MIC2299 Datasheet, PDF (4/14 Pages) Micrel Semiconductor – 3.5A Minimum, 2MHz High Brightness LED Driver

Micrel, Inc.
Typical Characteristics
Input Current
vs. Supply Voltage
16
14
12
10
8
6
4
2
0
0 2 4 6 8 10
SUPPLY VOLTAGE (V)
Switching Frequency
vs. Temperature
2.3
2.2
2.1
2.0
1.9
1.8
1.7
TEMPERATURE (°C)
LED Current vs.
Supply Voltage (RBRT-50k)
525
520
515
510
505
500
495
490
485
480
4725.5
T_CASE - 30°C
3 3.5 4 4.5 5 5.5 6
SUPPLY VOLTAGE (V)
Efficiency vs.
Supply Voltage (BRT Open)
95
90
85
80
75
70
65
60
55
520.5 _{3 3.5 4 4.5 5 5.5 6 6.5}
SUPPLY VOLTAGE (V)
October 2007
UVLO
vs. Temperature
2.4
2.3
2.2
2.1
2.0
1.9
1.8
TEMPERATURE (°C)
LED Current vs.
Supply Voltage (BRT-GND)
240
230
220
210
200
190
180
170
1620.5
T_CASE - 30°C
3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
LED Current vs.
Temperature (BRT Open)
1020
1010
1000
990
980
970
960
V_IN = 3V
95-040 _{-20 0 20 40 60 80 100}
TEMPERATURE (C)
Efficiency vs.
Supply Voltage (BRT-GND)
90
85
80
75
70
65
60
55
520.5 _{3 3.5 4 4.5 5 5.5 6 6.5}
SUPPLY VOLTAGE (V)
4
MIC2299
Switching Frequency
vs. Supply Voltage
2.3
2.2
2.1
2.0
1.9
1.8
T_CASE - 25°C
1.72 _{3 4 5 6 7 8 9 10 11}
SUPPLY VOLTAGE (V)
LED Current vs.
Supply Voltage (BRT Open)
1020
1010
1000
990
980
970
960
9520.5
T_CASE - 30°C
3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
1100
1000
900
800
700
600
500
400
300
200
100
00
LED Current
vs. DIM Voltage
40 80 120 160 200
DIM VOLTAGE (mV)
VC_SAT
vs. Switching Current
450
400
350
300
250
200
150
100
50
00 _{0.5 1 1.5 2 2.5 3 3.5 4}
SWITCHING CURRENT (A)
M9999-101907-B