产品概述
描述
The PCLT-2A is a dual input current limiter device designed for 24 V DC automation applications.
This product is compatible with the type 2 (7.5 mA) or type 3 (3 mA) characteristic of the IEC 61131-2 standard. An internal resistance RREFallows the limiting current value to be adjusted from 3 to 7.5 mA.
Each input voltage clamping block protects the module input against electromagnetic interference such as those described in the IEC 61131-2 standard, IEC 61000-4-2 (ESD), 4-4 (transient burst), 4-5 (voltage surge) and 4-6 (conducted radio frequency interference) standards. The supply input is also designed with such a protection structure.
The low tolerance of the current limitation allows a drastic reduction in the dissipation of the input compared to a resistive input. The PCLT2 is packaged in TSSOP14 - a very low RTHexposed pad package that allows the PCB cooling pad to be reduced.
The output block of each termination channel transfers the input logic state to a logic output and a light emitting diode (LED).
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所有功能
- 2 channel topology: low side input with common ground
- Wide range input DC voltage:
- VI= - 0.3 to 30 V with RI= 0 Ω
- VI= - 30 to 35 V with RI= 750 Ω
- Current limiter:
- 3 to 7.5 mA programmable reference
- ILIM= 6.1 mA to 8.8 mA with RREF= 10 kΩ
- ILIM= 2.8 mA to 4.3 mA with RREF= 22 kΩ
- Narrow limiter spread: < 17%
- Temperature compensated operation
- Output drive:
- No output activation below 2 mA input
- 1.5 mA minimum output activating current in opto-coupler mode
- Programmable CMOS output mode option (VMOD> 2.9 V)
- LED drive for sensor status: 4.4 mA typical with RREF= 10 kΩ
- Input protection (RI= 750 Ω CIN= 22 nF)
- IEC 61000-4-2 ESD, Level 4
- In contact, ± 8 kV; in air, ± 15 kV
- Criteria B: temporary disruption
- IEC 61000-4-5 voltage surge, Level 3
- ± 500 V with 42 Ω series resistor in differential mode
- Criteria B: temporary disruption
- IEC 61000-4-4 transient burst immunity
- ± 4 kV peak voltage; 5 kHz repetitive rate
- Criteria A: fully functional
- IEC 61000-4-6 conducted RFI
- 10 VRMS
- Criteria A: fully functional
- Input protection against -30 V reverse polarity
- Ambient temperature: -25 to 85 °C
- Benefits
- Enable input to meet type1, 2 and 3 characteristics of IEC 61131-2 standard
- Compatible operation with 2 and 3 wires proximity sensor according EN60947-5-2 standard
- Flexible configuration driving either opto- coupler, or CMOS bus controller input, or 12 V AS-Interface network
- Reduced overall dissipation
- Enhanced functional reliability
- Compact with high integration
- Surface mount package for highly automated assembly
- Insensitive to the on-state sensor impedance
电路原理图
EDA符号、封装和3D模型
STMicroelectronics - PCLT-2A
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符号
封装
3D模型
全部资源
| 资源标题 | 版本 | Latest update |
|---|
CAD Symbol & Footprint models (2)
| 资源标题 | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 21 Jun 2021 | 21 Jun 2021 | |
| ZIP | 1.2 | 18 Mar 2020 | 18 Mar 2020 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| PCLT-2AT4 | 批量生产 | TSSOP-14 | 工业 | Ecopack2 | |
| PCLT-2AT4-TR | 批量生产 | TSSOP-14 | 工业 | Ecopack2 | |
PCLT-2AT4
Package:
TSSOP-14Material Declaration**:
PCLT-2AT4-TR
Package:
TSSOP-14Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | 封装 | 包装类型 | 温度（ºC） | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | ||||||||||
| PCLT-2AT4-TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | TSSOP-14 | Tape and Reel | - | - | EAR99 | PHILIPPINES | | ||
| PCLT-2AT4 | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | TSSOP-14 | Tube | - | - | EAR99 | PHILIPPINES | | ||