Rainbow Electronics MAX799 - Manual (Page 25)

MAX796/MAX797/MAX799
Step-Down Controllers with
Synchronous Rectifier for CPU Power
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MAX796
MAX797
MAX799
SENSE RESISTOR
MAIN CURRENT PATH
FAT, HIGH-CURRENT TRACES
Figure 10. Kelvin Connections for the Current-Sense Resistor
MAX796
CSL
CSH
FB
GND
REF SYNC
SECFB VL 10
2 11 7
3 5
14
Si9410
Si9410
D2
EC11FS1
T1 = TRANSPOWER TTI5870
* = OPTIONAL, MAY NOT BE NEEDED
16
15
13
D1
CMPSH
-3A
1N5819
12
8
9
V IN (6.5V TO 18V)
+15V
AT
250mA
+5V
AT 3A
BST
V+
DH
LX
DL
6
ON/OFF
1
PGND
SHDN
SS
0.33 µ F
C2
4.7
µ F
C3
15
µ F
2.5V
220 µ F
6.3V
0.1 µ F
22 µ F, 35V
0.01 µ F
20m Ω
22 Ω *
4700pF*
T1
15 µ H
2.2:1
49.9k, 1%
210k, 1%
0.01 µ F
(OPTIONAL)
18V
1/4 W
C2
4.7 µ F
4
Figure 11. +5V/+15V Dual-Output Application (MAX796)
_________________________________________________________Application Circuits