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MIC2545A

Adjustable 3A Single High-Side Current Limit Power Switch

Status: In Production

Features:

  • 2.7V to 5.5V input
  • Adjustable current-limit up to 3A
  • Reverse current flow blocking
  • 90µA typical on-state supply current
  • 1µA typical off-state supply current
  • 50mΩ maximum on-resistance
  • Open-drain fault flag
  • Thermal shutdown
  • Thermal-shutdown output latch (MIC2549A)
  • 2ms (slow) soft-start turn-on, fast turnoff
  • Available with active-high or active-low enable
  • UL recognized and EN/IEC 60950-1 (CB) Certified
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2545A and MIC2549A are integrated high-side power switches optimized for low-loss DC power switching and other power-management applications, including advanced configuration and power interface (ACPI). The MIC2545A/49A is a cost-effective, highly-integrated solution that requires few external components to satisfy USB and ACPI requirements. Load current management features include a precision, resistor-programmable output current-limit and a soft-start circuit, which minimizes inrush current when the switch is enabled. Thermal shutdown, along with adjustable current-limit, protects the switch and the attached device. The MIC2545A/49A's open-drain flag output is used to indicate current-limiting or thermal shutdown to a local controller. The MIC2549A has an additional internal latch which turns the output off upon thermal shutdown, providing robust fault control. The enable signal is compatible with both 3V and 5V logic, and is also used as the thermal shutdown latch reset for the MIC2549A. The MIC2545A and MIC2549A are available in active-high and active-low enable versions in 8-pin DIP, SOIC, and TSSOP packages.

Additional Features
    • 2.7V to 5.5V input
    • Adjustable current-limit up to 3A
    • Reverse current flow blocking
    • 90µA typical on-state supply current
    • 1µA typical off-state supply current
    • 50mΩ maximum on-resistance
    • Open-drain fault flag
    • Thermal shutdown
    • Thermal-shutdown output latch (MIC2549A)
    • 2ms (slow) soft-start turn-on, fast turnoff
    • Available with active-high or active-low enable
    • UL recognized and EN/IEC 60950-1 (CB) Certified
Parametrics
Name
Value
Product Type
USB Power Dist
Type
Single
Vin Min (V)
2.7
Vin Max (V)
5.5
Adj Current Limit
Yes
Current Limit Adj# (Max)
3.0A
Current Limited
Yes
RDS ON @5V (mΩ)
35
Enable Logic
Active High
Θja (C/W)
160, 130, 100
Rev Block Diode
Yes
Thermal Shutdown
Yes
Fault Flag
Yes
UL Approved
Yes
Switch Element
N-Ch

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2545A-1YTS
0.060000
0.125000
14
TSSOP
4.4mm
Matte Tin
e3
MIC2545A-1YTS-TR
0.060000
0.246800
14
TSSOP
4.4mm
Matte Tin
e3
MIC2545A-2YTS
0.060000
0.125000
14
TSSOP
4.4mm
Matte Tin
e3
MIC2545A-2YTS-TR
0.060000
0.246800
14
TSSOP
4.4mm
Matte Tin
e3
MIC2545A-1YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2545A-1YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2545A-2YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2545A-2YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2545A-1YN
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
MIC2545A-2YN
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
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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