Littelfuse PLED 5 QFN User Manual
PLED Open LED Protectors
Control
Circuit
MT1
MT2
Control
Circuit
MT1
MT2
MT2
MT1
PLED5 QFN Series
Schematic Symbol
RoHS
Description
This PLED5 Open LED Protector device provides three
methods for increasing the reliability of LED lighting:
1) If one of the LEDs in an array fails open, this device
provides a substitute electronic path so that the string
continues to function
2) It protects against ESD events up to ± 8 kV for contact
discharges and ± 15 kV for air discharges per the IEC
61000-4-2 electrostatic immunity standard.
3) It provides protection in the case of accidental reverse
battery or power connection.
High reliability of lighting functions such as trafc lighting,
aircraft lighting, advertising lighting, and runway lighting
demand the use of a device such as the PLED5.
Littelfuse offers over current devices for implementation in
power circuits that can also enhance the reliability of circuit
operation. Our full line of circuit protection products can be
viewed at www.littelfuse.com.
Pinout
Features & Benefits
• Reverse Battery/Power
Protection
• ESD, IEC 61000-4-2, ±8kV
contact, ±15 kV air
• Low Turn-On (Trigger
Voltage)
• Ideal for MR16, PAR type
lamps
• Open LED bypass up to
500 mA
• Fast Switching
• Resets After Power Cycle
Electrical Characteristics
Part Marking Symbol Parameter Conditions MIN TYP MAX Unit
PLED5Q12 Px5 V
Notes:
©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
1
Parameter is guaranteed by design and/or device characterization.
AK
V
TO
I
S
V
OS
I
OS
V
OSR
I
OSR
I
DRM
V
ESD
Input Voltage 40 V
Turn-On Voltage 4.65 4.9 5.15 V
Switching Current 20 mA
On-State Voltage IAK= 350 mA 1 1. 3 V
On-State Current (with adequate heat sinking) 500 mA
Reverse On-State Voltage I = 350 mA 1 1. 4 V
Reverse On-State Current 500 mA
Leakage Current V
ESD Withstand Voltage
1
1
Revision: June 19, 2013
IEC61000-4-2 (Contact) ± 8 kV
= 3.5 V 100 150 μA
AK
IEC61000-4-2 (Air) ± 15 kV
PLED5 QFN Series
Thermal Considerations
+I
AK
0.5A
-1v
1.0 v
5.0 v
+V
AK
-V
AK
-0.5A
-I
AK
-40 10 60 110 160
5
4.9
4.8
4.7
4.6
VTO, TURN-ON VOLTAGE (V)
PWM
LED
Driver
V
bat
12 Vdc
+
-
2.0 Ω, 1/4 W
110 kΩ, 1/4 W
Q2
2N2222
Q1
Control
Circuit
PLED5
Control
Circuit
PLED5
Control
Circuit
MT2
MT2
MT2
MT1
MT1
MT1
PLED5
0
1
2
3
4
5
-401060 110 160
TA, AMBIENT TEMPERATURE (ºC)
I
S
, SWITCHING CURRENT (mA)
QFN
0
20
40
60
80
100
120
-500 50 100 150
TA, AMBIENT TEMPERATURE (ºC)
I
DSS
, LEAKAGE CURRENT (µA)
Package Symbol Parameter Value Unit
PLED Open LED Protectors
T
OP
T
J
T
STOR
Operating Temperature -40 to 85 ºC
Maximum Junction Temperature 150 ºC
Storage Temperature
-65 to 150
ºC
V-I Characteristics
Turn On Voltage vs Temperature
Switching Current vs Temperature
Leakage Current vs Temperature
LED Application and Interference Test Circuit
©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Ordering Information
2
Revision: June 19, 2013
Catalog Number Package Type Quantity Per Reel
PLED5Q12
QFN 3000 Pieces
PLED5 QFN Series
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