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MIC2012

Dual Channel USB Current Limiting Power Switch Supporting ACPI S0/S3

Status: In Production

Features:

  • Compliant to USB power distribution specifications
  • Two completely independent switches
  • Integrated switching matrix supports ACPI S0/S3 state transitions without external FET circuits
  • Make-before-break switching ensures glitch-free transitions
  • No back-feed of auxiliary supply onto main supply during standby mode 
  •   Bi-level current-limit preserves auxiliary supply voltage regulation in standby mode
  • Thermally isolated channels
  • Thermal shutdown protection
  • Fault status outputs with fi lter prevents false assertions during hot-plug events
  • Latched thermal shutdown options with auto-reset (MIC2072)
  • Undervoltage lockout
  • UL recognized
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2012 is a dual channel USB power switch designed to support the power distribution requirements for USB Wakeup from the ACPI S3 state. The MIC2012 will directly switch its two outputs between a 5V main supply and a 5V auxiliary supply normally provided in ATX style power supplies. The MIC2012 will adjust its current-limit threshold according to the ACPI state it is in. In the normal active S0 state the current- limit is set at 500mA minimum per channel satisfying the USB continuous output current specifi cation. In the S3 state the current-limit can be reduced to only 100mA per channel to minimize the current that is supplied by the auxiliary supply thereby ensuring that voltage regulation is maintained even during fault conditions. The MIC2012 provides make-before-break switching to ensure glitch-free transitions between the S3 and S0 states. Each channel is also thermally isolated from the other so that a fault in one channel does not effect the other. FAULT status output signals are also provided indicating overcurrent and thermal shutdown conditions. The MIC2072 option latches the output off upon detecting an overcurrent condition for more than 5ms minimum. The output can be reset by either toggling the EN inputs of the MIC2072-1, -2 or by removing the load. Latching the output off provides a circuit breaker mode of operation which reduces power consumption during fault conditions.

Additional Features
    • Compliant to USB power distribution specifications
    • Two completely independent switches
    • Integrated switching matrix supports ACPI S0/S3 state transitions without external FET circuits
    • Make-before-break switching ensures glitch-free transitions
    • No back-feed of auxiliary supply onto main supply during standby mode 
    •   Bi-level current-limit preserves auxiliary supply voltage regulation in standby mode
    • Thermally isolated channels
    • Thermal shutdown protection
    • Fault status outputs with fi lter prevents false assertions during hot-plug events
    • Latched thermal shutdown options with auto-reset (MIC2072)
    • Undervoltage lockout
    • UL recognized
Parametrics
Name
Value
Product Type
USB Power Switches Supporting ACPI S0/S3 State Transitions
Type
Dual
Vin Min (V)
4.5
Vin Max (V)
5.5
Current Limit Fixed (Min)
500mA
Current Limited
Yes
RDS ON @5V (mΩ)
140
Enable Logic
Active High
Θja (C/W)
160
Rev Block Diode
Yes
UVLO
Yes
Thermal Shutdown
Yes
Fault Flag
Yes
Flag Transient Filter
Yes
UL Approved
Yes
Switch Element
N-Ch
Internal Charge Pump
Yes

Documents

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Data Sheet


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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2012-1PZQS
0.083600
0.160000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC2012-1PZQS-TR
0.083600
0.320000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC2012-2PZQS
0.083600
0.160000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC2012-2PZQS-TR
0.083600
0.320000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC2012PZM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2012PZM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2012YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2012YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2012ZM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2012ZM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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