SC657ULTRT Semtech, SC657ULTRT Datasheet - Page 6

• Manufacturer Part Number: SC657ULTRT
• Description: Backlight Driver For 5 LEDs With SemPulseTM Interface
• Manufacturer: Semtech

Typical Characteristics
All data taken with T
100
100
100
90
90
80
70
60
50
80
70
60
50
90
70
60
50
80
4.2
4.2
4.2
C
V
V
IN
OUT
Backlight Efficiency (5 LEDs) — 4.5mA Each
OUT
Backlight Efficiency (5 LEDs) — 25mA Each
Backlight Efficiency (5 LEDs) — 12mA Each
= C
= 3.45V
= 3.27V
OUT
=4.7µF, V
A
= +25 °C, V
3.9
3.9
3.9
OUT
= 3.62V
IN
= 3.7V, C
3.6
3.6
3.6
V
V
V
IN
IN
IN
IN
(V)
(V)
(V)
= C

3.3
3.3
3.3
= C
2
= C
OUT
= 2.2µF (ESR = 0.03Ω) unless otherwise noted.
3
3
3
2.7
2.7
2.7
-2
-3
-3
-1
-2
-2
-1
-3
3
-1
3
2
0
1
2
1
0
2
1
0
3
4.2
4.2
4.2
C
IN
Backlight Matching (5 LEDs) — 4.5mA Each
Backlight Matching (5 LEDs) — 25mA Each
Backlight Matching (5 LEDs) — 12mA Each
= C
OUT
= 4.7µF
3.9
3.9
3.9
3.6
3.6
3.6
V
V
V
IN
IN
IN
(V)
(V)
(V)
3.3
3.3
3.3
SC657
3
3
3
2.7
2.7
2.7
6