1
www.semtech.com
RClamp3654PA
RailClamp
®®
®®
®
Low Capacitance TVS Array
PROTECTION PRODUCTS - RailClamp
®®
®®
®
Description
Features
Circuit Diagram PIN Configuration
Revision 04/19/2010
RailClamp
®
TVS arrays are ultra low capacitance ESD
protection devices designed to protect high speed data
interfaces. This series has been specifically designed to
protect sensitive components which are connected to
high-speed data and transmission lines from overvolt-
age caused by ESD (electrostatic discharge), CDE
(Cable Discharge Events), and EFT (electrical fast
transients).
The RClamp
®
3654PA is specifically designed to protect
portable devices that utilize the USB port for battery
charging. The unique design of this device features low
capacitance TVS diodes for protection of the USB data
(DP, DM) and USB ID (accessory detect) 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. Leakage current of
the VBus protection is <100nA when operating at 28
volts.
The RClamp3654PA is in a 6-pin SLP1616P6 package.
It measures 1.6 x 1.6 x 0.60mm. 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
USB 2.0
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 (1.6 x 1.6mm) saves board space
Protects USB DP, DM, and ID Pin operating up to
5.5V
Protects USB VBus operating up to 28V
Low capacitance (<1pF) on DP, DM, and ID Pins
No insertion loss to
2.0GHz2.0GHz
2.0GHz2.0GHz
2.0GHz
Low leakage current
Low clamping voltage
Large ground pad for increased ESD performance
Solid-state silicon-avalanche technology
SLP1616P6 6L package
Pb-Free, Halogen Free, RoHS/WEEE Compliant
Nominal Dimensions: 1.6 x 1.6 x 0.60 mm
Lead Finish: NiPdAu
Molding compound flammability rating: UL 94V-0
Marking : Marking code + two character date code
Packaging : Tape and Reel
SLP1616P6 (Top View)
1
Gnd
2
3
6
5
4
USB ID
DM
DP
NC
VBus
NC
12 3
GND
6
5.5V
28V
