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S1F71100 Series
S1F70000 Series EPSON 4–37
Technical Manual
S1F71100
Series
Power Off Function
S1F71100 can control circuit operations according to
external signal control. When the POFFX pin is con-
nected to the V
SS level, all circuits stop their operations
and their powers are turned off. The current consump-
tion at the power off state is less than 1µA. When the
power is off, the SWO pin is at the V
DD level and turns
off the voltage transistor. The voltage at the SSCAP pin
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Applicable Pin Rated Value Unit
Input voltage VDD VDD 15.0 V
Voltage at VO pin VO VO VSS–0.3 to VDD+0.3 V
Voltage at POFFX pin POFFX POFFX VSS–0.3 to VDD+0.3 V
Voltage at ERCAP pin ERCAP ERCAP VSS–0.3 to VDD+0.3 V
Voltage at SSCAP pin SSCAP SSCAP VSS–0.3 to VDD+0.3 V
Voltage at SWO pin SWO SWO VSS–0.3 to VDD+0.3 V
Voltage at ISENSE pin ISENSE ISENSE VSS–0.3 to VDD+0.3 V
Package allowable loss P
D PD 300 MW
Ta≤25˚C
Operating temperature Topr – –30 to +85 ˚C
Storage temperature Tstg – –55 to +150 ˚C
Soldering temperature and time Tsol – 260 · 10 ˚C·S
Note :Any operation under conditions exceeding the above absolute maximum ratings may result in a malfunc-
tion or a permanent destruction. When even an item is more than the rating, a temporary normal operation
is possible but with remarkably low reliability. So, be sure to keep all items below the ratings.
comes to the VSS level, and the output voltage is con-
trolled with the soft start circuit after the power off state
is released. In the operating state, set the POFFX pin to
the V
DD level to operate it. The POFFX pin cannot be
operated in a open state. When the power off function is
not used, connect the POFFX pin to the V
DD pin.