LND080A Datasheet, PDF (1/1 Pages) Linear Dimensions Semiconductor – 85-347VAC True One-Wire Offline Emergency Light Driver

PRELIMINARY DATA SHEET
GENERAL DESCRIPTION
The LND080A/B are single wire HV
conductor, low cost, solutions for AC
offline emergency lighting. The LN080 is
capable of operating from 120V, 277V, or
347V without requiring the user to utilize
different input wires. This reduces
returns typical in the emergency lighting
market.
The LND080 includes the offline full
bridge diodes, battery charger logic, and
two resistor programmed current sources
which can provides up to 100mA of
output each.
The LND080A is targeted at exit signs
and the LND080B for emergency lights.
A switch driver and debounce circuitry
allow regulatory tests.
The LND080 are packaged in 10 pin
EPAD SOIC packages.
APPLICATIONS
• Exit Signs
• Emergency Lights
• Battery Backed-up Lanterns
• AC Charging LED Flashlights
• AC Charging Helmet Lamps
LND080A/B
85-347VAC True One-Wire
Offline Emergency Light Driver
FEATURES
• Offline emergency light interface
• Lowest cost solution
• Includes full bridge diodes
• Universal 85VAC-347VAC Input
• Single wire HV conductor eliminates
need for separate HV input wires
• On board battery charger
• Two on board resistor programmed
current sources up to 100mA
• Switch driver current source with on
board debounce
• LND080A for use with normally on LED
strings (exit signs). Button removes AC
to test battery connection.
• LND080B for use with normally off LED
strings (emergency lights). Button
removes AC and engages LEDs.
• LND080B autodetects loss of AC input
and engages LED strings
• Replaces standard transformer or AC
divider solutions
• 10 pin EPAD-SOIC Package
TYPICAL APPLICATION CIRCUIT
0.1uF, 100V
or Fuse
AC+
A
AC-
C
ISRC
VBAT
LED1+
LED2+
Cs1+
Cs2+
GND
• Linear Dimensions Semiconductor Inc. • 22620 Ricardo Rd, Cupertino CA 95014 USA • tel [phone] • fax [phone] • www.lineardimensions.com •