ML4802 Ver la hoja de datos (PDF) - Fairchild Semiconductor

Número de pieza

componentes Descripción

Fabricante

ML4802

PFC/PWM Controller Combo with Green Mode

Fairchild Semiconductor 

ML4802

PIN CONFIGURATION

ML4802

16-Pin PDIP (P16)

16-Pin Narrow SOIC (S16N)

IEAO

IAC

ISENSE

VRMS

SS

VDC

RT/CT

RAMP 1

1

16 VEAO

2

15 VFB

3

14 VREF

4

13 VCC

5

12 PFC OUT

6

11 PWM OUT

7

10 GND

8

9 RAMP 2

TOP VIEW

PIN DESCRIPTION

PIN NAME

FUNCTION

1 IEAO

PFC current error amplifier output

2 IAC

PFC gain control reference input

3 ISENSE

Current sense input to the PFC current

limit comparator

4 VRMS

Input for PFC RMS line voltage

compensation

5 SS

Connection point for the PWM soft start

capacitor

6 VDC

PWM feedback voltage input

7 RT/CT

Connection for master (PWM) oscillator

frequency setting components

8 RAMP 1 PFC ramp input

PIN NAME

FUNCTION

9 RAMP 2

PWM current feedback/overcurrent

limit input

10 GND

Ground

11 PWM OUT PWM driver output

12 PFC OUT PFC driver output

13 VCC

Positive supply input

14 VREF

Buffered output for the internal 7.5V

reference

15 VFB

PFC voltage error amplifier input

16 VEAO

PFC voltage error amplifier output

2

REV. 1.0.1 12/12/2000

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