MIC2582/MIC2583

Single-Channel Hot Swap Controllers

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

May 23, 2014

Revision 5.0

General Description

The MIC2582 and MIC2583 are single-channel positive

voltage hot swap controllers designed to allow the safe

insertion of boards into live system backplanes. The

MIC2582 and MIC2583 are available in 8-pin SOIC and

16-pin QSOP packages, respectively. Using a few external

components and by controlling the gate drive of an

external N-Channel MOSFET device, the MIC2582/83

provide inrush current limiting and output voltage slew rate

control in harsh, critical power supply environments.

Additionally, a circuit breaker function will latch the output

MOSFET off if the current-limit threshold is exceeded for a

determined period. The MIC2583R option includes an

auto-restart function upon detecting an over current

condition.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Features

 MIC2582: Pin-for-pin functional equivalent to the

LTC1422

 2.3V to 13.2V supply voltage operation

 Surge voltage protection up to 20V

 Current regulation limits inrush current regardless of

load capacitance

 Programmable inrush current limiting

 Electronic circuit breaker

 Optional dual-level overcurrent threshold detects

excessive load faults

 Fast response to short-circuit conditions (<1µs)

 Programmable output under-voltage detection

 Undervoltage Lockout (UVLO) protection

 Auto-restart function (MIC2583R)

 Power-on-Reset (POR) status output

 Power good (PG) status output (MIC2583 and

MIC2583R)

 /FAULT status output (MIC2583 and MIC2583R)

Applications

 RAID systems

 Base stations

 PC board hot swap insertion and removal

 +12V backplanes

 Network switches

Typical Application