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MIC2874YCS Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC2874YCS
Description  1.2A High-Brightness Flash LED Driver with Single-Wire Serial Interface
PDF  22 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2874YCS Datasheet(HTML) 5 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2874
Typical Characteristics
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
Shutdown Current
vs. Temperature
F
SW = 4MHz
V
DC = 0V
170
175
180
185
190
195
200
205
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
Standby Current
vs. Temperature
F
SW = 4MHz
V
DC = 3.6V
2.2
2.3
2.4
2.5
2.6
2.7
2.8
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
UVLO Thresholds
vs. Temperature
F
SW = 4MHz
RISING
FALLING
3.80
3.85
3.90
3.95
4.00
4.05
4.10
4.15
4.20
-40 -20
0
20
40
60
80 100 120
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
V
IN = 3.6V
50
60
70
80
90
100
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
Maximum Duty Cycle
vs. Temperature
F
SW = 4MHz
V
IN = 3.6V
1.4
1.5
1.6
1.7
1.8
1.9
2.0
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
LED Short Threshold Voltage
vs. Temperature
F
SW = 4MHz
V
IN = 3.6V
1.7
1.8
1.9
2.0
2.1
2.2
2.3
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
LED Short Test Current
vs. Temperature
F
SW = 4MHz
V
IN = 3.6V
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
2.5
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
Boost Switching Frequency
vs. Input Voltage
T
A = -40°C
T
A = 25°C
L = 0.47µH
C
OUT = 4.7µF
I
LED = 1.2A
T
A = 85°C
50
60
70
80
90
100
2.6
3.0
3.4
3.8
4.2
4.6
5.0
INPUT VOLTAGE (V)
WLED Power Efficiency
vs. Input Voltage (V
F = 3.4V)
L = 0.47µH, 30m
Ω
C
OUT = 4.7µF
LED V
F = 3.4V
I
LED =100mA
I
LED =250mA
I
LED =400mA
I
LED =600mA
I
LED =1.0A
I
LED =1.2A
August 26, 2014
5
Revision 1.0



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