MIC2090-1YM5 TR Micrel Inc, MIC2090-1YM5 TR Datasheet

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MIC2090-1YM5 TR

Manufacturer Part Number
MIC2090-1YM5 TR
Description
IC DISTRIBUTION SW 50MA SOT-23-5
Manufacturer
Micrel Inc
Series
-r
Type
High Side Switchr
Datasheet

Specifications of MIC2090-1YM5 TR

Number Of Outputs
1
Rds (on)
1.2 Ohm
Internal Switch(s)
Yes
Current Limit
50mA
Voltage - Input
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
576-3890-2
MIC2090-1YM5TR
General Description
The MIC2090 and MIC2091 are high-side MOSFET power
switches optimized for general-purpose 50mA or 100mA
low power distribution in circuits requiring over-current
limiting and circuit protection. Typical applications for these
parts are for switching power in USB ports, portable
consumer items, camera and camcorder motor protection,
thermal printer head protection, and many other low
current-load switching applications.
The MIC2090 and MIC2091 come in two versions: auto-
retry current limit and output latch off on an over current
fault. The MIC2090 and MIC2091 are offered in a space
saving 5-pin SOT-23 package with an operating junction
temperature range of -40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Typical Application
July 2011
_________________________________________________________________________________________________________________________
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
MIC2091 USB Power Switch
Features
• 1.8V to 5.5V supply voltage
• 790 mΩ typical R
• MIC2090 is rated for 50mA minimum continuous current
• MIC2091 is rated for 100mA minimum continuous
• Reverse current blocking (OGI)
• 20ns super fast reaction time to hard short at output
• 10ms fault flag delay (t
• Auto-retry overcurrent and short-circuit protection (-1
• Latch-off on current limit (-2 version)
• Thermal shutdown
• Fault status flag indicates: over-current, over-
• Under-voltage lockout (UVLO)
• Low quiescent current
Applications
• USB peripherals
• Camcorder
• DSC
• MP3/iPod
• SD protection
• USB low-power hub
current
assertions
version)
temperature, or UVLO
MIC2090/MIC2091
Current Limiting Power
Distribution Switches
DSON
at 3.3V
D_FAULT/
Startup into Short Circuit
) eliminates false
http://www.micrel.com
M9999-070611-B

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MIC2090-1YM5 TR Summary of contents

Page 1

... The MIC2090 and MIC2091 come in two versions: auto- retry current limit and output latch off on an over current fault. The MIC2090 and MIC2091 are offered in a space saving 5-pin SOT-23 package with an operating junction temperature range of -40°C to +125°C. ...

Page 2

... Latch-Off 5-Pin SOT-23 (M5) Pin Function Supply (Input): +1.8V to +5.5V. Provides power to the output switch and the MIC2090/MIC2091 internal control circuitry. Ground. Enable (Input): Active-high TTL compatible control input. A high signal turns on the internal switch and supplies power to the load. This pin cannot be left floating. ...

Page 3

... OUT MIC2090 V = 1.8V 50mA IN OUT MIC2091 V = 5.0V 100mA IN OUT MIC2091 V = 3.3V 100mA IN OUT MIC2091 V = 1.8V 100mA IN OUT MIC2090 and MIC2091 off 5.5V OUT 3 (2) )..................................... +1.8V to +5. .................................. +1.8V to +5.5V OUT ).............................................. .............................. 0V to 5.5V FAULT/ ) .........................................1mA FAULT/ ) .......................... –40°C to +85° ........................ –40°C to +125° ...............................................252.7° ...

Page 4

... When an over-current condition happens, the part will go into constant output current for this time. After this time it will turn off the output and pull low the PIN FAULT/. The MIC2090-1 and MIC2091-1 will automatically restart themselves after the auto restart time T ...

Page 5

... Micrel, Inc. Timing Diagrams July 2011 Output Rise and Fall Times ( Switch Delay Time ( OFF 5 MIC2090/MIC2091 M9999-070611-B ...

Page 6

... V Rising EN 1.1 1.0 0.9 0.8 0.7 4.0 4.5 5.0 5.5 1.5 2.0 2.5 INPUT VOLTAGE (V) Auto-Reset Time vs. Input Voltage (MIC2090) 61.0 60.5 60.0 59.5 59 10μF LOAD 58.5 58.0 4.0 4.5 5.0 5.5 1.5 2.0 2.5 INPUT VOLTAGE (V) Output Turn-On Delay vs ...

