MIC2583-JBQS Micrel Inc, MIC2583-JBQS Datasheet

IC CTRLR HOT SWAP 100MV 16-QSOP

MIC2583-JBQS

Manufacturer Part Number
MIC2583-JBQS
Description
IC CTRLR HOT SWAP 100MV 16-QSOP
Manufacturer
Micrel Inc
Type
Hot-Swap Controllerr
Datasheet

Specifications of MIC2583-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 MIC2583-JBQS

MIC2583-JBQS Summary of contents

Page 1

... 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 ...

Page 2

... April 2009 Fast Circuit Breaker Threshold 100mV x = J1, Off Off 100mV x = K*, 150mV x = L*, 200mV x = M*, Off 100mV x = K*, 150mV x = L*, 200mV x = M*, Off 2 MIC2582/MIC2583 Circuit Breaker Package Latched off 8-Pin SOIC Latched off 16-pin QSOP Auto-retry 16-pin QSOP 16-Pin QSOP (QS) M9999-043009-C ...

Page 3

... GATE voltage is adjusted to TRIPSLOW (50mV) is exceeded for longer than TRIPSLOW , at any point due to fast, high amplitude TRIPFAST for either device is 100mV. Other fast trip thresholds are disabled). Please contact factory for TRIPFAST MIC2582/MIC2583 POR ). The /POR pin POR > 1.24V < 1.19V ...

Page 4

... The /FAULT pin is asserted when the circuit breaker trips due to an over current condition or when an under-voltage lockout condition exists. The/FAULT pin requires a pull-up resistor (10kΩ minimum) to VCC. DIS Discharge Output: When the MIC2583/83R is turned off, a 500Ω internal resistor at this output allows the discharging of any load capacitance to ground internal connection. ...

Page 5

... Operating Ratings Supply Voltage (V Ambient Temperature (T +0.3V Junction Thermal Resistance CC +0.3V SOIC (θ CC QSOP (θ (3) Condition − TRIP CC SENSE TRIPSLOW V TRIPFAST (MIC2582-Jxx) V TRIPFAST (MIC2583/83R − GATE Start Cycle 0V, V GATE > GATE /FAULT = 0 Turn Off (MIC2583/83R only) − > V (timer on) ...

Page 6

... 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) Output Discharge Resistance R DIS (MIC2583/83R only) (4) AC Parameters t Fast Overcurrent SENSE to GATE OCFAST Low Trip Time t Slow Overcurrent SENSE to GATE OCSLOW ...

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

... The MIC2582 and MIC2583 act as a controller for external N-Channel MOSFET devices in which the gate drive is controlled to provide inrush current limiting and output voltage slew rate control during hot plug insertions ...

Page 14

... LOAD thresholds sensed across the VCC and SENSE pins. The first level of the circuit breaker functions as follows. For the MIC2583/83R, once the voltage sensed across these two pins exceeds 50mV, the overcurrent timer, its duration set by capacitor C 6 ...

Page 15

... 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 slow trip current limit threshold of 50mV, the overcurrent timer begins to charge for a time period ( ...

Page 16

... V ⎜ ⎟ OUT(Good) = ⎢ − ⎜ ⎟ ⎢ V ⎝ ⎠ ⎣ FB(MAX) = 1.29V, V OUT(Good) FB(MAX) , thus the /POR and PWRGD (MIC2583/83R) FB(MAX) are several configuration MIC2582/MIC2583 ⎤ ⎥ (9.1) ⎥ ⎦ = 11V, and R6 is options for the M9999-043009-C ...

Page 17

... R 1 ⎜ + ⎟ × where T ⎝ ⎠ implementation of additional copper heat sinking is highly recommended for the area under/around the MOSFET. Figure 7. Higher UVLO Setting 17 and the expected power θ (JA θ(JA 20º precaution, the A A (MAX OPERATING) MIC2582/MIC2583 (10) M9999-043009-C ...

Page 18

... The interval between auto-retry attempts is set by capacitor C FILTER Sense Resistor Selection The MIC2582 and MIC2583 use a low-value sense resistor to measure the current flowing through the MOSFET switch (and therefore the load). This sense resistor is nominally set at 50mV/I accommodate worst-case tolerances for both the sense resistor (allow ± ...

Page 19

... Finally, the external gate drive of the MIC2582/83 requires a low-voltage logic level MOSFET when operating at voltages lower than 3V. There are 2.5V logic level MOSFETs available. Please see Table 4 MOSFET and Sense Resistor Vendors” “ suggested manufacturers. Figure 9. Zener Clamped MOSFET Gate 19 MIC2582/MIC2583 for M9999-043009-C ...

Page 20

... Almost all power MOSFET data θ(JA) IN LOAD(CONT. MAX [12V-(2.5A)(3Ω)] = 4.5V MOSFET P = (4.5V x 2.5A) = 11.25W for 100msec. MOSFET of this MOSFET to a highly infrequent event of this MIC2582/MIC2583 the worse case without = 12V, t has OCSLOW is 2.5A, the slow- ) OCSLOW . θ(JA) of θ ...

Page 21

... T J ≅ 61.1ºC equal to the already calculated value J ≅ [17mΩ + (61.1ºC-25ºC)(0.005)(17mΩ)] (2.5A) x (50ºC/W)  ≅ (55ºC + (0.125W)(50ºC/W)  ≅ 61.27º 61º get T = 106ºC. This J(TRANSIENT MAX.) MIC2582/MIC2583 M9999-043009-C ...

Page 22

... The recommended trace for the MOSFET Gate of Figure 11 must be redirected when using MOSFETs packaged in this style. Contact the device manufacturer for package information. and Return) trace CC Figure 11. Recommended PCB Layout for Sense Resistor, Power MOSFET, and Feedback Network 22 MIC2582/MIC2583 M9999-043009-C ...

Page 23

... OUT ≥ 20A I OUT ≥ 20A I OUT Sense Resistors “WSL” Series “OARS” Series ”LR” Series (second source to “WSL”) Table 4. MOSFET and Sense Resistor Vendors 23 MIC2582/MIC2583 (1) Contact Information www.siliconix.com < 3V (203) 452-5664 CC ≤ www.irf.com (310) 322-3331 ≤ www.fairchildsemi.com (207) 775-8100 www ...

Page 24

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

Page 25

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully April 2009 16-Pin QSOP (QS) indemnify Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. 25 MIC2582/MIC2583 M9999-043009-C ...

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