Rainbow Electronics MAX742 - Manual (Page 9)

MAX742
Switch-Mode Regulator with
+5V to ±12V or ±15V Dual Output
_______________________________________________________________________________________ 9
MAX742
Q2
Q1
CSH+
VIN
4.5V to 6V*
CSL+
1
J1
C2
6.8nF
+VO
D1
1N5820
L1
25 µ H
R2
0.02 Ω
C8
1000 µ F
C6
D4
1N914
D3
1N914
C9
1000
µ F
GND
EXT+
PUMP
PDRV
EXT-
V+
CSH-
CSL-
C7
1
µ F
C14
0.1 µ F
DISC CERAMIC
C1
0.1
µ F
NOTES:
Q1 = Motorola MTP25N06L
Q2 = International Rectifier IRF9Z30
L1, L2 = Gowanda 121AT2502VC
R2, R3 = KRL LB4-1 ±3%
C8–C13 = Nichicon PL Series (25V or 35V)
R3
0.02
Ω
C10
1000 µ F
10V
C3
10 µ F
R1
100 Ω
C4
2.2 µ F
C5
6.8nF
L2
25 µ H
-VO
D2
1N5820
C11
1000 µ F
C12
1000 µ F
1 µ F
FB+
CC+
AGND
AV+
100/200
12/15
VREF
* FOR HIGHER INPUT VOLTAGE, SEE
SUPPLY-VOLTAGE RANGE SECTION.
SS
CC-
FB-
C13
330 µ F
Figure 3. High-Power 22W Application Circuit