UCC2913

UCC2913图片1
UCC2913概述

负浮动单路热插拔 IC 工业温度 范围

The UCCx913 family of negative voltage circuit breakers provides complete power management, hot-swap, and fault handling capability. The device is referenced to the negative input voltage and is driven through an external resistor connected to ground, which is essentially a current drive as opposed to the traditional voltage drive. The on-board 10-V shunt regulator protects the device from excess voltage and serves as a reference for programming the maximum allowable output sourcing current during a fault. In the event of a constant fault, the internal timer limits the on-time from less than 0.1% to a maximum of 3%. The duty cycle modulates depending on the current into the PL pin, which is a function of the voltage across the FET, and limits average power dissipation in the FET. The fault level is fixed at 50 mV across the current-sense resistor to minimize total dropout. The fault current level is set with an external current sense resistor. The maximum allowable sourcing current is programmed with a voltage divider from VDD to generate a fixed voltage on the IMAX pin. The current level, when the output appears as a current source, is equal to VIMAX/RSENSE. If desired, a controlled current startup can be programmed with a capacitor on the IMAX pin.

When the output current is below the fault level, the output device is switched on. When the output current exceeds the fault level, but is less than the maximum sourcing level programmed by the IMAX pin, the output remains switched on, and the fault timer starts charging CT. Once CT charges to 2.5 V, the output device is turned off and performs a retry some time later. When the output current reaches the maximum sourcing current level, the output appears as a current source, limiting the output current to the set value defined by IMAX.

Other features of the UCCx913 family include undervoltage lockout, and 8-pin small outline SOIC and dual-in-line DIP packages.

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Precision Fault Threshold
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Programmable Average Power Limiting
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Programmable Linear Current Control
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Programmable Overcurrent Limit
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Programmable Fault Time
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Fault Output Indicator
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Shutdown Control
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Undervoltage Lockout
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8-Pin SOIC
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APPLICA ONS
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–48-V Distributed Power Systems
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Central Office Switching
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Wireless Base Stations
UCC2913中文资料参数规格
其他

产品生命周期 正在供货

符合标准

RoHS标准 RoHS Compliant

含铅标准 Lead Free

数据手册

在线购买UCC2913
型号: UCC2913
制造商: TI 德州仪器
描述:负浮动单路热插拔 IC 工业温度 范围
替代型号UCC2913
型号/品牌 代替类型 替代型号对比

UCC2913

TI 德州仪器

当前型号

当前型号

UCC3913

德州仪器

功能相似

UCC2913和UCC3913的区别

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