Littelfuse PLEDxUx Series - Manual

1
PLED Open LED Protectors
Revision: November 12, 2013
©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
PLED Unidirectional Series
PLED Unidirectional Series
Description
PLED Unidirectional Series (PLEDxUx Series) open LED
protectors provide a switching electronic shunt path around
a single LED that fails as an open circuit. This ensures
the remaining string of LEDs will continue to function
even though a single LED in the string has failed open.
It also provides reverse battery or reverse power polarity
protection.
PLED Unidirectional Series devices were designed to
enable higher reliability in outdoor LED lighting applications
such as street lighting, outdoor signage, aircraft runway
lighting, roadside warning lights and other applications.
Compatible with one, two and three watt LEDs that have
a nominal 3V forward characteristic, PLED Unidirectional
Series devices are available in two surface mount packages,
the DO-214AA and the Quad Flat Pak No-lead (QFN). The
QFN’s low profile, chip scale package (CSP) is ideal for
dense board applications.
Electrical Characteristics (All parameters are measured at T=25°C unless otherwise noted)
Part Number Marking
V
BR
breakdown
V
DRM
breakdown
I
H
I
S
I
T
@V
T
V
T
@ I
T
=
1 Amp
I
F
@V
F
V
F
@ I
F
=
1 Amp
Critical rate of
rise dV/dt
Volts Volts mAmps mAmps Amps Volts Amps Volts Volts
Min Max Min Max Max Max Max Max Max Max
PLED6UQ12 PL6U
6 16 6
30 50 1.0 1.2 1.0 1.0 250V/µs
PLED6US PL6U
PLED9UQ12 PL9U
9 18 9
PLED9US PL9U
PLED13UQ12 PL13U
13 26 13
PLED13US PL13U
PLED18UQ12 PL18U
18 33 18
PLED18US PL18U
Features & Benefits
• Fast switching
• Reverse Battery/Power
Protection
• Automatically resets after
power cycle
• Available in low profile,
small footprint QFN
and Standard DO214AA
packages
• Compatible with industrial
lighting environments
• Compatible with PWM
frequencies up to 10 kHz
• RoHS compliant and
halogen-free
Agency Approvals
Agency Agency File Number
E133083
Schematic Symbol
Control
Circuit
MT 2
MT1
Cathode
(bar marking side)
PLED Unidirectional Series (PLEDxUx)