L6561 查看數據表（PDF） - STMicroelectronics
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L6561 Datasheet PDF : 13 Pages
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L6561
POWER FACTOR CORRECTOR
1 FEATURES
■ VERY PRECISE ADJUSTABLE OUTPUT
OVERVOLTAGE PROTECTION
■ MICRO POWER START-UP CURRENT (50µA
TYP.)
■ VERY LOW OPERATING SUPPLY
CURRENT(4mA TYP.)
■ INTERNAL START-UP TIMER
■ CURRENT SENSE FILTER ON CHIP
■ DISABLE FUNCTION
■ 1% PRECISION (@ Tj = 25°C) INTERNAL
REFERENCE VOLTAGE
■ TRANSITION MODE OPERATION
■ TOTEM POLE OUTPUT CURRENT: ±400mA
■ DIP-8/SO-8 PACKAGES
2 DESCRIPTION
L6561 is the improved version of the L6560 stan-
dard Power Factor Corrector. Fully compatible
with the standard version, it has a superior perfor-
mant multiplier making the device capable of work-
ing in wide input voltage range applications (from
85V to 265V) with an excellent THD. Furthermore
the start up current has been reduced at few tens
of mA and a disable function has been implement-
ed on the ZCD pin, guaranteeing lower current
consumption in stand by mode.
Figure 1. Packages
DIP-8
Table 1. Order Codes
Part Number
L6561
L6561D
L6561D013TR
SO-8
Package
DIP-8
SO-8
Tape & Reel
Realised in mixed BCD technology, the chip gives
the following benefits:
– micro power start up current
– 1% precision internal reference voltage
– (Tj = 25°C)
– Soft Output Over Voltage Protection
– no need for external low pass filter on the cur-
rent sense
– very low operating quiescent current minimis-
es power dissipation
The totem pole output stage is capable of driving
a Power MOS or IGBT with source and sink cur-
rents of ±400mA. The device is operating in tran-
sition mode and it is optimised for Electronic Lamp
Ballast application, AC-DC adaptors and SMPS.
Figure 2. Block Diagram
1
INV
-
2.5V
+
COMP
2
MULT
3
MULTIPLIER
CS
4
40K
VOLTAGE
REGULATOR
OVER-VOLTAGE
DETECTION
-+
5pF
8
VCC
20V
R2
INTERNAL
SUPPLY 7V
R1
+
-
VREF2
2.1V
1.6V
UVLO
RQ
S
DRIVER
ZERO CURRENT
+ DETECTOR
-
STARTER
VCC
7
GD
June 2004
6
GND
5
ZCD
DISABLE
D97IN547E
REV. 16
1/13
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