JW1758A/B/C
Offline Step-down LED Controller
With PFC and No Auxiliary Winding
Parameters Subject to Change Without Notice
DESCRIPTION
FEATURES
The JW1758A/B/C is a constant current LED
controller with high current accuracy which
applies to single stage step-down power factor
corrected LED drivers. 600V power MOS is
integrated, which can significantly simplify the
design of LED lighting system.
JW1758A/B/C integrates high voltage power
source, and can be supplied by line voltage
directly, and auxiliary winding is not needed.
High accuracy of output current is achieved by
sampling the output current directly. Critical
conduction mode operation reduces the switching
losses and largely increases the efficiency.
JW1758A/B/C has multi-protection functions
which largely enhance the safety and reliability of
the system, including VCC over-voltage
protection, VCC UVLO, LED open protection,
pulse-by-pulse current limit, inductor short
protection and over-temperature protection.
No auxiliary winding
Supplied from line voltage directly
600V high voltage MOSFET integrated
High current accuracy of line and load
regulation
High power factor with low output
current-ripple
Critical conduction mode
High efficiency over wide operating range
Cycle-by-cycle current limit
LED open protection
Inductor short protection
ISP short protection
Temperature compensation of LED
Internal over-temperature protection
SOP7 package
APPLICATIONS
Non-isolation Offline LED driver
TYPICAL APPLICATION
1
