L6668 Просмотр технического описания (PDF) - STMicroelectronics

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L6668

SMART PRIMARY CONTROLLER

STMicroelectronics 

L6668

SMART PRIMARY CONTROLLER

1 General Features

■ MULTIPOWER BCD TECHNOLOGY

■ LOAD-DEPENDENT CURRENT-MODE CON-

TROL: FIXED-FREQUENCY (HEAVY LOAD),

FREQUENCY FOLDBACK (LIGHT LOAD),

BURST-MODE (NO-LOAD)

■ ON-BOARD HIGH-VOLTAGE START-UP

■ IMPROVED STANDBY FUNCTION

■ LOW QUIESCENT CURRENT (< 2 mA)

■ SLOPE COMPENSATION

■ PULSE-BY-PULSE & HICCUP-MODE OCP

■ INTERFACE WITH PFC CONTROLLER

■ DISABLE FUNCTION (ON/OFF CONTROL)

■ LATCHED DISABLE FOR OVP/OTP FUNC-

TION

■ PROGRAMMABLE SOFT-START

■ 2% PRECISION REFERENCE VOLTAGE EX-

TERNALLY AVAILABLE

■ ±800 mA TOTEM POLE GATE DRIVER WITH

INTERNAL CLAMP AND UVLO PULL-DOWN

■ BLUE ANGEL, ENERGY STAR, EU CODE OF

CONDUCT COMPLIANT

Figure 2. Block Diagram

Figure 1. Package

SO-16 (Narrow)

Table 1. Order Codes

Part Number

L6668

L6668TR

Package

SO-16

SO-16 in Tape & Reel

■ SO16 PACKAGE ECOPACK®

1.1 APPLICATIONS

■ HI-END AC-DC ADAPTERS/CHARGERS FOR

NOTEBOOKS.

■ LCD/CRT MONITORS, LCD/CRT TV

■ DIGITAL CONSUMER

16

RCT

S-COMP

HV

15

1

SLOPE

COMP.

CLK

TIMING

VCC

5

25V

HV generator ON/OFF

and UVLO management

VREG

Vref

DIS

N.C.

+

7

-

2.2V

6

ISEN

12

HICCUP

+

-

1.5V

PFC_STOP

14

R

SQ

Vcc_OK

DIS

BLANKING

SQ

R

SQ

+

PWM

-

OCP

-

R

Vcc_OK

DIS

HYST. CTRL

VREG

+

0.4mA

-

+

DIS

2.2/2.7V

OCP

0.8V

9

11R

4R

SOFT-START

11

10

15V

STANDBY

8

VREF

4

OUT

3

GND

13

ST-BY

SKIPADJ

SS

COMP

January 2006

Rev. 4

1/23

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