SP6837 Datasheet, PDF (1/8 Pages) SYNC POWER Crop. – LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER

SP6837
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
DESCRIPTION
The SP6837 has the built-in programmable cable
voltage drop compensation function, which
make it flexible to accommodate various cables
with different gauges and lengths.
The SP6837provides accurate constant voltage,
constant current (CV/CC) regulation without
requiring an opto-coupler and secondary control
circuitry. It also eliminates the need of loop
compensation circuitry while maintaining
stability.
The SP6837 achieves excellent regulation and
high average efficiency, yet meets the
requirement for no-load consumption less than
30mW.
The SP6837is a high performance AC/DC power
supply controller for battery charger and adapter
applications. The device uses Pulse Frequency
Modulation (PFM) method to build
discontinuous conduction mode (DCM) flyback
power supplies.
The SP6837is available in SOIC-8 package.
FEATURES
· Primary Side Control for Eliminating Opto-
coupler and Secondary CV/CC Control Circuitry
· 30mW No-load Input Power
· Programmable Output Cable Voltage Drop
Compensation
· Proprietary CC Tightening Technique to Achieve
Vertical CC Profile
· Compensation for External Component
Temperature Variations
· Flyback Topology in DCM Operation
· Random Frequency Adjustment to Reduce
System EMI
· Built-in Soft Start
· Over Voltage Protection
· Short Circuit Protection
· SOIC-8 Package
APPLICATIONS
· Adapter/Chargers for Cell/Cordless Phones,
PDAs, MP3 and Other Portable Apparatus
· LED Driver
· Standby and Auxiliary Power Supplies
·
2014/03/12 Ver.1
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