Voltage regulators
s Terminal Equivalent Circuits
Pin No. I / O
Equivalent circuit
1
O
VCC
AN8014S
Description
VREF:
Outputs the reference voltage
2.6 V (allowance: 3%)
Incorporating short-circuit protection
against ground.
2
VREF
VREF
1
RT:
Connection for the timing resistor which
decides the oscillator frequency. Use a re-
sistor in the range 5.1 kΩ to 30 kΩ. The
pin voltage is approx. 0.4 V.
DTC S.C.P.
100 Ω
2 RT(≈ 0.4 V)
3
VREF
To PWM input
OSC
comp.
CT:
Connection for the timing capacitor which
IO decides the oscillator frequency. Use a ca-
pacitor in the range 100 pF to 10 000 pF.
CT For the oscillator frequency setting, refer
3 to the "Application Notes, [1] Function
descriptions" section. Use an oscillator fre-
2IO quency in the range 5 kHz to 500 kHz.
4
VREF
2
RT
PWM comparator
input
DTC 4 IDTC
CDTC
RDTC
DTC:
Connection for a resistor and a capacitor
that set the dead-time and soft start period
of PWM output.
Input current IDTC is decided by the timing
resistor RT which controls sample to sample
variations and temperature variations.
It is approx. −13.2 µA when RT = 15 kΩ.
IDTC
=
VRT
RT
×
1
2
[A]
5