nx2142 Microsemi Corporation, nx2142 Datasheet - Page 6

• Manufacturer Part Number: nx2142
• Description: Single Channel Pwm Controller With Feedforward And 5v Bias Regulator
• Manufacturer: Microsemi Corporation

TYPICAL APPLICATION CIRCUIT
Rev. 1.1
10/28/07
GNDBUS
BUS
C10
47u
BUS(8-20V)
Figure 3- Demo board schematic(VIN=8-20V,VOUT=5V,IOUT=3A)
2N3904
Q1
EN_REGOUT
6
U1
EN/REG_OUT
C6
0.1u
HDRV
COMP
LDRV
BST
SW
FB
C2
1u
1
2
10
4
8
9
BST
COMP
FB
BAT54A
C1
0.1u
D1
R7
10k
C3
3.3n
U_HDRV
U_SW
U_LDRV
C4
52p
R10
953
HDRV
LDRV
4
2
C5
25n
R9
4.99k
25TQC33M
R8
1.2k
Ci1
C14
1u
M5A
STM6912
M6B
STM6912
SW
NX2142/2142A
1
R15
10
C9
470p
DO3316P-682
Lo
2
1000uF, 6.3v,30mohm
Co1
OUT(5V)
GNDOUT
VOUT
6