NCP1406
L 8.2 mH
D1
V
OUT
V
IN
Up to 30 V
3.0 V to 5.5 V
C
3.3 mF
50 V
Q1
OUT
6.0 mA at V = 3.0 V
35 mA at V = 5.5 V
IN
IN
D2
C1
R
1
CE
1
LX
5
C
IN
5 pF to
1000 pF
10 mF
FB
2
10 V
R
2
VDD
3
GND
4
R
1
+ 1.19 ǒ ) 1Ǔ
V
OUT
R
2
L: CR43−8R2MC, Sumida
CIN: ECJ2FB0J106M, Panasonic
COUT: ECJ5YB1H335M, Panasonic
Q1: MGSF1N03T1, ON Semiconductor /
NTHS5402T1, ON Semiconductor
D1: MBR0530T1, ON Semiconductor
D2: MMSD914T1, ON Semiconductor
Figure 51. Step−Up DC−DC Converter with 30 V Output Voltage
L 10 mH
Q1
V
IN
V
OUT
1.6 V
200 mA
3.0 V to 5.5 V
R
1 k
GS
C
22 mF
6.3 V
OUT
C1
1000 pF
R
39 k
CE
1
LX
5
1
C
IN
D1
10 mF
FB
2
6.3 V
R
1
110 k
VDD
3
GND
4
R
1
+ 1.19 ǒ ) 1Ǔ
V
OUT
R
2
L: CR43−100MC, Sumida
CIN: ECJ2FB0J106M, Panasonic
COUT: ECJHVB0J226M, Panasonic
Q1: MGSF1P02LT1, ON Semiconductor
D1: MBR0530T1, ON Semiconductor
Figure 52. Step−Down DC−DC Converter with 1.6 V Output Voltage for DSP Circuit
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