nx2114 Microsemi Corporation, nx2114 Datasheet - Page 17

• Manufacturer Part Number: nx2114
• Description: 300khz & 600khz Synchronous Pwm Controller
• Manufacturer: Microsemi Corporation

Rev. 4.0
06/20/06
TYPICAL APPLICATION
Single Supply 5V Input
+5V
Vin
4.7pF
C1
+5V
Vin
Figure 17 - Application of NX2114 for 5V input and 2.5V output with electrolytic capacitors
150pF
Figure 18 - Application of NX2114 A for 5V input and 1.2V output with ceramic output capacitors
C1
20
k 1%
22uF
C4
33uF C3
R2
C3
4.7
33uF
22uF
C4
k 1%
R2
120
C2
330pF
R4
8.2nF
C2
R4
k
7k
7
6
7
6
Comp
Fb
1uF
C6
1uF
C6
Comp
Fb
Vcc
5
Vcc
787
5
R3
R3
10
R1 10
Gnd
3
10
R3
R1
Gnd
3
10
BST
1
k 1%
820pF
BST
C3
1
k 1%
Hdrv
Ldrv
SW
Hdrv
Ldrv
SW
D1 MBR0530T1
4
2
8
2
8
4
L2 1uH
L2 1uH
D1
MBR0530T1
0.1uF
C7
0.1uF
C7
M1
M2
M1
M2
C5
1uF
C5
L1 1.5uH
1uF
L1 3.3uH
2 x (470uF,60mohm)
Cin
NX2114/2114A
3 x 22uF
Cin
X7R
Co
4 x (330uF,80mohm)
Co
10 x 22uF
X7R
Vout
Vout
+1.2V,4A
+2.5V,10A
17