cat3649 ON Semiconductor, cat3649 Datasheet - Page 6

• Manufacturer Part Number: cat3649
• Description: Cat3649 6-channel Quad-mode Led Driver With 32 Dimming Levels & Pwm
• Manufacturer: ON Semiconductor

100
90
80
70
60
50
40
4.5
V
V
F
F
Figure 10. Efficiency vs. Input Voltage
= 3.30 V, I
= 3.05 V, I
1x
(V
Figure 14. Power Up in 1.5x Mode
Figure 12. Power Up in 1x Mode
4.0
IN
= 3.6 V, PWM = V
LED
LED
INPUT VOLTAGE (V)
= 20 mA
= 10 mA
3.5
1.33x
TYPICAL PERFORMANCE CHARACTERISTICS
IN
, I
3.0
OUT
= 120 mA (6 LEDs at 20 mA), C
T
AMB
2.5
= 25°C unless otherwise specified.)
1.5x
2x
http://onsemi.com
2.0
6
100
90
80
70
60
50
40
IN
4.2
= C
V
V
1x
F
F
Figure 11. Efficiency vs. Li−Ion Voltage
OUT
= 3.30 V, I
= 3.05 V, I
Figure 13. Power Up in 1.33x Mode
4.0
Figure 15. Power Up in 2x Mode
= C
1
= C
LED
LED
3.8
INPUT VOLTAGE (V)
2
= 1 mF, C
= 20 mA
= 10 mA
3.6
PWM
= 47 nF,
3.4
1.33x
3.2
1.5x
3.0