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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 A 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 current - 1%precisioninternal referencevoltage (Tj = 25°C) - Soft Output Over Voltage Protection - noneedfor external lowpassfilteronthe current sense - verylowoperating quiescentcurrentminimises 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.
L6561 Maximum Ratings
Symbol
Pin
Parameter
Value
Unit
IVcc
8
ICC + IZ
30
mA
IGD
7
Output Totem Pole Peak Current (2s)
±700
mA
INV, COMP MULT
1, 2, 3
Analog Inputs & Outputs
-0.3 to 7
V
CS
4
Current Sense Input
-0.3 to 7
V
ZCD
5
Zero Current Detector
50 (source) -10 (sink)
mA mA
Ptot
Power Dissipation @Tamb = 50 °C (Minidip) (SO8)
1 0.65
W
Tj
Junction Temperature Operating Range
-25 to 150
°C
Tstg
Storage Temperature
-55 to 150
°C
L6561 Features
·VERY PRECISE ADJUSTABLE OUTPUT OVERVOLTAGEPROTECTION ·MICROPOWERSTART-UPCURRENT (50mATYP.) ·VERYLOW 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 ·DIP8/SO8PACKAGES