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L6668 Fiches technique(PDF) 1 Page - STMicroelectronics |
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L6668 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 23 page 1/23 L6668 May 2005 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 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 ■ SO16 PACKAGE ECOPACK ® 1.1 APPLICATIONS ■ HI-END AC-DC ADAPTERS/CHARGERS FOR NOTEBOOKS. ■ LCD/CRT MONITORS, LCD/CRT TV ■ DIGITAL CONSUMER Figure 2. Block Diagram 16 Vref + - 1.5V 12 BLANKING R SQ 25V Vcc_OK DIS 0.8V 4R 11R DIS 11 10 3 4 8 5 15 15V CLK COMP SS ISEN RCT S-COMP VCC VREF GND OUT HICCUP 13 SLOPE COMP. VREG VREG 0.4mA TIMING PWM + - 1 HV ST-BY HV generator ON/OFF and UVLO management Vcc_OK 14 PFC_STOP 2.2/2.7V - + OCP DIS OCP - + 9 SKIPADJ SOFT-START HYST. CTRL SQ R SQ R STANDBY 2.2V 7 DIS - + 6 N.C. 16 Vref + - 1.5V 12 BLANKING R SQ 25V Vcc_OK DIS 0.8V 4R 11R DIS 11 10 3 4 8 5 15 15V CLK COMP SS ISEN RCT S-COMP VCC VREF GND OUT HICCUP 13 SLOPE COMP. VREG VREG 0.4mA TIMING PWM + - 1 HV ST-BY HV generator ON/OFF and UVLO management Vcc_OK 14 PFC_STOP 2.2/2.7V - + OCP DIS OCP - + 9 SKIPADJ SOFT-START HYST. CTRL SQ R SQ R STANDBY 2.2V 7 DIS - + 6 N.C. PRELIMINARY DATA SMART PRIMARY CONTROLLER Rev. 1 Figure 1. Package Table 1. Order Codes Part Number Package L6668 SO-16 L6668TR SO-16 in Tape & Reel SO-16 (Narrow) |
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Description similaire - L6668 |
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