1 www.semtech.com rclamp3655p railclamp ? ? ? ? ? esd protection for uusb interfaces protection products - railclamp ? ? ? ? ? description features circuit diagram pin configuration revision 07/15/2009 railclamp ? is a low capacitance tvs array designed to protect high speed data interfaces. this series has been specifically designed to protect sensitive compo- nents which are connected to data and transmission lines from overvoltage caused by esd (electrostatic discharge), cde (cable discharge events), and eft (electrical fast transients). the rclamp3655p is specifically designed to protect portable devices that utilize a uusb port with an additional fm radio pin. the unique design of this device features low capacitance tvs diodes for protec- tion of the usb data (dp, dm), usb id, and fm radio pins operating up to 5 volts. loading capacitance on these lines is <1pf for maximum signal integrity. an integrated 28 volt tvs diode is used for protection of the usb voltage bus. this ensures the device will remain in a high-impedance state during normal usb operation or when the battery is being charged. leak- age current of the vbus protection is <250na when operating at 28 volts. the rclamp3655p is in an 8-pin, rohs compliant, slp3313p6 package. it measures 3.3 x 1.3 x 0.50mm. the leads are spaced at a pitch of 0.5mm and are finished with lead-free nipdau. they may be used to meet the esd immunity requirements of iec 61000-4-2, level 4 (15kv air, 8kv contact discharge). applications mechanical characteristics ? uusb interfaces with fm radio option ? usb otg ? transient protection for high-speed data lines to iec 61000-4-2 (esd) 15kv (air), 8kv (contact) iec 61000-4-4 (eft) 40a (5/50ns) ? array of surge rated diodes with internal tvs diode ? small package saves board space ? protects usb dp, dm, fm radio, and id pins to 5v ? protects usb vbus operating up to 28v ? low capacitance (<1pf) on dp, dm, fm and id pins ? no insertion loss to 2.0ghz 2.0ghz 2.0ghz 2.0ghz 2.0ghz ? low leakage current ? low clamping voltage ? innovative package for easy pcb layout ? solid-state silicon-avalanche technology ? slp3313p6 8l package ? rohs/weee compliant ? nominal dimensions: 3.3 x 1.3 x 0.50 mm ? lead finish: nipdau ? molding compound flammability rating: ul 94v-0 ? marking: marking code ? packaging: tape and reel slp3313p6 (top view) 34 5 6 gnd 1 5v 28v gnd gnd vbus vbat data - data + id fm radio 1
2 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p absolute maximum rating g n i t a rl o b m y se u l a vs t i n u ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , m d , p d) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , m d , p d ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , m d , p d ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , m d , p d) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , m d , p d ) s 0 2 / 8 = p t ( r e w o p e s l u p k a e pp k p 5 7s t t a w ) s 0 2 / 8 = p t ( t n e r r u c e s l u p k a e pi p p 5a ) 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 8 1 2 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 ) 1 n i p ( s u b v) 1 n i p ( s u b v ) 1 n i p ( s u b v ) 1 n i p ( s u b v) 1 n i p ( s u b v ) s 0 2 / 8 = p t ( r e w o p e s l u p k a e pp k p 0 5 3s t t a w ) s 0 2 / 8 = p t ( t n e r r u c e s l u p k a e pi p p 4a ) 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 8 1 2 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 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , p d , m d) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , p d , m d ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , p d , m d ) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , p d , m d) 6 , 5 , 4 , 3 s n i p ( o i d a r m f , d i b s u , p d , m d 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 d n g o t 6 r o , 5 , 4 , 3 n i p5v 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 = d n g o t 6 r o , 5 , 4 , 3 n i p 5 . 