___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 1/6 UM1002 dual channel esd protection device UM1002 sot23-6 general description the UM1002 is a low pass filter array with integrat ed tvs diodes for esd protection. it is designed to provide bidirectional filtering of emi/ rfi sign als and electrostatic discharge (esd) protection in portable electronic equipment. this state-of-the art device utilizes solid-state silicon-avalanche technology for superior clamping performance and dc electrical characteristics. they have been optimized for use on a usb port in cellular phone and other portable electronics. the UM1002 effectively replaces 10 discrete components in a small sot23-6 package to provide esd protection and emi filtering. this small package will protect and filter up to two lines. this small outline makes the device especially well suited for portable applications. the tvs diodes are bi-directional for supporting bipolar signals without distortion. the tvs diodes provide effective suppression of esd voltages in excess of 15kv (air discharge) and 8kv (contact discharge) per iec61000-4-2, level 4.the device has very low insertion loss in the pass band (to approximately 10mhz) and high attenuation at frequencies ranging from 800mhz to 3ghz. each line features two stages of tvs diode protection. they feature large cross-sectional area junctions for conducting high transient currents. they offer des irable characteristics for board level protection including fast response time, low operating and clamping voltage, and no device degradation. applications features web-pads & handhelds notebook portable instrumentation industrial interface treadmill transient protection for data lines to iec 61000-4-2 (esd) 15 kv (air), 8 kv (contact) bidirectional emi/rfi filter with integrated esd protection protects two i/o lines working voltage: 5 v low leakage current low operating and clamping voltages solid-state silicon-avalanche technology pin configurations top view UM1002 sot23-6 ww: weekly code
___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 2/6 UM1002 ordering information part number working voltage packaging type channel marking code shipping qty UM1002 5.0v sot23-6 6 u02 3000/7 inch reel absolute maximum ratings rating symbol value units steady-state power p ss 100 mw operating temperature t j -55 to +125 c storage temperature t stg -55 to +125 c - electrical characteristics (t=25c) parameter symbol conditions min typ max unit reverse stand-off voltage v rwm 5 v reverse breakdown voltage v br it = 1ma 6 v reverse leakage current i r v rwm = 5v, t=25c 5 a series resistance r each line 0.8 1 1.5 ohms total capacitance c tot any i/o to gnd v r =0v, f=1mhz 20 pf
___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 3/6 UM1002 typical operating characteristics typical insertion loss analog crosstalk forward voltage vs. peaking pulse current junction capacitance vs. reverse voltage esd clamping (8kv contact) esd clamping (15kv air)
___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 4/6 UM1002 applications information device connection for protection of quad data lines the UM1002 provides emi filtering and esd protection in a small sot23-6 package for dual line data port applications. the layout of the device is designed such that the data lines can be routed through the device. the first line pair enters at pin 1 and exits at pin 6. the second line pair enters at pin 3 and exits at pin 4. the device is symmetrical so the above connections may be reversed. circuit board layout recommenda tions for suppression of esd good circuit board layout is critical for the su ppression of esd induced transients. the following guidelines are recommended: place the tvs near the input terminals or connectors to restrict transient coupling. minimize the path length between the tvs and the protected line. minimize all conductive loops including power and ground loops. the esd transient return path to ground should be kept as short as possible. never run critical signals near board edges. use ground planes whenever possible. layout example pin identification 1 line 1 in (from speaker) 6 line 1 out (to audio circuit) 3 line 2 in (from speaker) 4 line 2 out (to audio circuit) 2, 5 ground pin identification 6 line 1 in (from speaker) 1 line 1 out (to audio circuit) 4 line 2 in (from speaker) 3 line 2 out (to audio circuit) 2, 5 ground
___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 5/6 UM1002 package information UM1002 sot23-6 outline drawing dimensions millimeters inches symbol min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0.400 0.012 0.016 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950ref 0.037ref e1 1.800 2.000 0.071 0.079 l 0.300 0.600 0.012 0.024 0 8 0 8 land pattern notes: 1. compound dimension: 2.921.60: 2. unit: mm; 3. general tolerance0.05mm unless otherwise specified; 4. the layout is just for reference. tape and reel orientation
___________________________________________________________________________ http://www.union-ic.com rev.03 feb.2009 6/6 UM1002 important notice the information in this document has been carefully reviewed and is believed to be accurate. nonetheless, this document is subject to change without notice. union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add: 7f, no. 5, bibo road, shanghai 201203 tel: 021-51097928 fax: 021-51026018 website: www.union-ic.com
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