Features Applications Superior circuit protection SLIC protection Overcurrent & overvoltage protection Cable & DSL Blocks surges up to rated limits MDU/MTU modems High-speed performance ONT Small SMT package Voice/DSL line cards RoHS compliant* Agency recognition: TBU-PL Series - TBU High-Speed Protectors General Information V dd The TBU-PL Series of Bourns TBU products are low capacitance dual bidirectional high-speed protection components, constructed using MOSFET semiconductor technology, and designed to protect against faults Line 1 SLIC Line 1 caused by short circuits, AC power cross, induction and lightning surges. In addition to overcurrent protection, an added feature is the voltage monitoring on the two lines. If the voltage on the line drops below V then the voltage will trigger the device to switch to the blocking state. Line 2 SLIC Line 2 ss The TBU high-speed protector placed in the system circuit will monitor the current with the MOSFET detec- tion circuit triggering to provide an effective barrier behind which sensitive electronics will not be exposed to V ss large voltages or currents during surge events. The TBU device is provided in a surface mount DFN package TBU Device Agency Approval Industry Standards (in Conjunction with OVP Device) Solutions available for GR-1089-CORE, ITU-T and a combination of both. Description UL File Number: E315805 Absolute Maximum Ratings ( T = 25 C Unless Otherwise Noted) A Symbol Parameter Part Number Value Unit TBU-PL050-xxx-WH 500 TBU-PL060-xxx-WH 600 V Peak impulse voltage withstand with duration less than 10 ms V imp TBU-PL075-xxx-WH 750 TBU-PL085-xxx-WH 850 TBU-PL050-xxx-WH 300 TBU-PL060-xxx-WH 350 V Continuous A.C. RMS voltage V rms TBU-PL075-xxx-WH 400 TBU-PL085-xxx-WH 425 T Operating temperature range -55 to +125 C op T Storage temperature range -65 to +150 C stg T Maximum Junction Temperature +125 C jmax ESD HBM ESD Protection per IEC 61000-4-2 on line pads 2 kV Electrical Characteristics ( T = 25 C Unless Otherwise Noted) A Symbol Parameter Part Number Min. Typ. Max. Unit Current required for the device to go from TBU-PLxxx-100-WH 100 150 200 I mA trigger operating state to protected state TBU-PLxxx-200-WH 200 300 400 R Series resistance of the TBU device 40 50 55 device R Package resistance matching of the TBU device 1 - TBU device 2 0.5 1.0 match t Time taken for the device to go into current limiting 1 s block I Current through the triggered TBU device with 50 Vdc circuit voltage 0.25 0.70 1.50 mA Q I Operating current with V = -50 V 100 A ss ss Forward Mode 12 15 22 TBU-PLxxx-100-WH Reverse Mode 10 13 20 Voltage below which the triggered TBU V V reset device will transition to normal operating state Forward Mode 15 20 25 TBU-PLxxx-200-WH Reverse Mode 12 17 22 V Voltage threshold offset with 60 Hz applied voltage, with V -50 V (V - V) -1.0 0.2V to ss ss lineSLIC V Operating voltage range relative to V -180 -20 V ss dd R One side junction to package pads - FR4 using minimum recommended pad layout 110 C/W th(j-l) R Both sides junction to package pads - FR4 using minimum recommended pad layout 65 C/W th(j-l) 2 2 R One side junction to package pads - FR4 using heat sink on board (6 cm ) (0.5 in.) 70 C/W th(j-l) 2 2 R Both sides junction to package pads - FR4 using heat sink on board (6 cm ) (0.5 in.) 40 C/W th(j-l) *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. WARNING Specications are subject to change without notice. Users should verify actual device performance in their specic Cancer and Reproductive Harm applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. *RoHS COMPLIANT TBU-PL Series - TBU High-Speed Protectors Environmental Characteristics Functional Block Diagram Parameter Value Moisture Sensitivity Level 1 HIGH Line 1 1B Line 1 SLIC VOLTAGE SWITCH CURRENT SENSE V dd + VOLTAGE COMPARATOR V ss V V dd ss V dd VOLTAGE COMPARATOR + V ss CURRENT SENSE HIGH Line 2 SLIC VOLTAGE Line 2 SWITCH Reference Application Basic TBU Operation The TBU-PL Series are high-speed protectors used in voice/ The TBU device, constructed using MOSFET semiconductor VoIP SLIC applications.The maximum voltage rating of the TBU technology, placed in the system circuit will monitor the device should never be exceeded. Where necessary, an OVP current with the MOSFET detection circuit triggering to provide device should be employed to limit the maximum voltage. A cost- an effective barrier behind which sensitive electronics are not effective protection solution combines Bourns TBU protection exposed to large voltages or currents during surge events. The devices with a pair of Bourns MOVs. For bandwidth sensitive TBU device operates in approximately 1 s - once line current applications, a Bourns GDT may be substituted for the MOV. If exceeds the TBU devices trigger current I . When operat- trigger ed, the TBU device will limit the current to less than the I EN55024 EMC compliance is required, the TBU device trigger value within the t duration. If voltage above V is contin- block reset uously sustained, the TBU device will subsequently reduce the connections and ground. current to a quiescent current level within a period of time that is dependent upon the applied voltage. GND V When the voltage on the SLIC output is driven below dd Line 1 (V V ) the TBU-PL series device switches to the Line 1 bat to SLIC blocking state, regardless of output current in the device. MOV After the surge, the TBU device resets when the voltage TBU across the TBU device falls to the V level. The TBU reset Device MOV device will automatically reset on lines which have no DC bias Line 2 Line 2 or have DC bias below V (such as unpowered signal lines). reset SLIC V If the line has a normal DC bias above V , the voltage ss reset across the TBU device may not fall below V after the reset surge. In such cases, special care needs to be taken to ensure that the TBU device will reset, with software monitoring as one method used to accomplish this. Bourns application engineers can provide further assistance. Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.