SC1405D
POWER MANAGEMENT
Application Circuit - TSSOP-14
INPUT POWER
+
+
+
+5V
D1
MTB75N03
75A,30V
<<
>>
10uF,6.3V
P_READY
PWM IN
(20KHz-1MHz)
+
.1uF
47pF
8
3
7
2
4
6
1
5
1N5819
Vcc BST
GND
TG
PRDY
EN DRN
CO
DELAY _C BG
OVP_S
DSPS_DR
S_MOD PGND
14
13
12
9
11
10
.22uF
2.2
2.2
MTB75N03
75A,30V
+
+
+
<<
DSPS_DR
SC1405D
Ov er-Voltage Sense
<<< Output Feedback to PWM
Controller
Timing Diagram
? 2005 Semtech Corp.
5
www.semtech.com
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