MIC2583R-JBQS Micrel Inc, MIC2583R-JBQS Datasheet

IC CTRLR HOT SWAP 100MV 16-QSOP

MIC2583R-JBQS

Manufacturer Part Number
MIC2583R-JBQS
Description
IC CTRLR HOT SWAP 100MV 16-QSOP
Manufacturer
Micrel Inc
Type
Hot-Swap Controllerr
Datasheet

Specifications of MIC2583R-JBQS

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
2.3 V ~ 13.2 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SSOP (0.150", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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 can be found on
Micrel’s web site at www.micrel.com.
___________________________________________________________________________________________________________
Typical Applications
April 2009
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
Figure 1. MIC2583/83R Typical Application Circuit
Features
• MIC2582:
• 2.3V to 13.2V supply voltage operation
• Surge voltage protection up to 20V
• Current regulation limits inrush current regardless of load
• Programmable inrush current limiting
• Electronic circuit breaker
• Optional dual-level overcurrent threshold detects
• Fast response to short circuit conditions (<1µs)
• Programmable output under-voltage detection
• Under-voltage Lockout (UVLO) protection
• Auto-restart function (MIC2583R)
• Power-On Reset and Power-Good status outputs
• /FAULT status output (MIC2583 and MIC2583R)
Applications
• RAID systems
• Base stations
• PC board hot swap insertion and removal
• +12V backplanes
• Network switches
408
Pin-for-pin functional equivalent to the LTC1422
capacitance
excessive load faults
(Power-Good for the MIC2583 and MIC2583R only)
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Single Channel Hot Swap Controllers
MIC2582/MIC2583
M9999-043009-C

Related parts for MIC2583R-JBQS

MIC2583R-JBQS Summary of contents

Page 1

... Programmable output under-voltage detection • Under-voltage Lockout (UVLO) protection • Auto-restart function (MIC2583R) • Power-On Reset and Power-Good status outputs (Power-Good for the MIC2583 and MIC2583R only) • /FAULT status output (MIC2583 and MIC2583R) Applications • RAID systems • Base stations • ...

Page 2

... Micrel, Inc. Ordering Information Part Number Standard Pb-Free MIC2582-JBM MIC2582-xYM MIC2583-xBQS MIC2583-xYQS MIC2583R-xBQS MIC2583R-xYQS Note: * Contact factory for availability. Pin Configuration 8-Pin SOIC (M) April 2009 Fast Circuit Breaker Threshold 100mV x = J1, Off Off 100mV x = K*, 150mV x = L*, 200mV x = M*, Off 100mV ...

Page 3

Micrel, Inc. Pin Description Pin Number Pin Number 8-Pin SOIC 16-Pin QSOP April 2009 Pin Name Pin Name /POR Power-On Reset Output: Open ...

Page 4

Micrel, Inc. Pin Number Pin Number 8-Pin SOIC 16-Pin QSOP n/a 2 n/a 5 n/a 11 n April 2009 Pin Name Pin Name PWRGD Power-Good Output: Open drain N-channel device, Active High. When the voltage ...

Page 5

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V )....................................... –0.3V to 20V CC /POR, /FAULT, PWRGD pins.......................... –0.3V to 15V SENSE pin ............................................ –0. pin ............................................ –0. GATE pin ..................................................... –0.3V to 20V FB Input ...

Page 6

... ON Pin Threshold Line Regulation Pin Input Current ON V Start-Up Delay Timer Threshold START V Auto-Restart Threshold Voltage AUTO (MIC2583R only) I Auto-Restart Current AUTO (MIC2583R only) V Power-Good Threshold Voltage Hysteresis FBHYS I FB Pin Leakage Current FBLKG V /POR, /FAULT, PWRGD OL Output Voltage (/FAULT, PWRGD MIC2583/83R only) ...

Page 7

Micrel, Inc. Test Circuit April 2009 Figure 5. Applications Test Circuit (not all pins shown for simplicity) 7 MIC2582/MIC2583 M9999-043009-C ...

