AOZ8235 Five-line TVS Diode General Description Features The AOZ8235 is a transient voltage suppressor diode array designed to protect data lines from high transient conditions and ESD. This state-of-the-art device utilizes AOS leading edge Trench Vertical Structure [TVS]2 ™ technology for superior clamping performance. ESD protection for high-speed data lines: This device incorporates five TVS diodes in a single package. Due to the flexibility of the design, the package can be configured as a four channel bidirectional TVS array. During transient conditions, the TVS diodes direct the transient to ground. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15 kV air, ±8 kV contact discharge). The AOZ8235 comes in an RoHS compliant DFN package and is rated over a -40 °C to +85 °C ambient temperature range. – Exceeds: IEC 61000-4-2 (ESD) ±18 kV (air), ±18 kV (contact) – Human Body Model (HBM) ±30 kV Trench Vertical Structure [TVS]2 ™ based technology used to achieve excellent ESD clamping performance Small package saves board space Low insertion loss Protects five unidirectional or four bidirectional I/O lines Low clamping voltage Low operating voltage: 5.0V Green product, Pb-free Applications Portable handheld devices The very small 1.45 mm x 1.0 mm x 0.55 mm DFN package makes it ideal for applications where PCB space is a premium. The small size and high ESD protection makes it ideal for protecting high speed video and data communication interfaces. Keypads, data lines Notebook computers Digital cameras Portable GPS MP3 players Typical Applications Pin Configuration I/O1 I/O2 I/O3 I/O4 I/O5 CH1 1 6 CH5 VN 2 5 CH4 CH2 3 4 CH3 Unidirection Protection of Five Lines I/O1 I/O2 Top View I/O3 I/O4 Bidirection Protection of Four Lines Rev. 1.3 December 2012 www.aosmd.com Page 1 of 6 AOZ8235 Ordering Information Part Number Ambient Temperature Range Package Environmental AOZ8235DI-05 -40 °C to +85 °C DFN 1.45 x 1.0 Green Product RoHS Compliant AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information. Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Rating VP – VN 5V Peak Pulse Current (IPP), tP = 8/20 µs 4A Storage Temperature (TS) -65 °C to +150 °C ESD Rating per IEC61000-4-2, Contact ±18 kV Air(1) ±18 kV Model(2) ±30 kV ESD Rating per IEC61000-4-2, ESD Rating per Human Body (1) Notes: 1. IEC 61000-4-2 discharge with CDischarge = 150 pF, RDischarge = 330 Ω. 2. Human Body Discharge per MIL-STD-883, Method 3015 CDischarge = 100 pF, RDischarge = 1.5 kΩ. Maximum Operating Ratings Parameter Rating Junction Temperature (TJ) -40 °C to +125 °C Electrical Characteristics TA = 25°C unless otherwise specified. Symbol VRWM VBR Parameter Reverse Working Voltage Conditions Min. Between pin 5 and 2(3) 2(4) Reverse Breakdown Voltage IT = 1 mA, between pins 5 and IR Reverse Leakage Current VRWM = 5 V, between pins 5 and 2 VF Diode Forward Voltage IF = 15 mA VCL Channel Clamp Voltage Positive Transients Negative Transient IPP = 15 A, tp = 100 ns, any I/O pin to Ground Channel Clamp Voltage Positive Transients Negative Transient IPP = 25 A, tp = 100 ns, any I/O pin to Ground Junction Capacitance VR = 0 V, f = 1 MHz, any I/O pin to Ground Cj Typ. Max. Units 5.0 V 6.0 0.70 V 0.1 µA 1 V 12.0 -10.0 V V 15.0 -18.0 V V 16.0 pF 0.85 13.5 Notes: 3. The working peak reverse voltage, VRWM, should be equal to or greater than the DC or continuous peak operating voltage level. 