Description
The AP1661 is an active power factor control IC which is
designed mainly for use as pre-converter in electronic ballast,
AC-DC adapters and off-line SMPS applications.
The AP1661 includes an internal start-up timer for standalone
applications, a one-quadrant multiplier to realize
near unity power factor and a zero current detector to
ensure DCM boundary conduction operation. 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 protection, input
under-voltage lockout with hysteresis and multiplier output
clamp to limit maximum peak current.
Features
· Zero Current Detection Control for DCM Boundary
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
· Under-Voltage Lockout with 2.5V of Hysteresis
Applications
· AC-DC Adapter
· Off-line SMPS
· Electronic Ballast
Benefits
· High Performance PFC Controller
· High ESD Protection Level
· Very Competitive Price
Additional Available Materials
· Samples
· Preliminary Datasheet
· ESD Report
· Demo Board
· Application Note