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L6668

SMART PRIMARY CONTROLLER

PRELIMINARY DATA

1

鈻?/div>

General Features

Figure 1. Package

MULTIPOWER BCD TECHNOLOGY

鈻?/div>

LOAD-DEPENDENT CURRENT-MODE CON-

TROL: FIXED-FREQUENCY (HEAVY LOAD),

FREQUENCY FOLDBACK (LIGHT LOAD),

BURST-MODE (NO-LOAD)

鈻?/div>

ON-BOARD HIGH-VOLTAGE START-UP

鈻?/div>

IMPROVED STANDBY FUNCTION

鈻?/div>

LOW QUIESCENT CURRENT (< 2 mA)

鈻?/div>

SLOPE COMPENSATION

鈻?/div>

PULSE-BY-PULSE & HICCUP-MODE OCP

鈻?/div>

INTERFACE WITH PFC CONTROLLER

鈻?/div>

DISABLE FUNCTION (ON/OFF CONTROL)

鈻?/div>

LATCHED DISABLE FOR OVP/OTP FUNC-

TION

鈻?/div>

PROGRAMMABLE SOFT-START

鈻?/div>

2% PRECISION REFERENCE VOLTAGE EX-

TERNALLY AVAILABLE

鈻?/div>

鹵800 mA TOTEM POLE GATE DRIVER WITH

INTERNAL CLAMP AND UVLO PULL-DOWN

鈻?/div>

BLUE ANGEL, ENERGY STAR, EU CODE OF

CONDUCT COMPLIANT

Figure 2. Block Diagram

S-COMP

15

1

HV

SO-16 (Narrow)

Table 1. Order Codes

Part Number

L6668

L6668TR

鈻?/div>

Package

SO-16

SO-16 in Tape & Reel

SO16 PACKAGE ECOPACK

廬

1.1 APPLICATIONS

鈻?/div>

HI-END AC-DC ADAPTERS/CHARGERS FOR

NOTEBOOKS.

LCD/CRT MONITORS, LCD/CRT TV

DIGITAL CONSUMER

V

CC

5

SLOPE

COMP.

16

RCT

25V

CLK

HV generator ON/OFF

and UVLO management

Vcc_OK

VREG

Vref

8

VREF

TIMING

DIS

+

7

-

2.2V

R

S

Q

DIS

15V

4

OUT

BLANKING

+

PWM

-

OCP

Q

-

+

-

S

R

Q

N.C.

6

12

ISEN

1.5V

HICCUP

+

-

R

S

Vcc_OK

DIS

VREG

3

GND

HYST. CTRL

0.4mA

13

STANDBY

ST-BY

PFC_STOP

14

DIS

OCP

+

2.2/2.7V

0.8V

9

SKIPADJ

SS

4R

11R

SOFT-START

11

10

COMP

May 2005

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

Rev. 1

1/23

制造商
STMicroelectronics
產(chǎn)品種類(lèi)
開(kāi)關(guān)變換器、穩(wěn)壓器與控制器
封裝
Reel
工廠包裝數(shù)量
2500

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