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MAX4864LEUT Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX4864LEUT Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 11 page Overvoltage Protection Controllers with Reverse Polarity Protection _______________________________________________________________________________________ 9 IEC 1000-4-2 Since January 1996, all equipment manufactured and/or sold in the European Union has been required to meet the stringent IEC 1000-4-2 specification. The IEC 1000-4-2 standard covers ESD testing and perfor- mance of finished equipment. It does not specifically refer to ICs. The MAX4864L/MAX4865L/MAX4866L/ MAX4867 help users design equipment that meets Level 3 of IEC 1000-4-2, without additional ESD-protec- tion components. The main difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2. Because series resistance is lower in the IEC 1000-4-2 ESD test model (Figure 9), the ESD-withstand voltage measured to this standard is gen- erally lower than that measured using the Human Body Model. Figure 10 shows the current waveform for the ±8kV IEC 1000-4-2 Level 4 ESD Contact Discharge test. The Air-Gap test involves approaching the device with a charger probe. The Contact Discharge method connects the probe to the device before the probe is energized. Chip Information PROCESS: BiCMOS CHARGE-CURRENT LIMIT RESISTOR DISCHARGE RESISTANCE STORAGE CAPACITOR Cs 100pF RC 1M Ω RD 1.5k Ω HIGH- VOLTAGE DC SOURCE DEVICE UNDER TEST Figure 7. Human Body ESD Test Model IP 100% 90% 36.8% tRI TIME tDL CURRENT WAVEFORM PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Ir 10% 0 0 AMPERES Figure 8. Human Body Current Waveform tR = 0.7ns TO 1ns 30ns 60ns t 100% 90% 10% I Figure 10. IEC 1000-4-2 ESD Generator Current Waveform CHARGE-CURRENT LIMIT RESISTOR DISCHARGE RESISTANCE STORAGE CAPACITOR Cs 150pF RC 50M Ω TO 100MΩ RD 330 Ω HIGH- VOLTAGE DC SOURCE DEVICE UNDER TEST Figure 9. IEC 1000-4-2 ESD Test Model |
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