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L6567 Datasheet(PDF) 1 Page - STMicroelectronics

No. de pieza L6567
Descripción Electrónicos  HIGH VOLTAGE DRIVER FOR CFL
Download  15 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6567 Datasheet(HTML) 1 Page - STMicroelectronics

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L6567
January 2000
This is preliminary information on a new product now in development. Details are subject to change without notice.
n
BCD-OFF LINE TECHNOLOGY
n
FLOATING SUPPLY VOLTAGE UP TO 570V
n
GND REFERRED SUPPLY VOLTAGE UP TO
18V
n
UNDER VOLTAGE LOCK OUT
n
CLAMPING ON Vs
n
DRIVER CURRENT CAPABILITY:
30mA SOURCE
70mA SINK
n
PREHEAT AND FREQUENCY SHIFT TIMING
DESCRIPTION
The device is a monolithic high voltage integrated cir-
cuit designed to drive CFL and small TL lamps with a
minimum part count.
It provides all the necessary functions for proper pre-
heat, ignition and steady state operation of the lamp:
variable frequency oscillator;
settable preheating and ignition time;
capacitive mode protection;
lamp power independent from mains voltage variation.
Besides the control functions, the IC provides the lev-
el shift and drive function for two external power MOS
FETs in a half-bridge topology.
SO14
DIP14
ORDERING NUMBERS:
L6567D
L6567
HIGH VOLTAGE DRIVER FOR CFL
BLOCK DIAGRAM
L
FEED FORWARD
VCO +
FREQ. SHIFTING
VOLTAGE
REFERENCE
BIAS
CURRENT
GENERATOR
C
S
C
f
C
i
CI
CF
V
S
to
comp.
14
12
5
13
PREHEATING
TIMING
LOGIC
RHV
Rhv
Vhv
Cp/Cav
C
10
11
8
CP
LEVEL
SHIFTING
HIGH
SIDE
DRIVER
VS
F
S
G1
S1
1
2
3
LOW
SIDE
DRIVER
T1
6
7
9
Vhv
Chv
Chv
MAINS
T2
Rshunt
G2
PGND
RS
RREF
Ref
D96IN441B
Lamp
CL
SGND
MULTIPOWER BCD TECHNOLOGY


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