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SC604A Datasheet(PDF) 12 Page - Semtech Corporation

Part # SC604A
Description  Low Noise, High Efficiency Regulated White LED Driver
PDF  18 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC604A Datasheet(HTML) 12 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
SC604A
POWER MANAGEMENT
OVP Event with LED Open Circuit
Mode Transition Voltage vs. LED Voltage
Startup with 4 LEDs at 20 mA
Efficiency vs. Load at Low Battery
Efficiency vs. Load at High Battery
Quiescent Current Trend
Typical Characteristics
50
60
70
80
90
100
020
40
60
80
100
120
Total Load Current [mA]
VIN = 3.8V
VIN = 4.0V
VIN = 4.2V
50
60
70
80
90
100
0
20406080
100
120
Total Load Current [mA]
VIN = 3.6V
VIN = 2.8V
VIN = 3.4V
0
1
2
3
4
5
0
20
40
60
80
100
120
Total Output Current [mA]
Trend for 4 LEDs
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
0
5
10
15
20
25
30
35
LED Current [mA]
Vf = 3.6V
Vf = 3.4V
Vf = 3.2V
1X to 1.5X Mode for 4 LEDs



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