AN8031 データシートの表示（PDF） - Panasonic Corporation

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AN8031

Active filter control IC

Panasonic Corporation 

Voltage Regulators

AN8031

s Terminal Equivalent Circuits (continued)

Pin No.

Equivalent circuit

Description

I/O

6

PVCC Approx. 7.1 V Approx. 7.1 V VB:

I

The terminal is connected via the transformer's

Upper limit

voltage clamp

sub-coil and resistor. The reset of transformer is

detected and the trigger signal to turn on the power

MOSFET is sent.

6

Lower limit

VB

Comparator

Since the coil signal of transformer is input as

current, the IC incorporates the circuit which

voltage clamp

input

clamps the upper/lower limit voltage to prevent

malfunction.

7

7

GND:



Grounding terminal

This terminal is used in common for grounding

the control system and the power system.

8

9

VOUT:

O

The output terminal.

It is capable of driving the gate of power MOSFET

directly.

8

9

9

PVCC:



The supply voltage terminal for power.

VB

upper limit

voltage clamp

Power

MOSFET

drive block

It determines the upper limit of output drive volt-

age. Normally, it is used at the same potential of

SVCC .

5

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