MHP-TM EVIES Overtemperature Protection For Lithium Polymer (LiP) and prismatic cells used in various portable electronic applications
MHP-TM EVIES Overtemperature Protection The rapidly expanding market for ultra-thin portable electronic devices such as media tablets and ultra-thin Ps has created demand for very thin, low-profile, light-weight and high-capacity Lithium Polymer (LiP) and prismatic cells. new MHP (Metal Hybrid PPT) device, the MHP-TM, offers a 9V rating and a higher current rating than typical battery strap devices to meet the battery safety requirements of higher-capacity LiP and prismatic batteries found in the latest tablet and ultra-thin computing products. Hybrid MHP technology connects a bimetal protector in parallel with a PPT (polymeric positive temperature coefficient) device. The resulting MHP-TM device helps provide resettable overtemperature protection, while utilizing the PPT device to act as a heater and to help keep the bimetal latched until the fault is removed. enefits apable of handling voltages and battery charge rates found in high-capacity LiP and prismatic cells used in cutting-edge applications Helps provide resettable and accurate overtemperature protection ompact size and thin form factor facilitates circuit protection in ultra-thin battery pack designs ustomization of welding leads available to facilitate design Features Two levels of hold current: - Low current (nominal 6 hold current @5 ) - High current (nominal 15 hold current @5 ) Multiple temperature ratings - (7, 77, 8, 85, 90 ) ompact size (L:5.8mm x W:3.85mm x H:1.15mm) pplications attery cell protection for high-capacity Lithium Polymer and prismatic cells used in: - Notebook Ps - Ultra-book - Tablets - Smart phones
MHP-TM evices esign oncept In normal operation, current passes through the bimetal contact due to its low contact resistance. uring an abnormal event, the device reacts to the rise in cell temperature causing the bimetal contact to open at the specified temperature and its contact resistance to increase. t this point, the current shunts to the lower resistance PPT which acts as a heater and helps keep the bimetal protector open and in a latched position until the fault is removed. Rc Rptc Leakage current Electrical haracteristics (Typical) Series Model Number Rating [ ] Nominal Operation Temperature [ ] Reset Temperature [ ] Reference Resistance [mohms] 5 Min Max Min T Typ Max Typical Electrical Rating (5 ) Max. reaking urrent 5V /0 (100 cycles) ontact Rating 9V /1 (6000 cycles) MHP-TM6-9-7 7 67 77 0 7 10 15 MHP-TM6-9-77 77 7 8 0 10 10 15 MHP-TM6-9-8 8 77 87 0 10 10 15 MHP-TM6-9-85 85 80 90 0 10 10 15 Typical Electrical Rating (5 ) Max. reaking urrent 5V /80 (100 cycles) ontact Rating 9V /5 (6000 cycles) MHP-TM15-9-7 7 67 77 0 * 7.5 5 MHP-TM15-9-77 77 7 8 0 * 10.5 5 MHP-TM15-9-8 8 77 87 0 * 10.5 5 MHP-TM15-9-85 85 80 90 0 * 10.5 5 MHP-TM15-9-90 90 85 95 0 * 10.5 5 * The minimum temperature differential between the actual operation temperature of the device and the reset temperature 3
MHP-TM evices Hold urrent vs. Temperature urves 10 9 8 - MHP-TM6-9-7 7 - MHP-TM6-9-77 urrent () 6 5 3 - MHP-TM6-9-8 - MHP-TM6-9-85 1 0 0 30 0 50 60 70 80 Temperature ( ) 0 18 - MHP-TM15-9-7 16 - MHP-TM15-9-77 urrent () 1 1 10 E - MHP-TM15-9-8 - MHP-TM15-9-85 8 6 E - MHP-TM15-9-90 0 0 30 0 50 60 70 80 Temperature ( ) imensions In Millimeters MHP-TM6 and : 5.8 E Min Max -ø0. 10.9 11..5 1. 1..5-1.15 3.75 3.85 0.7 0.10 0.01 0.1 0.7 0.10 0.01 0.1.6.8 E.6.8 (0.) (0.) Unless otherwise specified, all tolerances are 0.1mm.
MHP-TM evices Packaging and Marking Information Part Number ag Quantity Standard Package Part Marking 1,000 0,000 Lot I#, ontrol# & o. Logo, Product # 1,000 0,000 Lot I#, ontrol# & o. Logo, Product # gency Recognition Part Number gency Recognition UL & cul File No. E3989; File No. US-3966-M1-UL UL & cul File No. E3989; File No. US-160-UL Part Numbering System MHP TM 15 9 7 Nominal ctivation Temperature ontact Voltage Rating Nominal Hold urrent at Room Temperature Product Group Series Name Physical haracteristics Terminals Molding Plastic opper lloy LP (Liquid rystal Polymer) RoHS and Halogen-free ompliance RoHS ompliant Halogen Free per IE 619--1 Notice: Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, lifesustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and onditions of Sale, unless otherwise agreed by Littelfuse. 5