AN8014 データシートの表示（PDF） - Panasonic Corporation

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AN8014

Step-down, step-up, or inverting DC-DC converter control IC

Panasonic Corporation 

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

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