mic4811 Micrel Semiconductor, mic4811 Datasheet - Page 4

• Manufacturer Part Number: mic4811
• Manufacturer: Micrel Semiconductor

Typical Characteristics
Micrel Inc.
December 2010
140
120
100
100
51.0
50.5
50.0
49.5
49.0
48.5
48.0
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
-40 -20
0
3.0
LED2
LED6
20
3.5
0
Average Current
vs. Temperature
vs. Input Voltage
Dropout Voltage
TEMPERATURE (°C)
LED4
vs. Duty Cycle
INPUT VOLTAGE (V)
DUTY CYCLE (% )
20 40 60 80 100 120 140
Peak ILED
LED5
40
4.0
LED3
60
4.5
LED1
R
SET
80
5.0
= 16.5kΩ
100
5.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1000
100
10
-40 -20
1
1
Average Current Matching
Single Channel Current
vs. Temperature
0
TEMPERATURE (°C)
20 40 60 80 100 120 140
10
4
RSET (kΩ)
vs. R
SET
100
R
SET
= 16.5kΩ
1000
900
800
700
600
500
400
300
200
100
52.0
51.5
51.0
50.5
50.0
49.5
49.0
48.5
48.0
0
-40 -20
0
Single Channel Dropout
LED6
LED4
100
vs. LED Current
vs. Temperature
0
LED CURRENT (mA)
TEMPERATURE (°C)
LED Current
LED5
20 40
200
M9999-123110-A
60 80 100 120 140
300
LED2
R
SET
400
MIC4811
LED1
LED3
= 16.5kΩ
500