RCLAMP3655P Datasheet, PDF (1/10 Pages) Semtech Corporation – RailClamp ESD Protection for uUSB Interfaces

RClamp3655P
RailClamp^
PROTECTION PRODUCTS - RailClamp^
ESD Protection for uUSB Interfaces
Description
Features
RailClamp^ is a low capacitance TVS array designed to ‹ Transient protection for high-speed data lines 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
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
‹ Low leakage current
‹ Low clamping voltage
‹ Innovative package for easy pcb layout
‹ Solid-state silicon-avalanche technology
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).
Mechanical Characteristics
‹ 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
Applications
‹ uUSB Interfaces with FM radio Option
‹ USB OTG
Circuit Diagram
PIN Configuration
3
4
1
5
6
5V
28V
GND
Revision 07/15/2009
1
VBus 1
VBat
Data -
Data +
ID
FM Radio
GND
GND
SLP3313P6 (Top View)
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