P2470 ETAL | Alldatasheet
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Technical content
ETALDOC 882/2 Page 1 of 4 July 2007 PRODUCT DATA SHEET DC-DC Full Bridge Transformer P2470 Features Applications ∗ 1250Vrms Isolation ∗ Isolated RS-485 interface ∗ Surface Mount ∗ RoHS compliant ∗ LTC 1535, MAX3553E and MXL1535E circuits ∗ Wide operating temperature ∗ Power across safety barrier
DESCRIPTION
P2470 is an isolation transformer for use with LTC1535, MAX3535E and MXL1535E isolated RS-485 transceivers. P2470 is compliant with RoHS Directive 2002/95/EC, and suitable for lead-free and conventional placement and reflow.
ETALDOC 882/2 Page 2 of 4 July 2007 SPECIFICATIONS Electrical Values at T = 25ºC, unless otherwise stated. Parameter Conditions Min Typ Max Units Primary Inductance 1-4, 100kHz 250mV 382 500 711 µH Turns ratio 1-4 : 5-6 : 6-8 - 1.0 : 1.375 : 1.375 - - DC resistance 1-4 5-8 0.62 2.5 Ω Ω Dielectric strength Pri : sec, pri : core Sec : core 1250 500 - - Vrms Vdc Operating range Ambient temperature -40 - +85 ºC TYPICAL APPLICATION 23 1 1 LTC 1535/MAX3535E /MXL 1535E 10µF P2 4 7 0 Typical A pplication Fig . 1
ETALDOC 882/2 Page 3 of 4 July 2007 CONSTRUCTION Dimensions shown are in millimetres (inches). Terminal plating JESD97 category = e2 Recommended reflow solder profile: 2 minutes @ 150-200ºC, 10 seconds @ 260ºC; time above 217ºC 60 seconds maximum SAFETY ABSOLUTE MAXIMUM RATINGS (Ratings of components independent of circuit). Short term isolation voltage (1s) 1700Vrms Storage temperature -40ºC to +100ºC Operating temperature -40ºC to +85ºC Manufactured from materials conforming to flammability requirements of UL 94V-0. Soldering temperature profile peak 260ºC, 10s 1 : 1.375+ 1.375 PC B PATTERN Connections Fig . 3 12.2 1.35 2.0 6.0 1.2 Dimensions Fig . 2 ETAL P2 4 7 0 2.0 6.0 0.6 9.5 11.6 5.6 8.2
ETALDOC 882/2 Page 4 of 4 July 2007 COPYRIGHT ETAL and P2470 are Trade Marks of Profec Technologies Ltd. The Trade Mark ETAL is registered at the UK Trade Marks Registry. LTC1535 is trademark of Linear Technology, Inc. MAX3535E and MXL1535E are trademarks of Maxim Integrated Products, Inc Profec Technologies Ltd is the owner of the design right under the Copyright Designs and Patents Act 1988 and no rights or licences are hereby granted or implied to any third party. © 2007 Profec Technologies Ltd. Reproduction prohibited. ETAL Group Oy, Kuormatie 14, FIN-03101, Nummela Telephone: +358 (0)20 7500 330 Fax: +358 (0)20 7500 333 Website: www.etalgroup.com Email: etalgroup@egruppen.com FM 25326 ISO 9001