深圳市广辉电子有限公司

供应PFC(功率因数校正芯片)L6561,L6561D

n VERY PRECISE ADJUSTABLE OUTPUT
OVERVOLTAGE PROTECTION
n MICRO POWER START-UP CURRENT (50mA
TYP.)
n VERY LOW OPERATING SUPPLY
CURRENT(4mA TYP.)
n INTERNAL START-UP TIMER
n CURRENT SENSE FILTER ON CHIP
n DISABLE FUNCTION
n 1% PRECISION (@ Tj = 25°C) INTERNAL
REFERENCE VOLTAGE
n TRANSITION MODE OPERATION
n TOTEM POLE OUTPUT CURRENT: ±400mA
n DIP8/SO8 PACKAGES
DESCRIPTION
L6561 is the improved version of the L6560 standard
Power Factor Corrector. Fully compatible
with the standard version, it has a superior performant
multiplier making the device capable of working
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 implemented
on the ZCD pin, guaranteeing lower current
consumption in stand by mode.
Realised in mixed BCD technology, the chip gives
the following benefits:
– micro power start up curren
– 1% precision internal reference voltage (Tj
= 25°C)
– Soft Output Over Voltage Protection
– no need for external low pass filter on the
current sense
– very low operating quiescent current minimises
power dissipation
The totem pole output stage is capable of driving
a Power MOS or IGBT with source and sink currents
of ±400mA. The device is operating in transition
mode and it is optimised for Electronic Lamp
Ballast application, AC-DC adaptors and SMPS.