MIC2587 1YM Micrel Semiconductor, MIC2587 1YM Datasheet

MIC2587 1YM

Manufacturer Part Number

MIC2587 1YM

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC2587_1YM.pdf (16 pages)

Specifications of MIC2587 1YM

Case

SOP8

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General 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

programmable overcurrent filter.

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.

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.

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.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Ordering Information

Power, Connect, and Protect is a trademark of Micrel Inc.

October 2004

MIC2587R-1BM

MIC2587R-2BM

MIC2587-1BM

MIC2587-2BM

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax +1 (408) 474-1000 • http://www.micrel.com

Standard

current

Part Number

limit

MIC2587R-1YM

MIC2587R-2YM

MIC2587-1YM

MIC2587-2YM

Pb-Free

circuitry

The MIC2587R provides a

These protection circuits

equipped

PWRGD Polarity

Active- HIGH

Active-HIGH

Active-LOW

Each device

with

Circuit Breaker Function

Features

• MIC2587: Pin-for-pin functional equivalent to the LT1641

• Operates from +10V to +80V with 100V ABS MAX operation

• Industrial temperature specifications at V

• Programmable current limit with analog foldback

• Active current regulation minimizes inrush current

• Electronic circuit breaker for overcurrent fault protection

• Fast responding circuit breaker (< 2µs) to short circuit loads

• Programmable input undervoltage lockout

• Fault Reporting:

Applications

• General-purpose hot board insertion

• High-voltage, high-side electronic circuit breaker

• +12V/+24V/+48V Distributed Power Systems

• +24V/+48V Industrial/Alarm Systems

• Telecom Systems

• Medical Systems

- Output latch off (MIC2587) or

- Output auto-retry (MIC2587R)

Open-drain “Power-is-Good” output for enabling DC/DC

converter(s)

- Active-HIGH:

- Active-LOW:

Auto-retry

Latched

Single-Channel, Positive High-Voltage

= +48V

MIC2587/MIC2587R

Hot Swap Controller

MIC2587-1/MIC2587R-1

MIC2587-2/MIC2587R-2

8 pin SOIC

Package

= +24V and

(408) 955-1690

M9999-102204

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