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MFG:MICREL Package Cooled:SOP
Part Number: MIC2544
MFG: MICREL
Package Cooled: SOP
Description: The MIC2544 and MIC2548 are integrated high-side power switches optimized for low loss dc power switch...
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MIC2544
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Suppliers
DataSheet
General Description
MIC2544 General Description
The MIC2544 and MIC2548 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 MIC2544/48 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 current-limit, protects the switch and the attached device.
The MIC2544/48's open-drain flag output is used to indicate current-limiting or thermal shutdown to a local controller. The MIC2548 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 MIC2548.
The MIC2544 and MIC2548 are available in active-high and active-low enable versions in the 8-pin SOP (small-outline package) and 8-pin MSOP (micro-small-outline package).
MIC2544 Maximum Ratings
Supply Voltage (VIN) ..................................................+6.0V
Output Voltage (VOUT) ...............................................+6.0V
Output Current (IOUT) ............................ Internally Limited
Enable Input (VEN) ................................0.3V to VIN+0.3V
Fault Flag Voltage (VFLG) ...........................................+6.0V
Fault Flag Current (IFLG) ............................................50mA
Storage Temperature (TS) ....................... 65 to +150
Junction Temperature (TJ) ...................... Internally Limited
Lead Temperature (soldering 5 sec.) ........................ 260
ESD Rating, Note 3 ...................................................... 2kV
Output Voltage (VOUT) ...............................................+6.0V
Output Current (IOUT) ............................ Internally Limited
Enable Input (VEN) ................................0.3V to VIN+0.3V
Fault Flag Voltage (VFLG) ...........................................+6.0V
Fault Flag Current (IFLG) ............................................50mA
Storage Temperature (TS) ....................... 65 to +150
Junction Temperature (TJ) ...................... Internally Limited
Lead Temperature (soldering 5 sec.) ........................ 260
ESD Rating, Note 3 ...................................................... 2kV
MIC2544 Features
• 2.7V to 5.5V input
• Adjustable current-limit up to 1.5A
• Reverse current flow blocking (no "body diode")
• 75A typical on-state supply current
• 1A typical off-state supply current
• 120m maximum on-resistance
• Open-drain fault flag
• Thermal shutdown
• Thermal shutdown output latch (MIC2548)
• 2ms (slow) turn-on and fast turnoff
• Available with active-high or active-low enable
• Adjustable current-limit up to 1.5A
• Reverse current flow blocking (no "body diode")
• 75A typical on-state supply current
• 1A typical off-state supply current
• 120m maximum on-resistance
• Open-drain fault flag
• Thermal shutdown
• Thermal shutdown output latch (MIC2548)
• 2ms (slow) turn-on and fast turnoff
• Available with active-high or active-low enable
MIC2544 Typical Application
• USB power distribution
• PCI Bus Power Switching
• Notebook PC
• ACPI power distribution
• PC card hot swap applications
• Inrush current-limiting
• PCI Bus Power Switching
• Notebook PC
• ACPI power distribution
• PC card hot swap applications
• Inrush current-limiting
MIC2544 Connection Diagram
MIC2544-1
PDF/DataSheet Download
- Datasheet: MIC2544-1
- File Size: 482144 KB
- Manufacturer: MICREL [Micrel Semiconductor]
- Click here to Download
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