mic3287 Micrel Semiconductor, mic3287 Datasheet - Page 4

• Manufacturer Part Number: mic3287
• Description: 1.2mhz Pwm White Led Driver With Ovp In Thin Sot-23 And 2mm X 2mm Mfl?
• Manufacturer: Micrel Semiconductor

MIC3287
Typical Characteristics
M9999-022106
0.003
0.002
0.001
840
820
800
780
760
740
720
1.5
1.4
1.3
1.2
1.1
1.0
85
80
75
70
65
60
55
50
45
-40
2.8
2.8
2
V
-25 -10 5 20 35 50 65 80
IN
WHITE LED CURRENT (mA)
White LED Efficiency
4
V
3.2 3.6 4.0 4.4 4.8 5.2 5.6
3.2 3.6 4.0 4.4 4.8 5.2 5.6
=3.2V
IN
Shutdown Current
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
vs. Input Voltage
vs. Input Voltage
=3.6V
6
vs. Temperature
Current Limit
V
IN
8 10 12 14 16 18 20
Frequency
3 Series
=4.2V
V
V
L = 10µH
IN
C
V
IN
OUT
IN
=3.2V
=3.6V
=4.2V
= 0.22µF
260
256
252
248
244
240
2.5
2.4
2.3
2.2
2.1
2.0
85
80
75
70
65
60
55
50
45
2.8
-40
2
-25 -10 5 20 35 50 65 80
WHITE LED CURRENT (mA)
White LED Efficiency
4
3.2 3.6 4.0 4.4 4.8 5.2 5.6
Quiescent Current
Feedback Voltage
INPUT VOLTAGE (V)
vs. Input Voltage
TEMPERATURE (°C)
6
vs. Temperature
V
4
IN
8 10 12 14 16 18 20
4 Series
=4.2V
V
L = 10µH
C
IN
OUT
=3.6V
V
V
= 0.22µF
IN
IN
=3.6V
=3.2V
254
253
252
251
250
249
248
900
850
800
750
700
650
600
12
10
8
6
4
2
0
-40
2.8
-40
-25 -10 5 20 35 50 65 80
-25 -10 5 20 35 50 65 80
3.2 3.6 4.0 4.4 4.8 5.2 5.6
V
Enable Pin Current
Feedback Voltage
EN
INPUT VOLTAGE (V)
vs. Input Voltage
TEMPERATURE (°C)
vs. Temperature
vs. Temperature
TEMPERATURE (°C)
V
=1.8V
Curremt Limit
EN
V
=2.5V
EN
=5V
V
IN
February 2006
V
=3.6V
EN
=3.3V
Micrel, Inc.