4. VBR is measured at the pulse test current IT. Rev. 1.3 December 2012 www.aosmd.com Page 2 of 6 AOZ8235 Typical Performance Characteristics Clamping Voltage vs. Peak Pulse Current Clamping Voltage vs. Current 16 20 15 18 Clamping Voltage (V) Clamping Voltage, VCL (V) (tperiod = 100ns, tr = 1ns) 14 13 12 11 10 9 8 (tperiod = 100ns, tr = 1ns) 16 14 12 10 7 8 6 4 2 6 0 5 10 15 20 25 30 5 10 15 20 25 30 Current (A) Peak Pulse Current, IPP (A) Capacitance vs. Reverse Bias 16 Capacitance (pF) 14 12 10 8 6 4 2 0 0 1 2 3 4 5 Reverse Bias (Volts) Rev. 1.3 December 2012 www.aosmd.com Page 3 of 6 AOZ8235 Applications Information I/O1 Device Connection for Protection of Five Unidirectional Data Lines I/O2 I/O3 These devices are designed to protect up to five unidirectional data lines. The device is connected as follows. 1. Unidirectional protection of five I/O lines is achieved by connecting pins 1, 3, 4, 5 and 6 to the data lines. Connect pin 2 to ground. The ground connection should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. 1 4 3 5 6 I/O4 2 Circuit Diagram I/O5 Protection of Five Unidirectional Lines Device Connection for Protection of Four Bidirectional Data Lines These devices are designed to protect up to four bidirectional data lines. The device is connected as follows. 1. Bidirectional protection of four I/O lines is achieved by connecting pins 1, 3, 4, and 6 to the data lines. Connect pin 5 to ground. The ground connection should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. I/O1 I/O2 1 3 4 6 I/O3 5 Circuit Diagram Circuit Board Layout Recommendations for Suppression of ESD I/O4 Protection of Four Bidirectional Lines Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: Place the TVS near the input terminals or connectors to restrict transient coupling. Minimize the path length between the TVS and the protected line. Minimize all conductive loops including power and ground loops. The ESD transient return path to ground should be kept as short as possible. Never run critical signals near board edges. Use ground planes whenever possible. Rev. 1.3 December 2012 www.aosmd.com Page 4 of 6 AOZ8235 Package Dimensions, DFN 1.45 x 1.0, 6L e D b b1 L E 3 Pin #1 Dot by Marking TOP VIEW 2 1 e BOTTOM VIEW A c A1 Dimensions in millimeters SIDE VIEW RECOMMENDED LAND PATTERN 0.50 0.40 0.20 0.36 Symbols A A1 b b1 c D E e L Min. 0.50 0.00 0.20 Nom. 0.55 — 0.25 0.40 0.152 Ref. 1.40 1.45 0.95 1.00 0.50 BSC 0.33 0.38 Max. 0.60 0.05 0.30 1.50 1.05 0.43 Dimensions in inches Symbols A A1 b b1 c D E e L Min. 0.020 0.000 0.008 Nom. Max. 0.022 0.024 — 0.002 0.010 0.012 0.016 0.006 Ref. 0.055 0.057 0.059 0.037 0.039 0.041 0.020 BSC 0.013 0.015 0.017 1.20 0.24 0.72 0.48 UNIT: mm Rev. 1.3 December 2012 www.aosmd.com Page 5 of 6 AOZ8235 Part Marking AOZ8235DI-05 (DFN 1.45 x 1.0) C W Part Number Code Week & Year Code LEGAL DISCLAIMER Alpha and Omega Semiconductor makes no representations or warranties with respect to the accuracy or completeness of the information provided herein and takes no liabilities for the consequences of use of such information or any product described herein. Alpha and Omega Semiconductor reserves the right to make changes to such information at any time without further notice. This document does not constitute the grant of any intellectual property rights or representation of non-infringement of any third party’s intellectual property rights. LIFE SUPPORT POLICY ALPHA AND OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. Rev. 1.3 December 2012 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.aosmd.com Page 6 of 6