KA2535A Ver la hoja de datos (PDF) - Fairchild Semiconductor

Número de pieza

componentes Descripción

Fabricante

KA2535A

Voltage-mode PWM controller / DIP 16 Pin

Fairchild Semiconductor 

KA3525A

SMPS Controller

www.fairchildsemi.com

Features

• 5V ±1% Reference

• Oscillator Sync Terminal

• Internal Soft Start

• Deadtime Control

• Under Voltage Lockout

Description

The KA3525A is a monolithic integrated circuit that

includes all of the control circuits necessary for a pulse width

modulating regulator. There are a voltage reference, an error

amplifier, a pulse width modulator, an oscillator, an under

voltage lockout, a soft start circuit, and the output driver in

the chip.

16-DIP

1

Internal Block Diagram

VREF 16

VCC 15

GND 12

BAND GAP

REF 5V

U.V.L.O.

EA(-) 1

EA(+) 2

EAOUT 9

_

ERR

AMP

+

C

8

(SOFT

START)

5K

10

SHUT DOWN

CT 5

7

5K

DISCHARGE

_

PWM

COMP

+

LATCH

SR

OSCILLATOR

F/F

Q

Q

36

SYNC RT

4

OSC

OUTPUT

VC

13

11

OUTPUT A

14

OUTPUT B

©2002 Fairchild Semiconductor Corporation

Rev. 1.0.1

Share Link: