MIC2587 _ BDTIC a Leading Distributor in China

MIC2587

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.

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
Electronic circuit breaker for overcurrent fault protection Output latch off (MIC2587) or Output auto-retry (MIC2587R)
Output latch off (MIC2587) or
Output auto-retry (MIC2587R)
Fast responding circuit breaker (< 2µs) to short circuit loads
Programmable input undervoltage lockout
Fault Reporting: Open-drain "Power-is-Good" output for enabling DC/DC converter(s) Active-HIGH: MIC2587-1/MIC2587R-1 Active-LOW: MIC2587-2/MIC2587R-2
Active-HIGH: MIC2587-1/MIC2587R-1
Active-LOW: MIC2587-2/MIC2587R-2

Parameter

Parameter Name Value	Value
Product type High Voltage (>16V)	High Voltage (>16V)
Latch off Yes	Yes
# of PWRGD 1 Active Low	1 Active Low
Foldback Current Limit Yes	Yes
Θja (C/W) 160	160

Documents

MIC2587/MIC2587R - Single-Channel, Positive High-Voltage Hot Swap Controller	Data Sheets	11/05/2015	972KB
Micrel AN 108 - Universal Serial Bus Power Management	AppNote	10/02/2015	125KB
Micrel AN 21 - Dual Current-Limiting Switch for USB Applications	AppNote	10/01/2015	36KB

Ordering Information

Part Number	Leads	Package Type	Temp Range	Packing	1+	26+	100+	1000+	5000+
MIC2587-1YM	8	SOIC	-40C to +85C	TUBE	**	**	**	**	**
MIC2587-1YM-TR	8	SOIC	-40C to +85C	T/R	**	**	**	**	**
MIC2587-2YM	8	SOIC	-40C to +85C	TUBE	**	**	**	**	**
MIC2587R-1YM	8	SOIC	-40C to +85C	TUBE	**	**	**	**	**
MIC2587R-1YM-TR	8	SOIC	-40C to +85C	T/R	3.74	3.12	2.84	2.74	2.71
MIC2587R-2YM	8	SOIC	-40C to +85C	TUBE	**	**	**	**	**

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RoHS Information

PartNumber	DeviceWeight	ShippingWeight	LeadCount	PackageType	PackageWidth	SolderComposition	JEDECIndicator
MIC2587-1YM	0.075000	0.163265	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587-1YM-TR	0.075000	0.250000	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587-2YM	0.075000	0.163265	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587-2YM-TR	0.075000	0.250000	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587R-1YM	0.075000	0.163265	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587R-1YM-TR	0.075000	0.250000	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587R-2YM	0.075000	0.163265	8	SOIC	3.90mm(.150in)	NiPdAu	e4
MIC2587R-2YM-TR	0.075000	0.250000	8	SOIC	3.90mm(.150in)	NiPdAu	e4