681 1v 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 , v 0 . 5 = d n g o t 6 r o , 5 , 4 , 3 n i p 5 0 0 . 00 0 1 . 0a e g a t l o v d r a w r o fv f i f a m 5 1 = 6 r o , 5 , 4 , 3 n i p o t d n g 6 . 02 . 1v e g a t l o v g n i p m a l cv c i p p s 0 2 / 8 = p t , a 1 = d n g o t 6 r o , 5 , 4 , 3 n i p 2 1v e g a t l o v g n i p m a l cv c i p p s 0 2 / 8 = p t , a 5 = d n g o t 6 r o , 5 , 4 , 3 n i p 5 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 = d n g o t 6 r o , 5 , 4 , 3 n i p 7 . 00 8 . 0f p v r , z h m 1 = f , v 0 = s n i p o / i n e e w t e b 4 . 0f p electrical characteristics (t = 25 o c)
4 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p ) 1 n i p ( s v t s u b v) 1 n i p ( s v t s u b v ) 1 n i p ( s v t s u b v ) 1 n i p ( s v t s u b v) 1 n i p ( s v t s u b v 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 d n g o t 1 n i p8 2v 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 = d n g o t 1 n i p 2 36 30 4v 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 v 8 2 = d n g o t 1 n i p 0 1 0 . 00 5 2 . 0a e g a t l o v d r a w r o fv f i f a m 0 1 = 1 n i p o t d n g 6 . 00 . 1v e g a t l o v g n i p m a l c d r a w r o fv c f i p p s 0 2 / 8 = p t , a 0 1 = 1 n i p o t d n u o r g 3v e g a t l o v g n i p m a l cv c i p p s 0 2 / 8 = p t , a 1 = d n u o r g o t 1 n i p 8 4v 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 = d n g o t 1 n i p 8 20 4f p electrical characteristics (t = 25 o c)
5 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p typical characteristics non-repetitive peak pulse power vs. pulse time (data lines - pins 3, 4, 5, or 6 to gnd) pulse waveform 0 10 20 30 40 50 60 70 80 90 100 110 0 5 10 15 20 25 30 time (s) percent of i pp e -t td = i pp /2 waveform parameters: tr = 8s td = 20s clamping voltage vs. peak pulse current (vbus - pin 1 to gnd) usb 2.0 eye pattern with rclamp3655p (data lines - pin 3 and 4) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 012345 reverse voltage - v r (v) c j (v r ) / c j (v r =0) f = 1mhz 0 2 4 6 8 10 12 14 16 0123456 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8s td = 20s 0 10 20 30 40 50 60 70 0123456 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8s td = 20s clamping voltage vs. peak pulse current (data lines - pins 3, 4, 5, or 6 to gnd) normalized capacitance vs. reverse voltage (data lines - pin 3, 4, 5, or 6 to gnd) 0.01 0.1 1 10 0.1 1 10 100 pulse duration - tp (us) peak pulse power - p pp (kw)
6 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p typical characteristics esd clamping (pin 3, 4, 5, or 6 to gnd) (+8kv contact per iec 61000-4-2) analog crosstalk esd clamping (pin 1 to gnd) (+8kv contact per iec 61000-4-2) insertion loss s21 (pin 3, 4, 5, or 6 to gnd) note: data is taken with a 10x attenuator note: data is taken with a 10x attenuator 1 2 3 4 5 start . 030 mhz 3 stop 000 . 000 000 mhz ch1 s21 log 6 db / ref 0 db 1: -0.1508 db 800 mhz 2: -0.1454 db 900 mhz 3: -0.2975 db 1.8 ghz 4: -0.8588 db 2.5 ghz 0 db -6 db -12 db -18 db -24 db -30 db -36 db 1 ghz 100 mhz 3 ghz 10 mhz 1 mhz start . 030 mhz 3 stop 000 . 000 000 mhz ch1 s21 log 20 db / ref 0 db
