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MIC2298 датащи(PDF) 4 Page - Micrel Semiconductor

номер детали MIC2298
подробное описание детали  3.5A Minimum, 1MHz Boost High Brightness White LED Driver
PDF  13 Pages
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производитель  MICREL [Micrel Semiconductor]
домашняя страница  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2298 датащи(HTML) 4 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2298
October 2007
4
M9999-101707-B
Typical Characteristics
0
4
8
12
16
20
02468
10
12
INPUT VOLTAGE (V)
Input Current
vs. Input Voltage
1.8
1.9
2.0
2.1
2.2
2.3
2.4
-40 -20
0
20
40
60
80
TEMPERATURE (°C)
UVLO vs.
Temperature
0.8
0.9
1.0
1.1
1.2
2
345
6789 10 11
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
TA = 25°C
0.8
0.9
1.0
1.1
1.2
-40 -20
0
20
40
60
80
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
VIN = 5V
0.190
0.195
0.200
0.205
0.210
2.5 3 3.5 4 4.5 5 5.5 6 6.5
INPUT VOLTAGE (V)
LED Current vs.
Input Voltage (BRT GND)
TCASE = 25°C
RSENSE
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
2.5 3 3.5 4 4.5 5 5.5 6 6.5
INPUT VOLTAGE (V)
LED Current vs.
Input Voltage (BRT Open)
TCASE = 25°C
RSENSE
0
100
200
300
400
500
600
700
800
900
1000
1100
LED Current
vs. DIM Voltage
0
40
80
120 160 200
DIM VOLTAGE (mV)
60
65
70
75
80
85
90
95
2.5 3 3.5 4 4.5 5 5.5 6 6.5
INPUT VOLTAGE (V)
Efficiency vs.
Input Voltage (BRT Open)
RSENSE
60
65
70
75
80
85
90
95
2.5 3 3.5 4 4.5 5 5.5 6 6.5
INPUT VOLTAGE (V)
Efficiency vs.
Input Voltage (BRT GND)
RSENSE
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
246
8
10 12 14
OUTPUT VOLTAGE (V)
Max DC LED Current
vs. Output Voltage
VIN = 3.0V
25°C
50°C
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
246
8
10 12 14
OUTPUT VOLTAGE (V)
Max DC LED Current
vs. Output Voltage
VIN = 3.6V
25°C
50°C
0
50
100
150
200
250
300
350
400
450
500
0 0.5 1 1.5 2 2.5 3 3.5 4
SWITCH CURRENT (A)
Bipolar Saturation Voltage
vs. Switch Current
TA = 25°C
3.0V
3.6V



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