JW1969A中文资料杰华特数据手册PDF规格书

DESCRIPTION

The JW®

1969A/JW1969B/JW1969C/JW1969D/

JW1969E/JW1969BC/JW1969DC/JW1969EC

(JW1969X series) is a constant current LED

regulator which apply to single stage step-down

power factor corrected LED drivers.

JW1969X series integrates high voltage power

source, and can be supplied by line voltage

directly, auxiliary winding and VCC capacitor are

not needed.

Patented current sensing and digital

compensation technics ensure a unit power factor

and high accuracy output current. The critical

conduction mode operation reduces the switching

losses and increases the efficiency.

JW1969X series has multi-protection functions

which largely enhance the safety and reliability of

the system, including LED open protection, LED

short protection and over-temperature protection.

FEATURES

 No auxiliary winding and VCC capacitor

 Supplied from line voltage directly

 High current accuracy of line and load

regulation

 Internal compensation PFC technics

 Harmonic current meets IEC61000-3-2

 Critical conduction mode

 High efficiency over wide operating range

 High voltage power MOSFET integrated

 LED open protection

 LED short protection

 Internal over-temperature protection

 SOP7 and DIP7 packages

APPLICATIONS

 Non-isolation Offline LED driver