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RT9229
www.richtek-ic.com.tw
DS9229-03 July 2001
8
Typical Application Circuit
L1
1
µH
L3
2.9
µH
C8
1000pF
1.21k
R2
+
SS
FB1
VSEN1
PGND
LGATE1
PHASE1
UGATE1
PGOOD
OCSET1
VCC
OCSET2
GATE3
FB3
VOUT4
FB4
OCSET1
GND
17
12
6
7
21
22
24
25
26
27
8
23
28
18
19
16
14
POWERGOOD
C5-6
2x1
µF
R12
10
C7
1
µF
C1-4
4x1000
µF
Q4
HUF75307D3S
C23
1000
µF
C24
270
µF
VOUT3
GTL = 1.5V
VOUT4
2.5V
GND
5V
12V
C25
0.039
µF
R7
732K
C17
0.68
µF
Q1
HUF76139S2S
Q2
HUF76139S2S
R4
4.99K
C10-16
7x1000
µF
R13
4.99K
VOUT1
1.3 to 3.5V
RT9229
F1
30A
R10
1K
R8
187
R11
1K
R9
1K
VID0
VID1
VID2
VID3
VID4
5
4
3
FAULT
13
L2
5.2
µH
+
C9
1000pF
1.21k
R1
Q3
HUF76137S3S
9
1
UGATE2
PHASE2
2
D1
MBR2535CTL
15 VSEN2
R3
4.99K
R5
3.32K
R6
5.11K
C22
0.68
µF
FB2
10
VOUT2
3.3V
C18-21
4x1000
µF
+
+
+