c644ultrt Semtech Corporation, c644ultrt Datasheet - Page 6

• Manufacturer Part Number: c644ultrt
• Description: Light Management Unit With 4 Ldos And Sempulse Interface
• Manufacturer: Semtech Corporation

Typical Characteristics
140
100
120
300
260
220
180
140
100
80
60
40
60
50
40
30
20
10
4.2
4.2
4.2
V
V
V
OUT
OUT
OUT
Battery Current (6 LEDs) — 4.0mA Each
Battery Current (6 LEDs) — 25mA Each
Battery Current (6 LEDs) — 12mA Each
= 3.50V, I
= 3.37V, I
= 3.21V, I
3.9
3.9
3.9
OUT
OUT
OUT
= 150mA, 25
= 72mA, 25°C
= 24mA, 25°C
3.6
3.6
3.6
°C
V
V
V
IN
IN
IN
(V�
(V�
(V�
3.3
3.3
3.3
3.0
3.0
3
2.7
2.7
2.7
100
100
100
90
70
60
50
90
80
70
50
90
70
60
50
80
60
80
4.2
4.2
4.2
V
V
V
Backlight Efficiency (6 LEDs) — 12mA Each
Backlight Efficiency (6 LEDs) — 25mA Each
OUT
Backlight Efficiency (6 LEDs) — 4.0mA Each
OUT
OUT
= 3.37V, I
= 3.21V, I
= 3.50V, I
3.9
3.9
3.9
OUT
OUT
OUT
= 72mA, 25
= 24mA, 25°C
= 150mA, 25
3.6
3.6
3.6
°C
°C
V
V
V
IN
IN
IN
(V�
(V�
(V�
3.3
3.3
3.3
3.0
3.0
3.0
SC644
2.7
2.7
2.7
6
6