PLED Open LED Protectors PLED Unidirectional Series RoHS PLED Unidirectional Series (PLEDxxUx) Description PLED Unidirectional Series (PLEDxxUx 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 Agency Approvals Series devices are available in two surface mount packages, the DO-214AA and the Quad Flat Pak No-lead (QFN). The Agency Agency File Number QFNs low profile, chip scale package (CSP) is ideal for dense board applications. E133083 Features & Benefits Schematic Symbol F ast switching Compatible with industrial lighting environments MT2 R everse Battery/Power Protection Compatible with PWM frequencies up to 10 kHz Control A utomatically resets after Circuit power cycle R oHS compliant and halogen-free Available in low profile, small footprint QFN MT1 and Standard DO214AA Cathode (bar marking side) packages Electrical Characteristics (All parameters are measured at T=25C unless otherwise noted) V V Critical rate of BR DRM 1 I I I V V I V V I H S T T T F F F O breakdown breakdown rise dV/dt Part Number Marking Volts Volts mAmps mAmps Amps Volts Amps Volts Amps Volts Min Max Min Max Max Max Max Max Max Min Max PLED6UQ12 PL6U 6 16 6 30 50 1.0 1.2 1.0 1.0 1.0 PLED6US PL6U 6 16 6 30 50 1.0 1.2 1.0 1.0 1.0 PLED9UQ12 PL9U 9 18 9 30 50 1.0 1.2 1.0 1.0 1.0 PLED9US PL9U 9 18 9 30 50 1.0 1.2 1.0 1.0 1.0 PLED13UQ12 PL13U 13 26 13 30 50 1.0 1.2 1.0 1.0 1.0 250V/s PLED13US PL13U 13 26 13 30 50 1.0 1.2 1.0 1.0 1.0 PLED18UQ12 PL18U 18 33 18 30 50 1.0 1.2 1.0 1.0 1.0 PLED18US PL18U 18 33 18 30 50 1.0 1.2 1.0 1.0 1.0 PLED35US* PL35U 35 50 35 30 50 1.0 1.2 1.0 1.0 1.0 note: 1. I - Operation current tested alumium boards, ambient temp 85C O 2. Part with * is not a UL Recognized Part 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 09/25/15PLED Open LED Protectors PLED Unidirectional Series Thermal Considerations Package Symbol Parameter Value Unit T Operating Junction Temperature Range -40 to +150 C J QFN 3x3 DO-214AA T Storage Temperature Range -65 to +150 C S 1 DO-214AA: 90 2 R Thermal Resistance: Junction to Ambient DO-214AA: 40 C/W JA 1 QFN: 120 3 QFN: 60 Notes: 1) Standard FR-4 PCB with Copper Pads (Recommended Size) 2) Aluminum PCB Thickness: 1.6mm Grade: 1-2 W/mK Thermal Conductivity Trace thickness: 2 oz Insulation layer thickness: 215 m Solder Pad Dimensions: 2.0mm x 2.8mm (Recommended Size) 3) Aluminum PCB Thickness: 1.6mm Grade: 1-2 W/mK Thermal Conductivity Trace thickness: 2 oz Insulation layer thickness: 60 m Solder Pad Dimensions: 1.27mm x 2.54mm (Recommended Size) V-I Characteristics V vs. Junction Temperature BR +I 14 12 I T 10 I S 8 I H 6 V F 25 C 4 -V +V 2 V V DRM T 0 V BR -4 -6 I T -8 0 20 40 60 80 100 120 140 160 -40 -20 -I Junction Temperature (T ) C J Normalized DC Holding Current vs. Case Temperature LED Interference Test Circuit Q1 2.0 LED Driver 1.8 2.0 , 1/4 W 1.6 110 k, 1/4 W 1.4 25 C + 1.2 V bat Q2 12 Vdc - 2N2222 1.0 0.8 PWM MT2 0.6 Control Circuit Unidiretional ON/OFF PLED 0.4 MT1 Switch -40 -20 0 20 40 60 80 100 120 140 160 Case Temperature (T ) C C 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 09/25/15 i H R atio of i (T =) 2 5 C H C P ercVent of C%hange BR