MIC2005A-1YM5TR

MIC2005A-1YM5TR MICREL | Alldatasheet

Document overview

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• PDF pages: 30

Technical content

Features

• MIC20X3 – MIC20X9 70mΩ typical on-resistance @ 5V
• MIC2005A/20X9A 170m Ω typical on-resistance @ 5V
• Enable active high or active low
• 2.5V – 5.5V operating range
• Pre-set current limit values of 0.5A, 0.8A, and 1.2A*
• Adjustable current limit 0.2A to 2.0A* (MIC20X7- MIC20X9)
• Adjustable current limit 0.1A to 0.9A* (MIC20X9A)
• Undervoltage lock-out (UVLO)
• Variable UVLO allows adjustable UVLO thresholds*
• Automatic load discharge for capacitive loads*
• Soft-start prevents large current inrush
• Adjustable slew rate allows custom slew rates*
• Automatic-on output after fault
• Thermal protection * Available on some family members

Applications

• Digital televisions (DTV)
• Set top boxes
• PDAs
• Printers
• USB / IEEE 1394 power distribution
• Desktop and laptop PCs
• Game consoles
• Docking stations Typical Application VIN VOUT MIC2005A VBUS USB PortGND EN FAULT/ 5V Supply VIN Logic Controller ON/OFF OVERCURRENT/ 1µF 120µF

Figure 1. Typical Application Circuit

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Ordering Information

Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2003-0.5YM5 FD05 0.5A MIC2003-0.8YM5 FD08 0.8A MIC2003-1.2YM5 FD12 1.2A 5-Pin SOT-23 MIC2003-0.5YML 5 0 D 0.5A MIC2003-0.8YML 8 0 D 0.8A MIC2003-1.2YML 2 1 D 1.2A No 6-Pin 2mm x 2mm MLF® MIC2013-0.5YM5 FL05 0.5A MIC2013-0.8YM5 FL08 0.8A MIC2013-1.2YM5 FL12 1.2A 5-Pin SOT-23 MIC2013-0.5YML 5 0 L 0.5A MIC2013-0.8YML 9 0 L 0.8A MIC2013-1.2YML 2 1 L 1.2A Yes 6-Pin 2mm x 2mm MLF® MIC2004/2014 Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2004-0.5YM5 FE05 0.5A MIC2004-0.8YM5 FE08 0.8A MIC2004-1.2YM5 FE12 1.2A 5-Pin SOT-23 MIC2004-0.5YML 5 0 E 0.5A MIC2004-0.8YML 8 0 E 0.8A MIC2004-1.2YML 2 1 E 1.2A No 6-Pin 2mm x 2mm MLF® MIC2014-0.5YM5 FM05 0.5A MIC2014-0.8YM5 FM08 0.8A MIC2014-1.2YM5 FM12 1.2A 5-Pin SOT-23 MIC2014-0.5YML 5 0 M 0.5A MIC2014-0.8YML 9 0 M 0.8A MIC2014-1.2YML 2 1 M 1.2A Yes 6-Pin 2mm x 2mm MLF® Notes: 1. All MIC20XX Family parts are RoHS-compliant lead free. 2. Over/Under-bar symbol ( ¯ / _ ) may not be to scale. On the package the over/under symbol begins above/below the first character of the marking.

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Ordering Information (Continued) MIC2005 Part Number(1) Marking (2) Current Limit Enable Kickstart™ Package MIC2005-0.5YM6 FF05 0.5A Active High MIC2005-0.8YM6 FF08 0.8A Active High MIC2005-1.2YM6 FF12 1.2A Active High 6-Pin SOT-23 MIC2005-0.5YML 5 0 F 0.5A Active High MIC2005-0.8YML 8 0 F 0.8A Active High MIC2005-1.2YML 2 1 F 1.2A Active High No 6-Pin 2mm x 2mm MLF® MIC2005L Part Number(1) Marking (2) Current Limit Enable Kickstart™ Package MIC2005-0.5LYM5 5LFF 0.5A Active Low MIC2005-0.8LYM5 8LFF 0.8A Active Low MIC2005-1.2LYM5 4LFF 1.2A Active Low No 5-Pin SOT-23 MIC2005A Part Number(1) Marking (2) Current Limit Enable Kickstart™ Package MIC2005A-1YM5 FA51 0.5A Active High MIC2005A-2YM5 FA52 0.5A Active Low 5-Pin SOT-23 MIC2005A-1YM6 FA53 0.5A Active High MIC2005A-2YM6 FA54 0.5A Active Low No 6-Pin SOT-23 MIC2015 Part Number(1) Marking (2) Current Limit Enable Kickstart™ Package MIC2015-0.5YM6 FN05 0.5A Active High MIC2015-0.8YM6 FN08 0.8A Active High MIC2015-1.2YM6 FN12 1.2A Active High 6-Pin SOT-23 MIC2015-0.5YML 5 0 N 0.5A Active High MIC2015-0.8YML 8 0 N 0.8A Active High MIC2015-1.2YML 2 1 N 1.2A Active High Yes 6-Pin 2mm x 2mm MLF® Notes: 1. All MIC20XX Family parts are RoHS-compliant lead free. 2. Over/Under-bar symbol ( ¯ / _ ) may not be to scale. On the package the over/under symbol begins above/below the first character of the marking.

