MB3782PF FUJITSU [Fujitsu Component Limited.], MB3782PF Datasheet - Page 9

• Manufacturer Part Number: MB3782PF
• Description: ASSP Power Supplies BIPOLAR Switching Regulator Controller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

USING THE R
The triangular waves, as shown in Figure 5, act to set the oscillator frequency by charging and discharging the
capacitor connected to the C
In addition, when voltage level V
the external circuit connections to adjust for the fact that I
external circuits in determining the oscillator frequency (see Figure 6).
T
PIN
Figure 5 No V
To external circuits
Figure 6
T
pin using the current value of the resistor connected to the R
REF
V
V
REF
REF
/2 is output to external circuits from the R
REF
2
Triangular wave oscillator
/2 connection to external circuits from R
/2 connection to external circuits from R
2
R
V
I
RT
T
REF
2
Triangular wave generator
I
RT
2
R
1
I
T
RT
I
1
C
T
I
CT
1
1
is increased by the value of the current I
C
T
I
CT
I
CT
= V
= I
RT
2R
REF
T
T
I
pin, care must be taken in making
CT
= I
= I
=
T
RT
1
T
V
2R
pin
+ I
REF
pin
T
2
+ I
2
T
pin.
MB3782
2
to the
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