SGM3144 Datasheet, PDF (6/12 Pages) SG Micro Corp – Charge Pump White LED Driver

SGM3144
6-Channel PWM Dimming
Charge Pump White LED Driver
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current vs. Temperature
28.0
27.5
27.0
26.5
26.0
25.5
25.0
V_IN = 3.6V
-55 -35 -15 5 25 45 65 85 105
Temperature (℃)
LED Current Regulation vs. Input Voltage
36
27
18
9
V_LED = 3.2V
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
Input Voltage (V)
Switching Frequency vs. Temperature
1.10
1.05
1.00
0.95
0.90
0.85
0.80
-55 -35 -15 5 25 45 65
Temperature (℃)
85 105
LED Current vs. PWM Duty Cycle
30
PWM = 1kHz
25 PWM = 10kHz
PWM = 32kHz
20 PWM = 50kHz
15
10
5
0
0
20
40
60
80
100
Duty Cycle (%)
SG Micro Corp
6
www.sg-micro.com