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L6668 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce L6668
Description  SMART PRIMARY CONTROLLER
Download  23 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6668 Fiches technique(HTML) 1 Page - STMicroelectronics

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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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