描述 Description

The MIC2587 and MIC2587R are single-channel positive voltage hot swap controllers designed to provide safe insertion and removal of boards for systems that require live (always-powered) backplanes. These devices use few external components and act as controllers for external N-channel power MOSFET devices to provide inrush current control and output voltage slew rate control. Overcurrent fault protection is provided via programmable analog foldback current limit circuitry equipped with a programmable overcurrent filter. These protection circuits combine to limit the power dissipation of the external MOSFET to insure that the MOSFET is in its SOA during fault conditions. The MIC2587 provides a circuit breaker function that latches the output MOSFET off if the load current exceeds the current limit threshold for the duration of the programmable timer. The MIC2587R provides a circuit breaker function that automatically attempts to restart power after a load current fault at a low duty cycle to prevent the MOSFET from overheating. Each device provides either an active-HIGH (-1BM) or an active-LOW (-2BM) \"Power-is-Good\" signal to indicate that the output load voltage is within tolerance.

特性 Features

? MIC2587: Pin-for-pin functional equivalent to the LT1641
? Operates from +10V to +80V with 100V ABS MAX operation
? Industrial temperature specifications at VCC?= +24V and VCC?= +48V
? Programmable current limit with analog foldback
? Active current regulation minimizes inrush current
? Output latch off (MIC2587) or
? Output auto-retry (MIC2587R)
? Fast responding circuit breaker (

簡(jiǎn)介

MIC2587屬于集成電路（IC）的熱插拔控制器。由制造生產(chǎn)的MIC2587熱插拔控制器PMIC - 熱插拔控制器是能提供電路內(nèi)保護(hù)和控制功能的半導(dǎo)體，可允許帶電情況下在電路中插入或拔除其他組件。熱插拔控制器可用于計(jì)算機(jī)網(wǎng)絡(luò)和通用電源系統(tǒng)，主要根據(jù)輸出電流、受控通道數(shù)量等特性，以及自動(dòng)重試、故障超時(shí)和保護(hù)等特殊功能進(jìn)行區(qū)分。