MIC4811_1104 Datasheet, PDF (4/12 Pages) Micrel Semiconductor – High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control

Micrel Inc.
Typical Characteristics
100
90
80
70
60
50
40
30
20
10
0
0
Average Current
vs. Duty Cycle
20 40 60 80 100
DUTY CYCLE (% )
Dropout Voltage
vs. Temperature
140
120
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Peak ILED
vs. Input Voltage
51.0
50.5
LED2
50.0
LED5
49.5
LED6
LED3
49.0
LED4
LED1
48.5
48.0
3.0
R_SET = 16.5kΩ
3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Single Channel Current
1000
vs. R_SET
100
10
1
1
10
100
1000
RSET (kΩ)
Average Current Matching
vs. Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
R_SET = 16.5kΩ
0.0
-40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
MIC4811
Single Channel Dropout
vs. LED Current
900
800
700
600
500
400
300
200
100
0
0 100 200 300 400 500
LED CURRENT (mA)
LED Current
vs. Temperature
52.0
51.5
51.0
LED1
LED5
50.5
LED4
50.0
49.5
LED6
49.0
LED2 ^LED3
48.5
48.0
-40 -20
R_SET = 16.5kΩ
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
April 2011
4
M9999-041411-B