Page 8

Micrel, Inc. Typical Characteristics April 2009 8 MIC2582/MIC2583 M9999-043009-C ...

Page 9

Micrel, Inc. April 2009 9 MIC2582/MIC2583 M9999-043009-C ...

Page 10

Micrel, Inc. Functional Characteristics April 2009 (See Figure 5, Applications Test Circuit) 10 MIC2582/MIC2583 M9999-043009-C ...

Page 11

Micrel, Inc. Functional Characteristics April 2009 (See Figure 5, Applications Test Circuit) 11 MIC2582/MIC2583 M9999-043009-C ...

Page 12

Micrel, Inc. Functional Diagram April 2009 12 MIC2582/MIC2583 M9999-043009-C ...

Page 13

Micrel, Inc. Functional Description Hot Swap Insertion When circuit boards are inserted into live system backplanes and supply voltages, high inrush currents can result due to the charging of bulk capacitance that resides across the supply pins of the circuit ...

Page 14

Micrel, Inc. following equation: Output Voltage Slew Rate, dV OUT where I is the programmed current limit value. LIM Consequently, the value of C FILTER ensure that the overcurrent response time, t exceeds the time needed for the output to ...

Page 15

Micrel, Inc. current (I ) are typically CPOR respectively. For the MIC2583/83R, a capacitor connected to CFILTER is used to set the timer which activates the circuit breaker during overcurrent conditions. When the voltage across the sense resistor exceeds the ...

Page 16

Micrel, Inc. Application Information Design Consideration for Output Undervoltage Detection For output undervoltage detection, the first consideration is to establish the output voltage level that indicates “power is good.” For this example, the output value for which a 12V supply ...

Page 17

Micrel, Inc. 12V in this example, and the ON pin voltage exceeds its threshold (VON) of 1.24V and the MIC2582/83 initiates a start-up cycle. In Figure 6, the connection sense consisting of a discrete logic-level MOSFET and a few resistors ...

Page 18

... The MIC2583R provides an auto-restart function. Upon an overcurrent fault condition such as a short circuit, the MIC2583R initially shuts off the GATE output. The MIC2583R attempts to restart with a 12µA charge current at a preset 10% duty cycle until the fault condition is removed. The interval between auto-retry ...

Page 19

Micrel, Inc. MOSFET Selection Selecting the proper external MOSFET for use with the MIC2582/83 involves three straightforward tasks: • Choice of a MOSFET which meets minimum voltage requirements. • Selection of a device to handle the maximum continuous current (steady-state ...

Page 20

Micrel, Inc. MOSFET Steady-State Thermal Issues The selection of a MOSFET to meet the maximum continuous current is a fairly straightforward exercise. First, arm yourself with the following data: • The value of I LOAD(CONT, MAX.) question (see Sense Resistor ...

Page 21

Micrel, Inc. Thus: Assume T = 55°C maximum, 1 square inch of copper at A the drain leads, no airflow. Recalling from our previous approximation hint, the part has (0.0335/2) = 17mΩ at 25°C. ON Assume it ...

Page 22

Micrel, Inc. PCB Layout Considerations Because of the low values of the sense resistors used with the MIC2582/83 controllers, special attention to the layout must be used in order for the device’s circuit breaker function to operate properly. Specifically, the ...

Page 23

Micrel, Inc. MOSFET Vendor Key MOSFET Type(s) Vishay (Siliconix) Si4420DY (SOIC-8) package Si4442DY (SOIC-8) package Si4876DY (SOIC-8) package Si7892DY (PowerPAK™ SOIC-8) International Rectifier IRF7413 (SOIC-8 package) IRF7457 (SOIC-8 package) IRF7601 (SOIC-8 package) Fairchild Semiconductor FDS6680A (SOIC-8 package) Philips PH3230 (SOT669-LFPAK) ...

Page 24

Micrel, Inc. Package Information April 2009 8-Pin SOIC (M) 24 MIC2582/MIC2583 M9999-043009-C ...

Page 25

Micrel, Inc. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no ...

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