7 Detailed Description

7.1 Overview

The ESD752 and ESD7x2 are dual-channel ESD TVS diodes in SOT-23 and SOT-323 (SC-70) leaded packages

which are convenient for automatic optical inspection. This product offers IEC 61000-4-2 ±30-kV or ±20-kV

air-gap, ±30-kV or ±20-kV contact ESD protection respectively, and has a clamp circuit with a back-to-back TVS

diode for bidirectional signal support.

A typical application of this product is the ESD protection for USB-PD slower speed signals (CC1, CC2, SBU1,

protecting VBUS. The ESD752 device is also a good fit for protecting industrial IOs requiring 5.7 A or less of

surge current protection. The 3 pF or 1.7 pF line capacitance of these ESD protection diodes are suitable for

USB-PD slower speed signals and industrial IO applications.

7.2 Functional Block Diagram

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1

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7.3 Feature Description

The ESD752 and ESD7x2 are bidirectional TVS diodes with a high ESD protection level. This device protects

the circuit from ESD strikes up to ±30-kV or ±20-kV contact and ±30-kV or ±20-kV air-gap respectively as

specified in the IEC 61000-4-2 standard. The ESD752 and ESD7x2 can also handle up to 5.7 A or 1.5 A of

surge current (IEC 61000-4-5 8/20 µs) respectively. The I/O capacitance of 3 pF or 1.7 pF are suitable for

USB power delivery slower speed signals and industrial applications. These clamping devices have a small

dynamic resistance, which makes the clamping voltage low when the device is actively protecting other circuits.

For example, the ESD752 clamping voltage is only 37 V when the device is taking 5.7 A transient current.

The breakdown is bidirectional so these protection devices are a good fit for applications requiring postive and

The temperature range of −55°C to +150°C makes this ESD device work at extensive temperatures in most

environments. The leaded SOT-23 and SOT-323 (SC-70) packages are good for applications requiring automatic

optical inspection (AOI).

7.3.1 Temperature Range

These devices are qualified to operate from –55°C to +150°C.

7.3.2 IEC 61000-4-5 Surge Protection

The IO pins can withstand surge events up to 5.7 A and 1.5 A (8/20 µs waveform) for the ESD752 and ESD7x2

respectively. An ESD-surge clamp diverts this current to ground.

7.3.3 IO Capacitance

The capacitance between the I/O pins is 3 pF and 1.7 pF for the ESD752 and ESD7x2 respectively. These

capacitances are suitable for USB power delivery slower speed signals and industrial applications.

ESD752

SLVSGX0A – MAY 2022 – REVISED AUGUST 2022

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