參數(shù)資料
型號(hào): MIC2587R-2BM TR
廠商: Micrel Inc
文件頁(yè)數(shù): 3/22頁(yè)
文件大?。?/td> 972K
描述: IC CTRLR HOT SWAP POS HV 8-SOIC
標(biāo)準(zhǔn)包裝: 2,500
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 10 V ~ 80 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
其它名稱: MIC2587R-2BMTR
MIC2587R-2BMTR-ND
icrel, Inc.
MIC2587/MIC2587R
 
 
anuary 24, 2013
3
Revision 2.0
 
Ordering Information
Part Number
PWRGD Polarity
Circuit Breaker Function
Package
Finish
MIC2587-1YM
Active-HIGH
Latched
8-Pin SOIC
Pb-Free
MIC2587-2YM
Active-LOW
Latched
8-Pin SOIC
Pb-Free
MIC2587R-1YM
Active- HIGH
Auto-retry
8-Pin SOIC
Pb-Free
MIC2587R-2YM
Active-LOW
Auto-retry
8-Pin SOIC
Pb-Free
 
Pin Configuration
 
8-pin SOIC (M)
MIC2587-1YM
MIC2587R-1YM
 
(Top View)
8-pin SOIC (M)
MIC2587-2YM
MIC2587R-2YM
 
(Top View) 
 
Pin Description
Pin Number
Pin Name
Pin Function
1
ON
Enable Input: When the voltage at the ON pin is higher than the V
ONH
 threshold, a start cycle is
initiated. An internal current source (I
GATEON
) is activated which charges the GATE pin, ramping
up the voltage at this pin to turn on an external MOSFET. Whenever the voltage at the ON pin is
lower than the V
ONL
 threshold, an undervoltage lockout condition is detected and the I
GATEON
 
current source is disabled while the GATE pin is pulled low by I
GATEOFF
. After a load current fault,
toggling the ON pin LOW then back HIGH will reset the circuit breaker and initiate another start
cycle.
2
FB
Output Voltage Feedback Input: This pin is connected to an external resistor divider that is used
to sample the output load voltage. The voltage at this pin is measured against an internal
comparator whose output controls the PWRGD (or /PWRGD) signal. PWRGD (or /PWRGD)
asserts when the FB pin voltage crosses the V
FBH
 threshold. When the FB pin voltage is lower
than its V
FBL
 threshold, PWRGD (or /PWRGD) is de-asserted. The FB comparator exhibits a
typical hysteresis of 80mV.
The FB pin voltage also affects the MIC2587/MIC2587Rs foldback current limit operation (see
the Functional Description section for further information).
 
 
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