S1F75510 Epson Electronics America, Inc., S1F75510 Datasheet - Page 9

• Manufacturer Part Number: S1F75510
• Description: Charge-pump Dc/dc Converter & Voltage Regulator
• Manufacturer: Epson Electronics America, Inc.

Rev. 1.1
CR oscillation circuit
Indicated below is the potential correlation diagram inside the system as is shown in Fig. 2.
The S1F75510 incorporates a CR oscillation circuit as the oscillation circuit for the boosting clock signals. This
circuit is to be used connecting the external oscillation resistor ROSC between the OSC1 pin and the OSC2 pin.
The CR oscillation circuit will stop operation under the blank mode and when using the external clock (MODE =
V
be interrupted by setting the OSC1 pin to the V
state.
In this document, the electrical characteristics are referred to as the external oscillation resistance value,
ROSC=1M .
SS
level and OSCSEL = V
V
V
DD
SS
positive direction
2 boosting in the
Power Supply IC (S1F75510)
SS
level) or under the shut down state (POFFX = V
Voltage stabilizing
Fig. 3 Potential correlation diagram inside the system
positive direction
3 boosting in the
negative direction
3 boosting in the
SS
level and, at the same time, setting the OSC2 pin into open
V
V
V
V
OUT3
OUT1
OUT2
OUT4
Source driver
SS
level). Also, the oscillation will
Gate driver
S1F75510
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