MIC2009YM6 TX Micrel Inc, MIC2009YM6 TX Datasheet

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MIC2009YM6 TX

Manufacturer Part Number
MIC2009YM6 TX
Description
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC2009YM6 TX

Short Circuit Current Limit
0.2 to 2A
Input Voltage Range
2.5 to 5.5V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
6
Package Type
SOT-23
Lead Free Status / RoHS Status
Compliant
General Description
The MIC2009 and MIC2019 are current limiting, high-
side power switches, designed for general purpose
power distribution and control in PCs, PDAs, printers
and other self-powered systems.
The MIC2009 and MIC2019’s primary functions are
current limiting and power switching. They are thermally
protected and will shutdown should their internal
temperature reach unsafe levels. This protects both the
device and the load under high current or fault
conditions.
Features include: fault reporting, with fault blanking to
eliminate noise-induced false alarms; output slew rate
limiting and under voltage detection. Both devices offer
user programmable current limiting thereby providing
designers a continuous spectrum of current limits from
200mA to 2 Amps.
The MIC2019 offers a unique new feature: Kickstart
which allows momentary high current surges to pass
unrestricted without sacrificing overall system safety.
The MIC2009 and MIC2019 are excellent choices for
USB and IEEE 1394 (FireWire) applications or for any
system where current limiting and power control are
desired.
The MIC2009 and MIC2019 are offered in space saving
6-pin SOT-23 and 2mm x 2mm MLF packages.
Typical Application
September 2005
_________________________________________________________________________________________________________
Kickstart is a trademark of Micrel, Inc
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Figure 1. Typical Application Circuit
,
Features
• 70mΩ typical on-resistance
• 2.5V - 5.5V operating range
• User adjustable current limit: 0.2A – 2.0A
• Kickstart
• Fault status flag
• Fault masking: prevents nuisance alarms on current
• Thermal Protection
• Under voltage lock-out
• Built-in slew rate control
• Low quiescent current
Applications
• USB / IEEE 1394 Power Distribution
• Desktop and Laptop PCs
• Set top boxes
• Game consoles
• PDAs
• Printers
• Docking stations
• Chargers
surges or hot plug events
Power Distribution Switch
Adjustable Current Limit
MIC2009/2019
(408) 955-1690
M9999-092305

Related parts for MIC2009YM6 TX

MIC2009YM6 TX Summary of contents

Page 1

... Typical Application Kickstart is a trademark of Micrel, Inc MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 2005 MIC2009/2019 ...

Page 2

Micrel MIC2000 Family Members Part Number Normal Limiting Kickstart 2003 2013 2004 2014 2005 2015 2006 2016 2007 2017 2008 2018 2009 2019 * Dynamic Load Management Adj = Adjustable current limit Ordering Information (1) Part Number Marking MIC2009YM6 FKAA ...

Page 3

Micrel Pin Configuration VOUT 1 8 ILIMIT 2 7 Pad is FAULT GND 6-Pin 2mm X 2mm MLF (ML) Pin Description Pin Pin Pin Number Number Name SOT-23 MLF 1 6 VIN 2 5 GND 3 4 ENABLE ...

Page 4

Micrel Absolute Maximum Ratings All pins........................................................... –0 Power Dissipation .............................. Internally Limited Continuous Output Current ................................. 2.25A Maximum Junction Temperature ........................ 150°C Storage Temperature............................–65°C to 150°C Electrical Characteristics = 25°C unless specified otherwise. Bold indicates –40°C to +85°C ...

Page 5

Micrel AC Characteristics Symbol Parameter t Output turn-ON rise time RISE t Delay before asserting FAULT/ D_FAULT or releasing t Delay before current limiting D_LIMIT t Delay before resetting RESET Kickstart current limit delay, t D_LIMIT t Output Turn-on Delay ...

Page 6

Micrel Timing Diagrams ENABLE VOUT September 2005 50% t ON_DLY 10% Switching Delay Times t RISE 90% 90% 10% 10% Rise and Fall Times t RISE 90% VOUT 10% Output Rise Time 6 MIC2009/MIC2019 50% t OFF_DLY 90% t FALL ...

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Micrel Typical Characteristics Supply Current Output Enabled 100 25°C -40°C 80 85° (V) IN UVLO Threshold vs. Temperature 2.3 2.25 V RISING 2.2 V FALLING 2.15 2.1 2.05 - ...

Page 8

Micrel Functional Characteristics Turn-On/ Turn-Of f FAULT/ (2.5V/div) ENABLE (2.5V/div) V OUT (1V/div) I OUT (200mA/div Time (ms ) Kickstart Response Normal Load with Temporary High Load FLAG (2.5V/div) ENABLE (2.5V/div) V OUT (1V/div) I OUT ...

Page 9

Micrel UVLO Increasing FAULT/ (2.5V/div) ENABLE (2.5V/div) Enable tied OUT (1V/div (1/div Time (µs) Current Limit Response Thermal Shutdown FAULT/ (2.5V/div) ENABLE (2.5V/div) V OUT (1V/div) I ...

Page 10

Micrel Functional Diagram September 2005 Figure 2. MIC2009/2019 Block Diagram 10 MIC2009/MIC2019 M9999-092305 (408) 955-1690 ...

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Micrel Functional Description Input and Output V is both the power supply connection for the internal IN circuitry driving the switch and the input (Source connection) of the power MOSFET switch. V Drain connection of the power MOSFET and supplies ...

Page 12

Micrel Enable ENABLE is a HIGH true control signal, which activates the main MOSFET switch. ENABLE will operate with logic running from supply voltages as low as 1.8V. ENABLE can be wire-OR’d with other MIC2009/2019s or similar devices without damage ...

Page 13

Micrel Application Information Setting I LIMIT The MIC2009/2019’s current limit is user programmable and controlled by a resistor connected between the I pin and Ground. The value of this resistor is determined by the following equation Current Limit ...

Page 14

Micrel Figure Current Limiting for V OUT Figure Current Limiting for V OUT This folding back of I can be generalized by plotting LIMIT function shown below. ...

Page 15

Micrel circuit takes over and holds I OUT for as long as the excessive load persists. Once the MIC2019 drops out of current limiting the Kickstart timer initiates a lock-out period of 128ms such that no further bursts of current ...

Page 16

Micrel thermal pad provided on the MLF package. For optimal performance at higher current levels higher temperature environments, thermal contact with the PCB and the exposed power paddle on the back side of the MLF package should be ...

Page 17

Micrel Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, ...

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Micrel September 2005 18 MIC2009/MIC2019 M9999-092305 (408) 955-1690 ...

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