7 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p applications information figure 2 - layout examples figure 2 - layout examples figure 2 - layout examples figure 2 - layout examples figure 2 - layout examples figure 1- pin configuration device connection and layout options for protecting one usb port the rclamp3655p is optimized for use on systems that utilize the uusb interface with an additional fm radio pin. low capacitance protection is provided for the usb data (dm, dp), usb id, and fm radio pins. the maximum capacitance on these lines is <1pf for maximum signal integrity. usb data, fm radio, and id lines are connected at pins 3, 4, 5, and 6. these inputs are referenced to an internal 5 volt tvs protection device. when the voltage on these lines exceed 5 volts, the tvs will conduct. pin 1 is connected to the usb voltage bus (vbus). this device will conduct when the voltage on the bus exceeds 28 volts. note that there is no internal connection to the vbat pin. multiple micro vias connected to ground are recommended for best esd performance. this will reduce parasitic inductance in the ground path and minimize the clamping voltage seen by the protected device. the package is designed for easy trace routing as shown in the figure 2 examples. the top example is preferred as it utilizes an extended ground connection using multiple micro vias. note that it is not necessary to connect both ground pins of the device as both are connected internally. in this example, the vbat pin is routed on a separate layer. the vbus pin is connected to the voltage layer of the pcb with a micro via. if connection to the vbat pin is required, the bottom layout can be used. this example utilizes one via to ground due to space constraints. gnd gnd vbus vbat data - data + id fm radio 1
8 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p applications information - spice model rclamp3655p spice model d3 d4 d2 d1 i/o vbus s r e t e m a r a p e c i p s p 5 5 6 3 p m a l c r r e t e m a r a pt i n u1 d2 d3 d4 d s ip m a0 2 - e 10 2 - e 12 1 - e 22 1 - e 3 9 . 2 v bt l o v0 0 10 0 12 . 85 3 j vt l o v3 8 . 03 8 . 06 . 04 6 . 0 s rm h o5 . 16 . 02 . 03 1 . 4 v b ip m a3 - e 13 - e 13 - e 13 - e 1 o j cd a r a f2 1 - e 5 2 . 02 1 - e 5 2 . 02 1 - e 6 52 1 - e 5 2 t tc e s9 - e 1 4 5 . 29 - e 1 4 5 . 29 - e 1 4 5 . 29 - e 1 4 5 . 2 m- -1 0 . 01 0 . 03 2 . 02 3 . 0 n- -1 . 11 . 11 . 11 . 1 g ev e1 1 . 11 1 . 11 1 . 11 1 . 1
9 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p outline drawing - slp3313p6 land pattern - slp3313p6 b bbb aaa n l1 e d dim a1 a2 a 0.30 0.20 0.25 0.67 0.54 0.08 0.10 6 0.62 3.30 0.50 bsc millimeters max 0.05 0.55 dimensions min 0.00 nom 0.45 0.02 (0.13) 0.50 controlling dimensions are in millimeters (angles in degrees). coplanarity applies to the exposed pad as well as the terminals. notes: 2. 1. 1.30 e 3.38 3.25 1.25 1.38 d a b pin 1 indicator (laser mark) a2 aaa c a1 e e/2 e bbb c a b c seating plane e1 e1 1.25 bsc l 0.30 0.38 0.43 lxn e/2 a 6 1 87 bx8 l1x2 d/2 e1/2 y z p/2 p (c) p1/2 y1 p1 1. controlling dimensions are in millimeters (angles in degrees). y 0.68 p1 1.25 c (1.05) 0.25 x g this land pattern is for reference purposes only. consult your manufacturing group to ensure your notes: 2. dim x y1 p g millimeters 0.30 0.92 0.50 dimensions company's manufacturing guidelines are met. 1.85 z
10 ? 2009 semtech corp. www.semtech.com protection products rclamp3655p contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804 r e b m u n t r a p d a e l h s i n i f r e p y t q l e e r e z i s l e e r t c t . p 5 5 6 3 p m a l c re e r f b p0 0 0 , 3h c n i 7 ordering information tape and reel specification railclamp and rclamp are marks of semtech corporation device orientation in tape pin 1 in upper left towards sprocket holes marking 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 8m m 2 . 4 m m 1 . 0 + 5 . 1 ) m m 0 . 0 - m m 5 . 0 5 0 . 0 0 1 . 0 5 7 . 1 m m 5 0 . 0 5 . 3 m m m m 4 . 2 1 . 0 0 . 4 m m 1 . 0 0 . 4 m m 5 0 . 0 0 . 2 m m m m 4 . 0 m m 0 . 8 m m 3 . 0 + m m 1 . 0 - yyww = date code pin 1 location user direction of feed 0 a0 b0 k m m 0 1 . 0 - / + 1 5 . 1m m 0 1 . 0 - / + 1 5 . 3m m 0 1 . 0 - / + 6 6 . 0 3655p yyww
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