NCP1406
L 6.8 mH
C1 1.0 mF
D3
V
OUT
V
IN
30 V
2.0 V to 5.5 V
C
OUT1
2.0 mA at V = 2.0 V
IN
10 mF
16 V
35 mA at V = 5.5 V
D2
IN
C
10 mF
6.3 V
IN
CE
1
LX
5
C2
7.0 pF
R
1
2.2 MW
D1
FB
2
C
OUT2
10 mF
16 V
VDD
3
GND
4
R
91 kW
2
R
1
+ 1.19 ǒ ) 1Ǔ
V
OUT
R
2
L: CR43−6R8MC, Sumida
CIN: ECJ2FB0J106M, Panasonic
COUT1, COUT2: ECJ3YB1C106M, Panasonic
C1: ECJ2FB1C225K, Panasonic
D1, D2, D3: MBR0540T1, ON Semiconductor
Figure 53. Step−Up DC−DC Converter with 30 V Output Voltage
D3
D4
V
OUT
−28 V
C2
C3
9.0 mA at V = 3.3 V
3.3 mF
50 V
IN
L 8.2 mH
D2
20 mA at V = 5.0 V
IN
2.2 mF/50 V
V
IN
3.3 V to 5.0 V
C1
1 mF
50 V
Q1
CE
1
LX
5
D1
C
10 mF
6.3 V
IN
C4
750 pF to
2000 pF
R
1
FB
2
VDD
3
GND
4
R
2
R
1
[ * 1.19 ǒ ) 1Ǔ) 1
V
OUT
R
2
L: CR43−8R2MC, Sumida
CIN: ECJ2FB0J106M, Panasonic
C1: ECJGVB1C105M, Panasonic
C2: ECJ5YB1H335M, Panasonic
C3: ECJ4YB1H105M, Panasonic
Q1: MGSF1N03T1, ON Semiconductor /
NTHS5402T1, ON Semiconductor
D1, D2: MMSD914T1, ON Semiconductor
D3: MBR0530T1, ON Semiconductor
D4: MBR0530T1 x 2, ON Semiconductor
Figure 54. Voltage Inverting DC−DC Converter with −28 V Output Voltage
http://onsemi.com
20
ONSEMI [ ONSEMI ]
