protection products 1 www.semtech.com protection products - microclamp tm UCLAMP0544P clamp tm 4-line esd protection description features dimensions schematic revision 12/6/2008 the clamp tm series of tvs arrays are designed to pro- tect sensitive electronics from damage or latch-up due to esd. it is designed to replace single line devices such as multilayer varistors (mlvs) in space constrained ap- plications such as cell phones, notebook computers, and other portable electronics. it features large cross-sec- tional area junctions for conducting high transient cur- rents. tvs diodes offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage, and no device degrada- tion. the clamp tm 0544p is in a 10-pin, rohs/weee compli- ant, slp2510p8 package. it measures 2.5 x 1.0 with a nominal height of 0.58mm. the leads are spaced at a pitch of 0.5mm and are finished with lead-free nipdau. they are designed for easy pcb layout by allowing the traces to run straight through the device. each device features four tvs diodes with an operat- ing voltage of 5 volts and a maximum loading capaci- tance of only 10pf. they may be used to meet the esd immunity require- ments of iec 61000-4-2, level 4 (15kv air, 8kv contact discharge). the combination of small size and high esd surge capability makes them ideal for use in portable applications such as cellular phones, digital cameras, and notebook computers. applications mechanical characteristics ? cellular handsets & accessories ? notebooks & handhelds ? mp3 players ? cordless phones ? portable instrumentation ? digital cameras ? peripherals ? transient protection for data lines to iec 61000-4-2 (esd) 15kv (air), 8kv (contact) iec 61000-4-4 (eft) 40a (tp = 5/50ns) cable discharge event (cde) ? ultra-small package ? protects four data lines ? low clamping voltage ? working voltage: 5v ? low capacitance (10pf) ? solid-state silicon-avalanche technology ? slp2510p8 package ? rohs/weee compliant ? nominal dimensions: 2.5 x 1.0 x 0.58 mm ? lead finish: nipdau ? molding compound flammability rating: ul 94v-0 ? marking : marking code ? packaging : tape and reel 3,8 1 2 4 5 nominal dimensions (mm) (slp2510p8 bottom view) note: pins 6, 7, 9, and 10 are not internally connected. 2.50 0.58 1.00 0.50 bsc 1 2
2 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P absolute maximum rating electrical characteristics (t=25 o c) r e t e m a r a pl o b m y ss n o i t i d n o cm u m i n i ml a c i p y tm u m i x a ms t i n u e g a t l o v f f o - d n a t s e s r e v e rv m w r 5v e g a t l o v n w o d k a e r b e s r e v e rv r b i t a m 1 =61 . 75 . 8v t n e r r u c e g a k a e l e s r e v e ri r v m w r c 5 2 = t , v 5 =0 1 0 . 00 1 . 0a e g a t l o v d r a w r o fv f i f a m 0 1 =12 . 1v e g a t l o v g n i p m a l cv c i p p t , a 2 = p s 0 2 / 8 =5 . 2 1v e c n a t i c a p a c n o i t c n u jc j v r z h m 1 = f , v 0 =0 1f p e c n a t i c a p a c n o i t c n u jc j v r z h m 1 = f , v 3 . 3 =5 . 4f p g n i t a rl o b m y se u l a vs t i n u ) s 0 2 / 8 = p t ( r e w o p e s l u p k a e pp k p 5 2s t t a w ( t n e r r u c e s l u p k a e p m u m i x a m) s 0 2 / 8 = p ti p p 2s p m a ) r i a ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e ) t c a t n o c ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e v d s e 0 2 - / + 5 1 - / + v k e r u t a r e p m e t g n i t a r e p ot j 5 2 1 + o t 5 5 -c e r u t a r e p m e t e g a r o t st g t s 0 5 1 + o t 5 5 -c
3 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P typical characteristics non-repetitive peak pulse power vs. pulse time 0 10 20 30 40 50 60 70 80 90 100 110 0 25 50 75 100 125 150 ambient temperature - t a ( o c) % of rated power or i pp power derating curve clamping voltage vs. peak pulse current forward voltage vs. forward current normalized junction capacitance vs. reverse voltage esd clamping (8kv contact per iec 61000-4-2) 0 5 10 15 0 0.5 1 1.5 2 2.5 3 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8 s td = 20 s 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 012345 reverse voltage - v r (v) c j (v r ) / c j (v r =0) f = 1 mhz 0.01 0.1 1 10 0.1 1 10 100 pulse duration - tp (us) peak pulse power - p pp (kw) note: data is taken with a 10x attenuator 0 1 2 3 4 5 6 7 8 02468101214 forward current - i f (a) forward voltage - v f (v) waveform parameters: tr = 8 s td = 20 s
