SP6691 Datasheet, PDF (6/15 Pages) Sipex Corporation – Micro Power Boost Regulator Series White LED Driver

PERFORMANCE CHARACTERISTICS: Continued
Refer to the typical application circuit, T_AMB = 25°C, unless otherwise specified.
25
20
15
Tamb=-25C
10
Tamb=25C
Tamb=85C
5
0
1.2
1.8
2.4
3
3.6
4.2
4.8
5.4
Input Voltage (V)
Figure 13. Quiescent Current I_Q vs. V_IN
10
8
6
4
2
0
1.2
1.8
2.4
3
3.6
4.2
4.8
5.4
Input Voltage (V)
Figure 14. Shutdown Pin Current vs. V_IN
600
500
400
300
200
100
0
1.2
1.8
2.4
3
3.6
4.2
4.8
5.4
Input Voltage (V)
Figure 15. I_PK Current Limit vs. V_IN
1.25
1.24
1.23
1.22
1.21
1.20
-30
-10
10
30
50
70
90
Temperature (C)
Figure 17. Feedback Voltage vs. Temperature
400
350
300
250
200
150
100
50
0
-30
-10
10
30
50
70
90
Temperature (C)
Figure 16. Switch Saturation Voltage V_CESAT vs.
Temperature (I_SW = 450mA)
20
16
12
8
4
0
0
20
40
60
80
100
PWM Duty Cycle (%)
Figure 18. Average I_O vs. SHDN Duty Cycle (V_IN=3.3V,
Standard 4x20mA WLED Evaluation Board, PWM
Frequency 100Hz
Date: 5/25/04
SP6691 Micro Power Boost Regualtor, Series White LED Driver
6
© Copyright 2004 Sipex Corporation