mic3203 Micrel Semiconductor, mic3203 Datasheet - Page 5

• Manufacturer Part Number: mic3203
• Description: High-brightness Driver Controller With High-side Current Sense
• Manufacturer: Micrel Semiconductor

Typical Characteristics
100
Micrel, Inc.
100
March 2010
1.03
1.02
1.01
0.99
0.98
0.97
90
80
70
60
75
50
25
0
1
0
0
0
1LED
2LED
4LED
6LED
8LED
1LED
5
5
5
Normalized LED Currents
2LED
10
10
10
vs. Input Voltage
vs. Input Voltage
vs Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
L=150µH
ILED=1A
Duty Cycle
15
Efficiency
4LED
15
15
4LED
20
20
20
6LED
6LED
25
25
25
30
30
30
8LED
8LED
35
35
35
10LED
L=68µH
ILED=1A
L=150µH
ILED=1A
10LED
10LED
40
40
40
45
45
45
100
100
90
80
70
60
75
50
25
350
300
250
200
150
100
0
50
0
0
0
0
2LED
4LED
1LED
6LED
8LED
L=150µH
ILED=1A
1LED
5
5
5
2LED
10
10
10
vs. Input Voltage
vs Input Voltage
vs Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
L=68µH
ILED=1A
Frequency
Duty Cycle
Efficiency
15
15
4LED
15
4LED
20
20
20
5
6LED
25
25
25
6LED
30
30
30
8LED
8LED
35
35
35
10LED
L=68µH
ILED=1A
10LED
10LED
40
40
40
45
45
45
1.03
1.02
1.01
0.99
0.98
0.97
700
600
500
400
300
200
100
1
0
0
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1LED
L = 68µH
ILED = 1A
1LED
0
5
Normalized LED Currents
5
2LED
5
10
10
vs. Input Voltage
vs Input Voltage
INPUT VOLTAGE (V)
2LED
INPUT VOLTAGE (V)
vs. Input Voltage
10
Supply Current
INPUT VOLTAGE (V)
Frequency
4LED
15
15
15
6LED
20
20
20
6LED
4LED
M9999-032910-A
TA = 25°C
ILED = 0A
25
25
25
8LED
8LED
30
30
30
MIC3203
35
35
35
10LED
40
L=150µH
ILED=1A
10LED
40
40
45
45
45