st系列pfc芯片 l6562d

1 features
■ realised in bcd technology
■ transition-mode control of pfc preregulators
■ proprietary multiplier design for
minimum thd of ac input current
■ very precise adjustable output
overvoltage protection
■ ultra-low (≤70μa) start-up current
■ low (≤4 ma) quiescent current
■ extended ic supply voltage range
■ on-chip filter on current sense
■ disable function
■ 1% (@ tj = 25 °c) internal reference
voltage
■ -600/+800ma totem pole gate driver with
uvlo pull-down and voltage clamp
■ dip-8/so-8 packages ecopack®
1.1 applications
■ pfc pre-regulators for:
– iec61000-3-2 compliant smps (tv,

2 description
the l6562 is a current-mode pfc controller operating
in transition mode (tm). pin-to-pin compatible
with the predecessor l6561, it offers improved
performance.