MAX8822ETE 查看數據表（PDF） - Maxim Integrated
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MAX8822ETE
Maxim Integrated
MAX8822ETE Datasheet PDF : 15 Pages
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Ultra-Efficient Negative Charge-Pump LED
Driver with Dual LDOs in 3mm x 3mm Thin QFN
Typical Operating Characteristics
(VIN = 3.6V, VEN_ = VIN, Circuit of Typical Operating Circuit, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MATCHED WLEDs)
100
90
80
70
20.8mA/LED
60
50
14.4mA/LED
6.4mA/LED
40
1.6mA/LED
30
20
10
0
2.7
VIN FALLING
3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MATCHED WLEDs)
100
90
14.4mA/LED
20mA/LED
80
70
6.4mA/LED 1.6mA/LED
60
50
40
4.2 3.9 3.8 3.7 3.6 3.5 3.4 3.0
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MISMATCHED WLEDs)
100
90
14.4mA/LED
80
70
60
50
40
1.6mA/LED
30
20
10
0
2.7
VIN FALLING
3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MISMATCHED WLEDs)
100
90
80
70
1.6mA/LED
60
14.4mA/LED
50
40
4.2 3.9 3.8 3.7 3.6 3.5 3.4 3.0
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
EFFICIENCY vs. SUPPLY VOLTAGE
(4 MISMATCHED WLEDs)
100
20.8mA/LED
90
80
70
60
50
6.4mA/LED
40
30
20
10
0
2.7
VIN FALLING
3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
EFFICIENCY vs. Li+ BATTERY VOLTAGE
(4 MISMATCHED WLEDs)
100
90
80
20.8mA/LED
70
6.4mA/LED
60
50
40
4.2 3.9 3.8 3.7 3.6 3.5 3.4 3.0
Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(4 WLEDs)
140
VIN FALLING MISMATCHED LEDs
120
100
20.8mA/LED
80
14.4mA/LED
60
40
6.4mA/LED
20
1.6mA/LED
0
2.7 3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(RGB MODULE)
100 RGB MODULE: LUMEX SML-LX3632SISUGSBC,
VIN FALLING
80
20.8mA/LED
60
14.4mA/LED
40
6.4mA/LED
20
1.6mA/LED
0
2.7 3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
INPUT VOLTAGE RIPPLE
vs. SUPPLY VOLTAGE (4 WLEDs)
2.8
VIN FALLING, MISMATCHED LEDs
2.4
2.0 20.8mA/LED
1.6
1.2
14.4mA/LED
0.8
0.4
6.4mA/LED
0
2.7 3.0 3.3 3.6 3.9 4.2
SUPPLY VOLTAGE (V)
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