cat3649 ON Semiconductor, cat3649 Datasheet - Page 5

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

−10
1.3
1.2
1.1
1.0
0.9
0.8
0.7
10
−2
−4
−6
−8
4
3
2
1
0
8
6
4
2
0
−40
5.0
2.5
Figure 4. Quiescent Current vs. Input Voltage
Figure 6. LED Current Change vs. Input
V
F
(V
3.0
Figure 8. Switching Frequency vs.
= 3.3 V
4.5
IN
= 3.6 V, PWM = V
0
1x
3.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Temperature
1.33x, 2x Mode
4.0
1.5x Mode
Voltage
4.0
40
TYPICAL PERFORMANCE CHARACTERISTICS
IN
, I
3.5
OUT
1.33x
4.5
= 120 mA (6 LEDs at 20 mA), C
T
AMB
80
3.0
= 25°C unless otherwise specified.)
5.0
1.5x
http://onsemi.com
2x
120
2.5
5.5
5
−10
10
−2
−4
−6
−8
12
10
8
6
4
2
0
4
3
2
1
0
8
6
4
2
0
−40
−40
IN
2.0
Figure 9. Output Resistance vs. Input Voltage
Figure 5. Quiescent Current vs. Temperature
= C
1.33x
1.5x
2x
1x
OUT
2.5
Figure 7. LED Current Change vs.
V
1.5x
= C
F
2x
= 3.3 V
1
0
0
3.0
= C
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
2
= 1 mF, C
Temperature
3.5
40
40
PWM
4.0
= 47 nF,
1.33x
V
V
V
V
IN
IN
IN
IN
4.5
= 2.6 V
= 2.9 V
= 3.3 V
= 4.0 V
80
80
5.0
1x
120
120
5.5