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MAQ3203 Ver la hoja de datos (PDF) - Micrel

Número de pieza
componentes Descripción
Fabricante
MAQ3203
High-Brightness LED Driver Controller with High-Side Current Sense
Micrel
Micrel Micrel
MAQ3203 Datasheet PDF : 23 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Micrel, Inc.
Typical Characteristics
Efficiency
vs Input Voltage
100
90
4LED
6LED
80
8LED
10LED
70
60
0
L=150µH
ILED=1A
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Normalized LED Currents
vs. Input Voltage
1.03
1.02
L=68µH
ILED=1A
1.01
1
1LED
0.99
2LED
4LED
0.98
6LED 8LED 10LED
0.97
0
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Duty Cycle
vs. Input Voltage
100
75
1LED
50
2LED
10LED
4LED
8LED
6LED
25
L=150µH
ILED=1A
0
0 5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Efficiency
vs Input Voltage
100
90
80
70
60
0
4LED
6LED
8LED
10LED
L=68µH
ILED=1A
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Frequency
vs. Input Voltage
350
300
L=150µH
ILED=1A
250
200
4LED
150
2LED
100 1LED
50
6LED
10LED
8LED
0
0 5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Duty Cycle
vs Input Voltage
100
75
1LED
50
2LED
4LED
10LED
8LED
6LED
25
L=68µH
ILED=1A
0
0 5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
MAQ3203
Normalized LED Currents
vs Input Voltage
1.03
1.02
1.01
4LED 6LED
2LED
1LED
1
10LED
8LED
0.99
0.98
0.97
0
L=150µH
ILED=1A
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Frequency
vs. Input Voltage
700
600
L=68µH
ILED=1A
500
4LED
400
2LED
300
200 1LED
100
0
0
6LED 8LED 10LED
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
Supply Current
vs. Input Voltage
1.4
1.2
1.0
TA = 25°C
ILED = 0A
0.8
0.6
0.4
0.2
0.0
0
5 10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
March 2011
5
M9999-032411-A

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