S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 186
S1F78100Y2A
Manufacturer Part Number
S1F78100Y2A
Description
High Precision Voltage Regulators
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1F78100Y2A.pdf
(258 pages)
- Current page: 186 of 258
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S1F71200 Series PWM Type Step-up/down DC/DC
Switching Regulator
DESCRIPTION
S1F71200 is a step-up/step-down DC/DC converter
control IC for which the CMOS process is used and to
which a power transistor is connected outside.
S1F71200 is composed of an oscillator, a reference
voltage circuit, an error amplifier, a PWM circuit, a se-
ries regulator, a driver, etc. When this IC drives an ex-
ternal power transistor, S1F71200 can constitute a step-
up/step-down DC/DC converter that operates as a [step-
down] series regulator when the input voltage is High
and that operates as a [step-up] switching regulator of
pulse width modulation system (PWM) when the input
voltage is Low.
S1F71200 is also provided with an overcurrent protec-
tion circuit and a soft start circuit. When receiving ex-
ternal signals, S1F71200 can stop the oscillator and the
switching circuit and turn off the power, so that it can
reduce wasteful current consumption at the time of sys-
tem halt.
S1F70000 Series
Technical Manual
EPSON
FEATURES
• Input voltage
• Output voltage
• Power off current
• Self current consumption : 150 A
• Frequency fixing (200kHz) PWM at step-up time
• Power off function (IC shutdown)
• Soft start function
• Overcurrent protection function
• Shipping pattern
* Radiation-resistant design has not been provided for
this specification.
: 2.5V to 12.0V
: 5.0V (S1F71200M0A0)
: 1.0 A
: plastic package
3.3V (S1F71200M0B0)
(step-up portion)
15 A
(step-down portion)
(SSOP2-16 pin)
S1F71200 Series
4–41
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