W-6137 Datasheet, PDF (4/16 Pages) Copal Electronics – CMOS Boost Converter

W-6137
TYPICAL CHARACTERISTICS
(V_IN = 3.6 V, C_IN = 1.0 F, C_OUT = 0.22 F, L = 22 H with 3 LEDs at 20 mA, T_AMB = 25$C, unless otherwise specified.)
120
1.00
VFB = 0.4 V
100
0.75
80
60
0.50
40
20
0
2.5
310
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
Figure 2. Quiescent Current vs. V_IN
(Not Switching)
3 LEDs
305
0.25
0
5.0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE (V)
Figure 3. Quiescent Current vs. V_IN
(Switching)
310
3 LEDs
305
300
300
295
295
290
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE (V)
Figure 4. FB Pin Voltage vs. Supply Voltage
290
0
5
10
15
20
25
30
OUTPUT CURRENT (mA)
Figure 5. FB Pin Voltage vs. Output Current
1.10
2.0
3 LEDs at 20 mA
1.05
1.5
1.00
1.0
0.95
0.5
0.90
2.5
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
Figure 6. Switching Frequency vs. Supply
Voltage
0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE (V)
Figure 7. Switch ON Resistance vs.
Input Voltage
4