TVS1801屬于電路保護(hù)的電涌抑制IC。由美國德州儀器公司制造生產(chǎn)的TVS1801電涌抑制 IC電涌抑制 IC 可用于為電氣設(shè)備提供過壓和/或過流保護(hù)。該系列中的元器件采用半導(dǎo)體材料設(shè)計。特征包括鉗位電壓、技術(shù)、電路數(shù)、應(yīng)用和安裝類型。技術(shù)是外部或內(nèi)部開關(guān)，電路數(shù)為 1、2、3 或 4。目標(biāo)應(yīng)用是汽車、以太網(wǎng)、通用、便攜式設(shè)備、SLIC、USB、USB OTG 等。

1 Features

1? Protection Against 1-kV, 42-Ω IEC 61000-4-5

Surge Test for Industrial Signal Lines

? Bidirectional Polarity Enables Protection Against

Bipolar Signaling or Miswiring Conditions

? Clamping Voltage of 34 V at 27-A, 8/20-μs Surge

Current

? Standoff Voltage: ±27 V

? Small 3 mm × 3 mm2 SON Footprint

? Survives Over 5,000 Repetitive Strikes of 27-A

8/20-μs Surge Current at 125°C

? Robust Surge Protection

– IEC61000-4-5 (8/20 μs): 27 A

– IEC61643-321 (10/1000 μs): 3.5 A

? Low Leakage Current

– 0.8-nA Typical at 27°C

– 400-nA Maximum at 85°C

? Low Capacitance: 57 pF

? Integrated Level 4 IEC 61000-4-2 ESD Protection

2 Applications

? Industrial Sensor I/O

? PLC I/O Modules

? Analog Inputs

? Appliances

? Medical Equipment

? Building Automation

3 Description

The TVS2701 device shunts up to 27 A of IEC

61000-4-5 fault current to protect systems from highpower

transients or lightning strikes. The device

survives the common industrial signal line EMC

requirement of 1-kV IEC 61000-4-5 open circuit

voltage coupled through a 42-Ω impedance. The

TVS2701 uses a feedback mechanism to ensure

precise flat clamping during a fault, keeping system

exposure lower than traditional TVS diodes. The tight

voltage regulation allows designers to confidently

select system components with a lower voltage

tolerance, lowering system costs and complexity

without sacrificing robustness. The TVS2701 has a

±27-V operating range to enable operation in systems

that require protection against reverse wiring

conditions.

In addition, the TVS2701 is available in a small SON

footprint designed for space constrained applications,

offering a significant size reduction compared to

standard SMA and SMB packages. Low device

leakage and capacitance ensure a minimal effect on

the protected line. To ensure robust protection over

the lifetime of the product, TI tests the TVS2701

against 5000 repetitive surge strikes at 125°C with no

shift in device performance.

The TVS2701 is part of TI's Flat-Clamp family of

surge devices. For a deeper look at the Flat-Clamp

family, refer to the Flat-Clamp Surge Protection

Technology for Efficient System Protection white

paper.