MIC2544-1YM Micrel Inc, MIC2544-1YM Datasheet

IC SW CURR LIMIT HI SIDE 8-SOP

MIC2544-1YM

Manufacturer Part Number
MIC2544-1YM
Description
IC SW CURR LIMIT HI SIDE 8-SOP
Manufacturer
Micrel Inc
Type
High Sider
Datasheet

Specifications of MIC2544-1YM

Input Type
Non-Inverting
Number Of Outputs
1
On-state Resistance
80 mOhm
Current - Peak Output
1.5A
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Power Load Switch Type
High Side
Input Voltage
5.5V
On State Resistance
0.08ohm
Thermal Protection
Yes
On / Enable Input Polarity
Active High
No. Of Outputs
1
Current Limit
1.5A
Short Circuit Current Limit
0.1 to 1.5A
Input Voltage Range
2.7 to 5.5V
Number Of Switches
Single
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
SOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output / Channel
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
576-1737-5
MIC2544-1YM

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC2544-1YM
Manufacturer:
MICREL
Quantity:
2 771
Part Number:
MIC2544-1YM
Manufacturer:
MICREL
Quantity:
282
Part Number:
MIC2544-1YM
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
MIC2544-1YM
Manufacturer:
MICREL
Quantity:
4 424
Company:
Part Number:
MIC2544-1YM
Quantity:
2 500
Company:
Part Number:
MIC2544-1YM
Quantity:
2 500
Part Number:
MIC2544-1YM TR
Manufacturer:
MICREL
Quantity:
2 500
Company:
Part Number:
MIC2544-1YM TR
Quantity:
1 893
Part Number:
MIC2544-1YM-TR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MIC2544-1YMM
Manufacturer:
MICREL
Quantity:
1 000
Part Number:
MIC2544-1YMM
Manufacturer:
MICREL
Quantity:
433
Part Number:
MIC2544-1YMM
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
MIC2544-1YMM TR
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
MIC2544-1YMM TR
Manufacturer:
MICREL
Quantity:
11 604
Part Number:
MIC2544-1YMM-TR
0
Part Number:
MIC2544-1YMMTR
Manufacturer:
MICREL
Quantity:
10 000
Part Number:
MIC2544-1YMMTR
Manufacturer:
MIC
Quantity:
14 215
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 SOIC
(small-outline integrated circuit) and 8-pin MSOP (micro-
small-outline package).
_________________________________________________________________________________________________________
Typical Application
April 2010
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
Typical Advanced Configuration and Power Interface (ACPI) Application
Features
• 2.7V to 5.5V input
• Adjustable current-limit up to 1.5A
• Reverse current flow blocking (no “body diode”)
• 75μA typical on-state supply current
• 1μA typical off-state supply current
• 120mΩ 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
Applications
• USB power distribution
• PCI bus power switching
• Notebook PC
• ACPI power distribution
• PC card hot swap applications
• Inrush current-limiting
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Programmable Current Limit
MIC2544/2548
High-Side Switch
M9999-043010

Related parts for MIC2544-1YM

MIC2544-1YM Summary of contents

Page 1

... 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 SOIC (small-outline integrated circuit) and 8-pin MSOP (micro- small-outline package) ...

Page 2

... Ordering Information* Part Number Enable MIC2544-1BM Active High MIC2544-1BMM Active High MIC2544-2BM Active Low MIC2544-2BM Active Low MIC2544-1YM Active High MIC2544-1YMM Active High MIC2544-2YM Active Low MIC2544-2YMM Active Low MIC2548-1BM Active High MIC2548-1BMM Active High MIC2548-2BM Active Low MIC2548-2BMM Active Low ...

Page 3

... Current Limit: Sets current-limit threshold using an external resistor, R ILIM connected to ground. 154Ω < Input: Output MOSFET drain. Also powers internal circuitry. Switch (Output): Output MOSFET source. Pins 6 and 8 must be externally OUT connected. NC Not internally connected. 3 MIC2544/2548 8-Pin MSOP (MM) < 2.29kΩ. SET M9999-043010 1 SET ...

Page 4

... Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 4. Off is ≤0.8V and on is ≥2.4V for the MIC2544-1 and MIC2548-1. Off is ≥2.4V and on is ≤0.8V for the MIC2544-2 and MIC2548-2. The enable input has about 200mV of hysteresis. ...

Page 5

... Micrel, Inc. Test Circuit Timing Diagrams April 2010 Functional Characteristics Test Circuit Figure 1a. MIC2544/48-1 Figure 1b. MIC2544/48-2 5 MIC2544/2548 M9999-043010 ...

Page 6

... Micrel, Inc. Timing Diagrams continued Figure 2a. MIC2548-2 Timing: Output is reset by toggling EN April 2010 Figure 2b. MIC2544-2 Timing 6 MIC2544/2548 M9999-043010 ...

Page 7

... Micrel, Inc. Typical Characteristics April 2010 7 MIC2544/2548 M9999-043010 ...

Page 8

... Micrel, Inc. Typical Characteristics continued April 2010 8 MIC2544/2548 M9999-043010 ...

Page 9

... Micrel, Inc. Functional Characteristics April 2010 9 MIC2544/2548 M9999-043010 ...

Page 10

... Micrel, Inc. Block Diagram April 2010 10 MIC2544/2548 M9999-043010 ...

Page 11

... Micrel, Inc. Functional Description The MIC2544 and MIC2548 are high-side N-channel switches available with active-high or active-low enable inputs. Fault conditions turn-off or inhibit turn-on of the output transistor and activate the open-drain error flag transistor making it sink current to ground. Input and Output IN is the power supply connection to the logic circuitry and the drain of the output MOSFET ...

Page 12

... C transient surge pass for 100μs without tripping the overcurrent flag (FLG). USB Power Distribution The MIC2544 is ideal for meeting USB power distribution requirements. Figure 4 depicts a USB Host application. RSET should be set to a value providing a current-limit >500mA. The accurate current-limit of the MIC2544 will reduce power supply current requirements ...

Page 13

... Micrel, Inc. April 2010 Figure 5. Hot Plug Application 13 MIC2544/2548 M9999-043010 ...

Page 14

... 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 2010 8-pin SOIC (M) 8-Pin MSOP (MM) indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel, Incorporated. 14 MIC2544/2548 M9999-043010 ...

Related keywords