AIC1648 Datasheet, PDF (4/10 Pages) Analog Intergrations Corporation – Built-in OVP White LED Step-Up Converter

AIC1648
TYPICAL PERFORMANCE CHARACTERISTICS
95.0
94.5
94.0
93.5
93.0
92.5
92.0
-50
0
50
100
150
Temperature (°C)
Fig. 2 Feedback Voltage vs. Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4-50
Fig. 3
0
50
100
150
Temperature (°C)
Switching Frequency vs. Temperature
70
60
FB=V_IN
50
40
Non-Switching
30 ₂
3
4
5
6
Supply Voltage (V)
Fig. 4 Supply Current vs. Supply Voltage
1.6
FB=GND
1.4
1.2
1.0
0.8
0.6
2
Fig. 5
Switching
3
4
5
6
Supply Voltage (V)
Supply Current vs. Supply Voltage
1.4
1.3
1.2
1.1
1.0
0.9
0.8
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Supply Voltage (V)
Fig. 6 R_DS-ON vs. Supply Voltage
100
V_IN=3.6V; L=10µH
80 ^CIN^{=1µF, C}OUT^=0.22µF
3LEDs
60
100Hz & 200Hz
40
500Hz
20 _1KHz
2KHz
00
Fig. 7
3KHz
20
40
60
80
100
SHDN PIN PWM Duty (%)
Dimming Control by Shutdown PIN
4