MB39C313 Datasheet, PDF (34/52 Pages) Fujitsu Component Limited. – 4ch System Power Management IC for LCD Panel

MB39C313
(2) Boost Converter Characteristic
Efficiency vs. Output Current
VIN = 12 V, VS = 17.7 V, L2 = 6.8 μH
100
90
80
70
60
50
40
30
20
10
0
0
0.5
1
1.5
Load Current Io (A)
PWM Operation
Continuous Mode
VIN = 12 V, VS = 17.7 V, ILOAD = 1.5 A
SW
10 V/div
Soft Start
VIN = 12 V, VS = 17.7 V, ILOAD = 1.2 A, CSS = 22 nF
VO2
5 V/div
1
ILx2
1 A/div
2
Time base : 2 ms/div
PWM Operation
Discontinuous Mode
VIN = 12 V, VS = 17.7 V, ILOAD = 10 mA
SW
10 V/div
2
1
VO2
50 mV/div
3
ILx2
1 A/div
Time base : 1 μs/div
2
1
VO2
50 mV/div
ILx2
500 mA/div
3
Time base : 1 μs/div
Output Voltage vs. Output Current
17.873
17.823
17.773
17.723
17.673
17.623
17.573
VIN = 8 V
VIN = 10 V
VIN = 12 V
17.523
VIN = 14 V
0
0.5
1
1.5
Load Current Io (A)
Note : Output current is limited in low input voltage configuration. Refer to “■ APPLICATION MANUAL”
for Boost converter design.
34
DS04–27267–1E