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HA16129AFPJ Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers

Part # HA16129AFPJ
Description  Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp.
PDF  26 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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HA16129AFPJ Datasheet(HTML) 10 Page - List of Unclassifed Manufacturers

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HA16129AFPJ
8
Calculation Formulas
Item
Formula
Notes
Reference
voltage
Vout = 1.225 1 +
R1, R2; k
Ω
37 // R1
12 // R2
(
(
While the Vout voltage will be 5 V
±1.5% when the
Voadj pin is open, the circuit shown here should be
used to change the Vout voltage externally.
Voadj
VCC
CS
Vout
R2
R1
Short
detection
voltage
V
CS (700 mV Typ) < IL ⋅ RCS
When this function operates, the base current to the
external transistor connected to the CS pin stops and
the Vout output is lowered.
VCC
CS
Vout
RCS
IL
OVP
—
This function prevents the microprocessor from being
damaged if the Vout voltage is inadvertently increased
to too high a level. The OVP detection voltage is fixed.
t
RH, tRL
t
RH
t
RL
= 3.3
× C
R ⋅ RR
= 1.1
× C
R ⋅ RR
These determine the reset pulse frequency and duty.
RES
tRH
tRL
t
ON
t
ON = 1.1 × CR ⋅ RT
Sets the time from the rise of the
NMI signal to the point
the
RES output is cleared.
NMI
tON
RES
t
OFF
t
OFF = 6.5 × CR ⋅ RR
Sets the time from the point the P-RUN pulse stops to
the point a reset pulse is output.
RES
toff
P-RUN



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