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S1F71100 Series
S1F70000 Series EPSON 4–35
Technical Manual
S1F71100
Series
PIN ASSIGNMENTS
S
SCAP
POFFX
V
DD
I
SENSE
V
SS
V
O
ERCAP
SWO
Index
1
2
3
4
8
7
6
5
PIN DESCRIPTIONS
Pin No. Pin name
Pin Type
Description
1S
SCAP — The soft start function is obtained when a capacitor is connected
between the capacitor connection pin for setting soft start and the V
SS
pin.
2 POFFX — Power off control pin
During normal operation : V
DD level
At power off time : VSS level
3V
DD Power Power supply pin (+)
supply
4I
SENSE — Load current feedback pin
Load current detection resistor connection pin
(Connect a resistor of 100mΩ)
5 SWO Output Switching Pch power MOS transistor drive pin
6 ERCAP – Capacitor connection pin for external phase compensation
7VO Input Output voltage feedback pin
8V
SS Power Power supply pin (–)
supply
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SOP4-8pin