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MIC2595R-1BM 参数 Datasheet PDF下载

MIC2595R-1BM图片预览
型号: MIC2595R-1BM
PDF下载: 下载PDF文件 查看货源
内容描述: 单通道,负高压热插拔电源控制器/定序 [Single-Channel, Negative High-Voltage Hot Swap Power Controller/Sequencer]
分类和应用: 电源电路电源管理电路光电二极管信息通信管理高压控制器
文件页数/大小: 29 页 / 3984 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC2589/MIC2595
Single-Channel, Negative High-Voltage Hot
Swap Power Controller/Sequencer
General Description
The MIC2589 and MIC2595 are single-channel,
negative voltage hot swap controllers designed to
address the need for safe insertion and removal of
circuit boards into “live” system backplanes, while using
few external components. The MIC2589/MIC2589R and
the MIC2595/MIC2595R are each available in 14-pin
SOIC packaging and work in conjunction with an
external N-Channel MOSFET for which the gate drive is
controlled to provide inrush current limiting and output
voltage slew-rate control. Overcurrent fault protection is
also provided via a programmable overcurrent threshold
and filter. Very fast fault response is provided to ensure
that system power supplies maintain regulation even
during output short circuits. These controllers offer two
responses to a circuit breaker fault condition: the
MIC2589 and MIC2595 latch the circuit breaker’s output
off when the overcurrent threshold interval is exceeded
and the overcurrent filter times out while the MIC2589R
and MIC2595R automatically attempt to restart at a fixed
duty cycle after a current limit fault. A primary Power-
Good signal and two secondary (delayed and
staggered) Power-Good signals are provided to indicate
that the output voltage is within its valid operating range.
These signals can be used to perform an all-at-once or
a sequenced enabling of one or more DC-DC power
modules.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Features
Provides safe insertion and removal from live –48V
(nominal) backplanes
Operates from –19V to –80V
Fast responding circuit breaker (<1µs) to short circuit
conditions
User-programmable overcurrent detector response
time
Electronic circuit breaker function:
Output latch OFF (MIC2589/MIC2595)
Output auto-retry (MIC2589R/MIC2595R)
Active current regulation to control inrush currents
Programmable undervoltage and overvoltage
lockouts (MIC2589/MIC2589R)
Programmable UVLO hysteresis
(MIC2595/MIC2595R)
Staggered ‘Power-Good’ output signals provide load
sequencing
Active-HIGH (-1)
Active-LOW (-2)
Applications
Central office switching
–48V power distribution
Distributed power systems
AdvancedTCA
_________________________________________________________________________________________________________
Ordering Information
Part Number
Standard
MIC2589-1BM
MIC2589-2BM
MIC2589R-1BM
MIC2589R-2BM
MIC2595-1BM
MIC2595-2BM
MIC2595R-1BM
MIC2595R-2BM
Pb-Free
MIC2589-1YM
MIC2589-2YM
MIC2589R-1YM
MIC2589R-2YM
MIC2595-1YM
MIC2595-2YM
MIC2595R-1YM
MIC2595R-2YM
PWRGD
Polarity
Active-High
Active-Low
Active-High
Active-Low
Active-High
Active-Low
Active-High
Active-Low
Lockout Functions
Programmable UVLO & OVLO
Programmable UVLO & OVLO
Programmable UVLO & OVLO
Programmable UVLO & OVLO
Programmable UVLO Hysteresis
Programmable UVLO Hysteresis
Programmable UVLO Hysteresis
Programmable UVLO Hysteresis
Circuit Breaker
Function
Latched Off
Latched Off
Auto Retry
Auto Retry
Latched Off
Latched Off
Auto Retry
Auto Retry
Package
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
December 2005
M9999-120505
(408) 955-1690