ML4827

PRODUCT SPECIFICATION

2

REV. 1.0.1 6/27/01

Pin Configuration

Pin Description

Absolute Maximum Ratings

Absolute Maximum Ratings are those values, beyond which the device could be permanently damaged. Absolute maximum

ratings are stress ratings only and functional device operation is not implied.

PIN

NAME

FUNCTION

1

IEAO

PFC transconductance current error amplifier output

PFC gain control reference input

Current sense input to the PFC current limit comparator

Input for PFC RMS line voltage compensation

5

SS

Connection point for the PWM soft start capacitor

PWM voltage feedback input

7

RAMP 1

8

RAMP 2

When in current mode, this pin functions as as the current sense input; when in

voltage mode, it is the PWM (slave) oscillator input.

9

PWM current limit comparator input

10

GND

Ground

11

PWM OUT

PWM driver output

12

PFC OUT

PFC driver output

13

Positive supply (connected to an internal shunt regulator)

14

Buffered output for the internal 7.5V reference

15

PFC transconductance voltage error amplifier input, and TriFault Detect input

16

VEAO

PFC transconductance voltage error amplifier output

Parameter

Min.

Max.

Units

55

mA

–35

V

Voltage on any other Pin

GND-0.3

V

20

mA

10

mA

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO

IAC

ISENSE

VRMS

SS

VDC

RAMP 1

RAMP 2

VEAO

VFB

VREF

VCC

PFC OUT

PWM OUT

GND

DC ILIMIT

TOP VIEW

ML4827

16-Pin PDIP (P16)

16-Pin Wide SOIC (S16W)