MIC2292_05 Datasheet, PDF (4/9 Pages) Micrel Semiconductor – High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP

MIC2292/93
Typical Characteristics
100
99
98
97
96
95
94
93
92
91
90
0
Feedback Voltage
vs. Input Voltage
2 4 6 8 10 12
V_IN (V)
Switch Frequency
vs. Temperature
1.4
1.2
1
0.8
0.6
0.4
0.2
-040 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Schottky Reverse
Leakage Current
2.5
2
1.5
V_R = 25V
1
V_R = 16V
0.5
030
V_R = 10V
40 50 60 70 80 90 100
TEMPERATURE (°C)
Switch Frequency
vs. Temperature
2
1.6
1.2
0.8
0.4
-040
0
40
80 120
TEMPERATURE (°C)
M9999-070105
Shutdown Current
vs. Input Voltage
5
4
3
2
1
0
0 2 4 6 8 10 12
V_IN (V)
EN Pin Bias Current
vs. Temperature
50
45
40
35
30 ^{IE N = 10V}
25
20
15 ^IE N ^{= 4.2V}
10
I_{E N} = 3.6V
-0550I^E
N
=
3.0V
0
50
100
TEMPERATURE (°C)
Saturation Voltage
vs. Temperature
550
500
450
400
350
30-040
I_{S W} = 500mA
0
40
80 120
TEMPERATURE (°C)
Switch Saturation Voltage
vs. Current
600
500
400
V_IN = 2.5V
300
200
V_IN = 5V
100
00 _{100 200 300 400 500}
I_SW (mA)
4
Micrel, Inc.
Quiescent Current
vs. Input Voltage
5
4
3
2
1
0
0 2 4 6 8 10 12
V_IN (V)
Schottky Forward
Voltage Drop
700
600
500
400
300
200
100
0
SCHOTTKY FORWARD VOLTAGE DROP (mV)
Current Limit
vs. Temperature
900
850
800
750
700
650
V_IN = 2.5V
60-040
0
40
80 120
TEMPERATURE (°C)
July, 2005