0
3.0 4.03.5 4.5 5.0 5.5
PORT OUTPUT CURRENT vs. SUPPLY VOLTAGE
(R
SET
= 720Ω, V
OUT
= 2V)
MAX6970 toc09
SUPPLY VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
T
A
= +125°C
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
48
49
50
51
52
3.0 4.03.5 4.5 5.0 5.5
PORT OUTPUT CURRENT vs. SUPPLY VOLTAGE
(R
SET
= 360Ω, V
OUT
= 2V)
MAX6970 toc10
SUPPLY VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
T
A
= +125°C
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
10
20
30
40
50
0
4000
5000
2000
30001000
6000
7000
8000
9000
10,000
PORT OUTPUT CURRENT
vs. R
SET
RESISTANCE (V+ = 5.0V)
MAX6970 toc11
R
SET
RESISTANCE (Ω)
PORT OUTPUT CURRENT (mA)