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MIC2545A-1YM

Description
Power Switch ICs - Power Distribution Programmable Current Limit Single High-Side Switch
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size667KB,19 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MIC2545A-1YM Overview

Power Switch ICs - Power Distribution Programmable Current Limit Single High-Side Switch

MIC2545A-1YM Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
package instructionSOP,
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time4 weeks
Built-in protectionOVER CURRENT; THERMAL
Interface integrated circuit typeBUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 codeR-PDSO-G8
JESD-609 codee4
length4.9 mm
Humidity sensitivity level3
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output current flow directionSINK
Nominal output peak current0.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.73 mm
Maximum supply voltage5.5 V
Minimum supply voltage2.7 V
Nominal supply voltage5 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceNickel/Palladium/Gold (Ni/Pd/Au)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
connection time5000 µs
width3.9 mm
Base Number Matches1
MIC2545A/2549A
Programmable Current-Limit
High-Side Switch
General Description
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.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
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
Applications
USB power distribution
PCI Bus Power Switching
Notebook PC
ACPI power distribution
PC card hot swap applications
Inrush current-limiting
_________________________________________________________________________________________________________________________
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
June 2011
M9999-062711-A

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Is it Rohs certified? conform to conform to conform to conform to incompatible
Reach Compliance Code compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
JESD-609 code e4 e3 e3 e4 e0
Number of terminals 8 14 14 8 12
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 125 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -55 °C
Package form SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SIP
Terminal surface Nickel/Palladium/Gold (Ni/Pd/Au) Matte Tin (Sn) Matte Tin (Sn) Nickel/Palladium/Gold (Ni/Pd/Au) Tin/Lead (Sn/Pb)
package instruction SOP, TSSOP, LEAD FREE, TSSOP-14 SOP, -
Factory Lead Time 4 weeks 4 weeks 4 weeks 4 weeks -
Built-in protection OVER CURRENT; THERMAL OVER CURRENT; THERMAL OVER CURRENT; THERMAL OVER CURRENT; THERMAL -
Interface integrated circuit type BUFFER OR INVERTER BASED PERIPHERAL DRIVER BUFFER OR INVERTER BASED PERIPHERAL DRIVER BUFFER OR INVERTER BASED PERIPHERAL DRIVER BUFFER OR INVERTER BASED PERIPHERAL DRIVER -
JESD-30 code R-PDSO-G8 R-PDSO-G14 R-PDSO-G14 R-PDSO-G8 -
length 4.9 mm 5 mm 5 mm 4.9 mm -
Humidity sensitivity level 3 1 1 1 -
Number of functions 1 1 1 1 -
Output current flow direction SINK SINK SINK SINK -
Nominal output peak current 0.5 A 0.5 A 0.5 A 0.5 A -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code SOP TSSOP TSSOP SOP -
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR -
Peak Reflow Temperature (Celsius) 260 260 260 260 -
Certification status Not Qualified Not Qualified Not Qualified Not Qualified -
Maximum seat height 1.73 mm 1.2 mm 1.2 mm 1.879 mm -
Maximum supply voltage 5.5 V 5.5 V 5.5 V 5.5 V -
Minimum supply voltage 2.7 V 2.7 V 2.7 V 2.7 V -
Nominal supply voltage 5 V 5 V 5 V 5 V -
surface mount YES YES YES YES -
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL -
Terminal form GULL WING GULL WING GULL WING GULL WING -
Terminal pitch 1.27 mm 0.65 mm 0.65 mm 1.27 mm -
Terminal location DUAL DUAL DUAL DUAL -
Maximum time at peak reflow temperature 40 40 40 40 -
connection time 5000 µs 5000 µs 5000 µs 5000 µs -
width 3.9 mm 4.4 mm 4.4 mm 3.9 mm -
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