MAX6979 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX6979
Maxim Integrated
MAX6979 Datasheet PDF : 12 Pages
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16-Port, 5.5V Constant-Current LED Driver with
LED Fault Detection and Watchdog
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS ON, RSET = 360Ω)
22
20
TA = +125°C
TA = +85°C
18
16
14
TA = +25°C
12
TA = -40°C
10
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
Typical Operating Characteristics (continued)
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 720Ω, V+ = 3.3V)
30
25
TA = -40°C
20
TA = +25°C
15
TA = +85°C
TA = +125°C
10
5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 360Ω, V+ = 3.3V)
60
50
40
TA = -40°C
TA = +25°C
30
TA = +85°C
TA = +125°C
20
10
0
0 0.5 1.0 1.5 2.0 2.5 3.0
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 720Ω, V+ = 5.0V)
30
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 360Ω, V+ = 5.0V)
60
PORT OUTPUT CURRENT vs. SUPPLY
VOLTAGE (RSET = 720Ω, VOUT = 2V)
27.0
25
TA = -40°C
20
TA = +25°C
15
TA = +85°C
TA = +125°C
10
50
TA = -40°C
40
TA = +25°C
30
TA = +85°C
TA = +125°C
20
26.5
TA = -40°C
26.0
TA = +25°C
25.5
TA = +85°C TA = +125°C
25.0
5
10
24.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
PORT OUTPUT VOLTAGE (V)
0
0 0.5 1.0 1.5 2.0 2.5 3.0
PORT OUTPUT VOLTAGE (V)
24.0
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
PORT OUTPUT CURRENT vs. SUPPLY
VOLTAGE (RSET = 360Ω, VOUT = 2V)
54
PORT OUTPUT CURRENT
vs. RSET RESISTANCE (V+ = 5.0V)
50
53
40
TA = -40°C
TA = +25°C
52
30
51
20
TA = +85°C
50
TA = +125°C
10
49
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
0
0
300 600 900 1200 1500
RSET RESISTANCE (Ω)
_______________________________________________________________________________________ 5
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