Page 7

... TEMPERATURE (°C) Current Limit vs. Temperature LIMIT OUT LIMIT -40 - TEMPERATURE (°C) MIC2090/MIC2091 C = 0.1μF LOAD R = 500Ω LOAD 3.0 3.5 4.0 4.5 5 (MIC2090 4.5V OUT M9999-070611-B ...

Page 8

... Micrel, Inc. Typical Characteristics (Continued) Current Limit vs. Temperature (MIC2090) 110 105 100 LIMIT OUT 1.6V LIMIT OUT 1. -40 - TEMPERATURE (°C) Current Limit vs. Temperature (MIC2091) 240 230 LIMIT OUT 220 210 200 190 1.6V LIMIT OUT 180 170 160 V = 1.8V IN 150 140 ...

Page 9

... TEMPERATURE (°C) V UVLO Thresholds IN vs. Temperature 1.4 V Rising IN 1.3 1.2 V Falling IN 1.1 1.0 -40 - TEMPERATURE (°C) July 2011 OGI Threshold vs. Temperature 120 V = 5.0V IN 100 1. -40 - TEMPERATURE (° MIC2090/MIC2091 OGI Delay vs. Temperature 9 5.0V IN 8.8 8.6 8.4 8.2 8 1.8V IN 7.8 7 -40 -15 10 TEMPERATURE (° M9999-070611-B ...

Page 10

... Micrel, Inc. Functional Characteristics July 2011 10 MIC2090/MIC2091 M9999-070611-B ...

Page 11

... Micrel, Inc. Functional Characteristics (Continued) July 2011 11 MIC2090/MIC2091 M9999-070611-B ...

Page 12

... Micrel, Inc. Functional Characteristics (Continued) July 2011 12 MIC2090/MIC2091 M9999-070611-B ...

Page 13

... Micrel, Inc. Functional Characteristics (Continued) July 2011 13 MIC2090/MIC2091 M9999-070611-B ...

Page 14

... Micrel, Inc. Functional Diagram July 2011 MIC2090/MIC2091 Functional Diagram 14 MIC2090/MIC2091 M9999-070611-B ...

Page 15

... C OUT An output capacitor is required to reduce ringing and voltage sag on the output during a transient condition. A value between 1μF and 10μF is recommended. A 10μF or larger capacitor should be used if the distance between the MIC2090/MIC2091 and the load is greater than three inches. The internal MIC2090/MIC2091 turns off in (typically) 20ns. This ...

Page 16

... MIC2090 and MIC2091. . OVERTEMP I LIMIT When the MIC2090/MIC2091 is current limiting Eq.2 designed to act as a constant current source to the load. As the load tries to pull more than the maximum current, V OUT increases. When V switch momentarily turns off to insure the internal MOSFET switch is not damaged by a very fast short Eq ...

Page 17

... Current Limiting for V OUT July 2011 Under-Voltage Lock Out (UVLO) The MIC2090/MIC2091 switches have an Under-Voltage Lock Out (UVLO) feature that will shut down the switch in a reproducible way when the input power supply voltage goes too low. The UVLO circuit disables the output until the supply voltage exceeds the UVLO threshold ...

Page 18

... Micrel, Inc. MIC2090/MIC2091 Evaluation Board Schematic July 2011 18 MIC2090/MIC2091 M9999-070611-B ...

Page 19

... Ceramic Capacitor, X5R NF (No Fill) (2) Vishay Dale 10k, 1%, 0603 Resistor NF (No Fill) (3) Micrel, Inc. Current Limiting Power Distribution Switch (3) Micrel, Inc. Current Limiting Power Distribution Switch (3) Micrel, Inc. Current Limiting Power Distribution Switch (3) Micrel, Inc. Current Limiting Power Distribution Switch 19 MIC2090/MIC2091 Qty M9999-070611-B ...

Page 20

... Micrel, Inc. PCB Layout Recommendations July 2011 Top Silk Screen Top Copper 20 MIC2090/MIC2091 M9999-070611-B ...

Page 21

... Micrel, Inc. PCB Layout Recommendations (Continued) July 2011 Bottom Copper Bottom Silk Screen 21 MIC2090/MIC2091 M9999-070611-B ...

Page 22

... Micrel, Inc. Package Information July 2011 5-Pin SOT23 (SOT23-5) 22 MIC2090/MIC2091 M9999-070611-B ...

Page 23

... 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 July 2011 indemnify Micrel for any damages resulting from such use or sale. © 2011 Micrel, Incorporated. 23 MIC2090/MIC2091 http://www.micrel.com M9999-070611-B nt ...

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