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SC658 Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC658
Description  Backlight Driver for 4 LEDs with SemPulseTM Interface
PDF  22 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC658 Datasheet(HTML) 6 Page - Semtech Corporation

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6
Typical Characteristics
SC658
All data taken with T
A = +25 °C, VIN = 3.7V, CIN = C = C2 = COUT = 2.2µF (ESR = 0.03Ω) unless otherwise noted.
Backlight Efficiency (4 LEDs) — 25mA Each
50
60
70
80
90
100
2.7
3
3.3
3.6
3.9
4.2
VIN (V)
CIN = COUT = 4.7µF, VOUT = 3.61V
50
60
70
80
90
100
2.7
3
3.3
3.6
3.9
4.2
VIN (V)
VOUT = 3.44V
-3
-2
-1
0
1
2
3
2.7
3
3.3
3.6
3.9
4.2
CIN = COUT = 4.7µF
VIN (V)
50
60
70
80
90
100
2.7
3
3.3
3.6
3.9
4.2
VIN (V)
VOUT = 3.27V
-3
-2
-1
0
1
2
3
2.7
3
3.3
3.6
3.9
4.2
VIN (V)
Backlight Matching (4 LEDs) — 4.5mA Each
-3
-2
-1
0
1
2
3
2.7
3
3.3
3.6
3.9
4.2
VIN(V)
Backlight Efficiency (4 LEDs) — 12mA Each
Backlight Matching (4 LEDs) — 12mA Each
Backlight Matching (4 LEDs) — 25mA Each
Backlight Efficiency (4 LEDs) — 4.5mA Each



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