UM8511 Datasheet, PDF (1/7 Pages) Union Semiconductor, Inc. – 8 Line ESD/EMI Protections for Color LCD Interfaces

UM8511
8 Line ESD/EMI Protections for Color LCD Interfaces
UM8511 DFN16 3.3×1.3
General Description
The UM8511 is a (L-C) low pass filter array with integrated TVS diodes. It is designed to suppress
unwanted EMI signals and provide electrostatic discharge (ESD) protection in portable electronic
equipment. This device utilizes solid-state silicon-avalanche technology for superior clamping
performance and DC electrical characteristics. They have been optimized for protection of color LCD
and camera lines in cellular phones and other portable electronics.
The device consists of eight identical circuits comprised of TVS diodes for ESD protection, and a
C-L-C network for EMI filtering. A typical inductor value of 17nH and a capacitor value of 12pF are
used to achieve 19dB minimum attenuation from 800MHz to 2.7GHz. The TVS diodes provide
effective suppression of ESD voltages in excess of ±15kV (air discharge) and ±8kV (contact discharge)
per IEC 61000-4-2, level 4.
The UM8511 is in a 16-pin, RoHS compliant, DFN16 3.3×1.3 package. It measures 3.3mm×1.3mm.
The leads are spaced at a pitch of 0.4mm and are finished with lead-free. The small package makes it
ideal for use in portable electronics such as cell phones, digital still cameras, and PDAs.
Applications
z Color LCD Protection
z Cell Phone CCD Camera Lines
z Clamshell Cell Phones
Features
z Bidirectional EMI Filter with Integrated TVS
for ESD Protection
z ESD Protection to IEC 61000-4-2 (ESD) Level
4, ±15kV (air), ±8kV (contact)
z Filter performance: 19dB minimum attenuation
from 800MHz to 2.7GHz
z TVS Working Voltage: 5V
z Inductor: 17nH (Typical)
z Capacitors: 12pF (Typical at V_R = 2.5V)
z Protection and filtering for eight lines
Pin Configurations
Top View
Fig1. Device Schematic (8X)
Fig2. XX: Week Code
UM8511
DFN16 3.3×1.3
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http://www.union-ic.com Rev.01 May.2012
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