SMART PRIMARY CONTROLLER
L6668
SMART PRIMARY CONTROLLER
1
■ ■
General Features
Figure 1. Package
MULTIPOWER BCD TECHNOLOGY LOAD-DEPENDENT CURR...
Description
L6668
SMART PRIMARY CONTROLLER
1
■ ■
General Features
Figure 1. Package
MULTIPOWER BCD TECHNOLOGY LOAD-DEPENDENT CURRENT-MODE CONTROL: FIXED-FREQUENCY (HEAVY LOAD), FREQUENCY FOLDBACK (LIGHT LOAD), BURST-MODE (NO-LOAD) ■ ON-BOARD HIGH-VOLTAGE START-UP www.DataSheet4U.com ■ 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 FUNCTION ■ PROGRAMMABLE SOFT-START ■ 2% PRECISION REFERENCE VOLTAGE EXTERNALLY 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
S-COMP 15 1 HV
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
V CC 5
SLOPE COMP.
16 RCT CLK
25V 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
January 2006
Rev. 4 1/23
L6668
2
Description
L6668 is a current-mode primary controller IC, designed to build single-ended converters. The IC drives th...
Similar Datasheet