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
2.0GHz2.0GHz
2.0GHz2.0GHz
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
22009 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
RClamp3655P
Absolute Maximum Rating
gnitaRlobmySeulaVstinU
)6,5,4,3sniP(oidaRMF,DIBSU,MD,PD)6,5,4,3sniP(oidaRMF,DIBSU,MD,PD
)6,5,4,3sniP(oidaRMF,DIBSU,MD,PD
)6,5,4,3sniP(oidaRMF,DIBSU,MD,PD)6,5,4,3sniP(oidaRMF,DIBSU,MD,PD
)sµ02/8=pt(rewoPesluPkaePP
kp
57sttaW
)sµ02/8=pt(tnerruCesluPkaePI
PP
5A
)riA(2-4-00016CEIrepDSE
)tcatnoC(2-4-00016CEIrepDSE
V
DSE
81±
21±
Vk
erutarepmeTgnitarepOT
J
521+ot55-C°
erutarepmeTegarotST
GTS
051+ot55-C°
)1niP(suBV)1niP(suBV
)1niP(suBV
)1niP(suBV)1niP(suBV
)sµ02/8=pt(rewoPesluPkaePP
kp
053sttaW
)sµ02/8=pt(tnerruCesluPkaePI
PP
4A
)riA(2-4-00016CEIrepDSE
)tcatnoC(2-4-00016CEIrepDSE
V
DSE
81±
21±
Vk
erutarepmeTgnitarepOT
J
521+ot55-C°
erutarepmeTegarotST
GTS
051+ot55-C°