sc656 Semtech Corporation, sc656 Datasheet - Page 6

• Manufacturer Part Number: sc656
• Description: Backlight Driver For 7 Leds With Charge Pump And Pwm Control
• Manufacturer: Semtech Corporation

Typical Characteristics (continued)
100
100
100
60
50
90
80
70
50
Charge Pump Efficiency (7 LEDs) — 25mA Each
90
80
70
60
Charge Pump Efficiency (7 LEDs) — 12mA Each
90
80
70
60
50
Charge Pump Efficiency (7 LEDs) — 5mA Each
4.2
4.2
4.2
V
V
V
OUT
OUT
OUT
= 3.28V, I
= 3.56V, I
= 3.42V, I
3.9
3.9
3.9
OUT
OUT
OUT
= 35mA, 25°C
= 175mA, 25°C
= 84mA, 25°C
3.6
3.6
3.6
V
V
V
IN
IN
IN
(V�
(V�
(V�
3.3
3.3
3.3
3
3
3
2.7
2.7
2.7
400
350
300
250
200
150
100
135
125
115
105
95
85
75
80
70
60
50
40
30
20
4.2
4.2
4.2
V
V
V
OUT
OUT
OUT
Backlight Current (7 LEDs) — 12mA Each
Backlight Current (7 LEDs) — 25mA Each
Backlight Current (7 LEDs) — 5mA Each
= 3.56V, I
= 3.42V, I
= 3.28V, I
3.9
3.9
3.9
OUT
OUT
OUT
= 175mA, 25°C
= 84mA, 25°C
= 35mA, 25°C
3.6
3.6
3.6
V
V
V
IN
IN
IN
(V�
(V�
(V�
3.3
3.3
3.3
3
3
3
SC656
2.7
2.7
2.7
6