NCP1406 Datasheet, PDF (20/23 Pages) ON Semiconductor – 25 V/25 mA PFM Step−Up DC−DC Converter

NCP1406
V_IN
2.0 V to 5.5 V
C_IN
10 mF
6.3 V
C2
7.0 pF
L 6.8 mH
C1 1.0 mF _D3
R₁
2.2 MW
R₂
91 kW
CE
1
FB
2
VDD
3
D2
LX
5
D1
GND
4
L: CR43−6R8MC, Sumida
C_IN: ECJ2FB0J106M, Panasonic
C_OUT1, C_OUT2: ECJ3YB1C106M, Panasonic
C1: ECJ2FB1C225K, Panasonic
D1, D2, D3: MBR0540T1, ON Semiconductor
C_OUT1
10 mF
16 V
V_OUT
30 V
2.0 mA at V_IN = 2.0 V
35 mA at V_IN = 5.5 V
C_OUT2
10 mF
16 V
ǒ Ǔ VOUT + 1.19
R1
R2
)
1
Figure 53. Step−Up DC−DC Converter with 30 V Output Voltage
V_IN
3.3 V to 5.0 V
C_IN
10 mF
6.3 V
C4
750 pF to
2000 pF
D3
D4
C3
L 8.2 mH
2.2 mF/50 V
D2
C2
3.3 mF
50 V
V_OUT
−28 V
9.0 mA at V_IN = 3.3 V
20 mA at V_IN = 5.0 V
CE
1
R₁
FB
2
R₂
VDD
3
Q1
LX
D1
5
C1
1 mF
50 V
GND
4
ǒ Ǔ VOUT [ * 1.19
R1
R2
)
1
)1
L: CR43−8R2MC, Sumida
C_IN: 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