AP1661 Datasheet, PDF (1/13 Pages) BCD Semiconductor Manufacturing Limited – POWER FACTOR CORRECTION CONTROLLER

Data Sheet
POWER FACTOR CORRECTION CONTROLLER
General Description
Features
AP1661
The AP1661 is an active power factor control IC which
is designed mainly for use as pre-converter in elec-
tronic ballast, AC-DC adapters and off-line SMPS
applications.
The AP1661 includes an internal start-up timer for
stand-alone applications, a one-quadrant multiplier to
realize near unity power factor and a zero current
detector to ensure DCM boundary conduction opera-
tion. The totem pole output stage is capable of driving
power MOSFET with 600mA source current and
800mA sink current.
Designed with advanced BiCMOS process, the
AP1661 features low start-up current, low operation
current and low power dissipation. The AP1661 also
has rich protection features including over-voltage pro-
tection, input under-voltage lockout with hysteresis
and multiplier output clamp to limit maximum peak
current.
This IC is available in SOIC-8 and DIP-8 packages.
· Zero Current Detection Control for DCM Bound-
ary Conduction Mode
· Adjustable Output Voltage with Precise Over-
Voltage Protection
· Low Start-up Current with 50μA Typical Value
· Low Operating Supply Current with 4mA Typical
Value
· 1% Precision Internal Reference Voltage
· Internal Start-up Timer
· Disable Function for Reduced Current
Consumption
· Totem Pole Output with 600mA Source Current
and 800mA Sink Current Capability
· Under-Voltage Lockout with 2.5V of Hysteresis
Applications
· AC-DC Adapter
· Off-line SMPS
· Electronic Ballast
SOIC-8
DIP-8
Aug. 2008 Rev. 1. 1
Figure 1. Package Types of AP1661
BCD Semiconductor Manufacturing Limited
1