4 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P circuit diagram device connection this device is designed to protect four data lines. the device is unidirectional and may be used on lines where the signal polarity is above ground. the UCLAMP0544P is designed such that the traces flow straight through the device. this is accomplished by using pcb traces to connect the pin pairs for each line (pin 1 to pin 10, pin 2 to pin 9, pin 4 to pin 7, pin 5 to pin 6). for example, line 1 enters at pin 1 and exits at pin 10 and the pcb trace connects pin 1 and 10 together. this is true for lines connected at pins 2, 4, and 5 also. ground is connected at pins 3 and 8. one large ground pad should be used in lieu of two sepa- rate pads. multiple ground vias are recommended in order to reduce inductance in the ground path. this will maximize the device?s effectiveness during an esd event. circuit board layout recommendations for suppres- sion of esd. good circuit board layout is critical for the suppression of esd induced transients. the following guidelines are recommended: z place the tvs near the input terminals or connec- tors to restrict transient coupling. z minimize the path length between the tvs and the protected line. z minimize all conductive loops including power and ground loops. z the esd transient return path to ground should be kept as short as possible. z never run critical signals near board edges. z use ground planes whenever possible. applications information 3,8 1 2 4 5 1 line 1 in line 2 in line 3 in line 4 in gnd line 1 out line 2 out line 3 out line 4 out layout example
5 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P spice model applications information - spice model s r e t e m a r a p e c i p s p 4 4 5 0 p m a l c u r e t e m a r a pt i n u) s v t ( 1 d s ip m a5 1 - e 5 0 . 2 v bt l o v2 . 7 j vt l o v9 7 . 0 s rm h o8 0 9 . 0 v b ip m a3 - e 0 . 1 o j cd a r a f2 1 - e 7 . 9 t tc e s9 - e 1 4 5 . 2 m- -5 2 . 0 n- -1 . 1 g ev e1 1 . 1
6 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P outline drawing - slp2510p8 land pattern - slp2510p8 inches .020 bsc b .006 bbb aaa n l e d .012 dim a1 a2 a min 0.00 .020 0.25 0.15 .010 0.20 .008 0.425 0.30 .004 .003 8 .015 .098 .017 0.08 0.10 8 0.38 2.50 0.50 bsc millimeters max 0.05 0.65 dimensions min 0.00 nom (.005) .023 .001 max .002 .026 nom 0.50 0.03 (0.13) 0.58 controlling dimensions are in millimeters (angles in degrees). notes: 1. a2 a1 a bbb c a b bxn bbb c a b d/2 b1xn lxn e/2 r0.125 2x r0.075 b1 .014 .016 .018 0.35 0.40 0.45 7 places 1.00 .039 e 2.60 2.40 .102 .094 0.90 1.10 .043 .035 e d a aaa c pin 1 indicator (laser mark) b c seating plane 1 e 2 n controlling dimensions are in millimeters (angles in degrees). 1. z (.061) (1.55) y1 (y1) y p1 x p1 .039 1.00 x1 .016 0.40 x1 p g (c) this land pattern is for reference purposes only. consult your manufacturing group to ensure your notes: 2. dim x y p g c millimeters inches (0.875) .008 .027 .008 .020 (.034) 0.20 0.675 0.50 0.20 dimensions company's manufacturing guidelines are met. 1.55 .061 z
7 ? 2008 semtech corp. www.semtech.com protection products UCLAMP0544P contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804 marking code ordering information r e b m u n t r a p g n i k r o w e g a t l o v r e p y t q l e e r l e e r e z i s t c t . p 4 4 5 0 p m a l c uv 50 0 0 , 3h c n i 7 notes: 1) this is a lead-free, rohs/weee compliant product microclamp, uclamp and clamp are marks of semtech corporation tape and reel specification device orientation in tape e p a t h t d i w ) x a m ( , bd1 de f k ) x a m ( p0 p2 p) x a m ( tw m m 8 m m 2 . 4 ) 5 6 1 . ( m m 1 . 0 + 5 . 1 m m 0 . 0 - 5 0 0 . + 9 5 . 0 ( ) 0 0 0 . - m m 8 . 0 5 0 . 0 ) 1 3 0 . ( 0 1 . 0 5 7 . 1 m m ) 4 0 0 . 9 6 0 . ( 5 0 . 0 5 . 3 m m ) 2 0 0 . 8 3 1 . ( m m 4 . 2 ) 4 9 0 . ( 1 . 0 0 . 4 m m - 0 0 . 7 5 1 . ( ) 4 1 . 0 0 . 4 m m - 0 0 . 7 5 1 . ( ) 4 - m 5 0 . 0 0 . 2 m ) 2 0 0 . 9 7 0 . ( m m 4 . 0 ) 6 1 0 . ( m m 0 . 8 m m 3 . 0 + m m 1 . 0 - ) 2 1 0 . 2 1 3 . ( pin 1 location user direction of feed 0 a0 b0 k m m 0 1 . 0 - / + 3 2 . 1m m 0 1 . 0 - / + 0 7 . 2m m 0 1 . 0 - / + 0 7 . 0 pin 1 indicator (laser mark) uc544
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