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Ordering Information (Continued) MIC2006/2016 Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2006-0.5YM6 FG05 0.5A MIC2006-0.8YM6 FG08 0.8A MIC2006-1.2YM6 FG12 1.2A 6-Pin SOT-23 MIC2006-0.5YML 5 0 G 0.5A MIC2006-0.8YML 8 0 G 0.8A MIC2006-1.2YML 2 1 G 1.2A No 6-Pin 2mm x 2mm MLF® MIC2016-0.5YM6 FP05 0.5A MIC2016-0.8YM6 FP08 0.8A MIC2016-1.2YM6 FP12 1.2A 6-Pin SOT-23 MIC2016-0.5YML 5 0 P 0.5A MIC2016-0.8YML 9 0 P 0.8A MIC2016-1.2YML 2 1 P 1.2A Yes 6-Pin 2mm x 2mm MLF® MIC2007/2017 Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2007YM6 FHAA 6-Pin SOT-23 MIC2007YML A HA No 6-Pin 2mm x 2mm MLF® MIC2017YM6 FQAA 6-Pin SOT-23 MIC2017YML 0.2A – 2.0A Yes 6-Pin 2mm x 2mm MLF® A QA MIC2008/2018 Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2008YM6 FJAA 6-Pin SOT-23 MIC2008YML A JA No 6-Pin 2mm x 2mm MLF® MIC2018YM6 FRAA 6-Pin SOT-23 MIC2018YML 0.2A – 2.0A Yes 6-Pin 2mm x 2mm MLF® A RA MIC2009/2019 Part Number(1) Marking (2) Current Limit Kickstart™ Package MIC2009YM6 FKAA 6-Pin SOT-23 MIC2009YML A KA No 6-Pin 2mm x 2mm MLF® MIC2019YM6 FSAA 6-Pin SOT-23 MIC2019YML A SA 0.2A – 2.0A Yes 6-Pin 2mm x 2mm MLF® Notes: 1. All MIC20XX Family parts are RoHS-compliant lead free. 2. Over/Under-bar symbol ( ¯ / _ ) may not be to scale. On the package the over/under symbol begins above/below the first character of the marking.

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Ordering Information (Continued) MIC2009A/2019A Part Number(1) Marking (2) Current Limit Kickstart™ Enable Package MIC2009A-1YM6 FK1 Active High MIC2009A-2YM6 FK2 No Active Low MIC2019A-1YM6 FS1 Active High MIC2019A-2YM6 FS2 0.1 A – 0.9 A Yes Active Low 6-pin SOT-23 Notes: 1. All MIC20XX Family parts are RoHS-compliant lead free. 2. Over/Under-bar symbol ( ¯ / _ ) may not be to scale. On the package the over/under symbol begins above/below the first character of the marking. MIC20XX Family Member Functionality Part Number Pin Function Normal Limiting Kickstart™ (1) I LIMIT I LIMIT ENABLE High ENABLE Low CSLEW FAULT/ VUVLO(5) Load Discharge 2006 2016 Fixed (2) 2009A-2 2019A-2 Adj.(3) Notes: 1. Kickstart™ provides an alternate start-up behavior; however, pin-outs are identical. 2. Kickstart™ not available. 3. Fixed = Factory-programmed current limit. 4. Adj. = User adjustable current limit. 5. VUVLO = Variable UVLO (Previously called DML). 6. CSLEW not available in 5-pin package.

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MIC20XX Family Member Pin Configuration Table, SOT Packages Part Number Pin Number Normal Limiting Kickstart™ ILIMIT 1 2 3 4 5 6 2003 2013 VIN GND NC NC VOUT ─ 2004 2014 VIN GND EN NC VOUT ─ 2005 2015 VIN GND EN FAULT/ CSLEW VOUT 2005L ─ (1) VIN GND EN FAULT/ VOUT ─ 2005Axxx6 ─ (1) VIN GND EN FAULT/ CSLEW VOUT 2005Axxx5 ─ (1) VIN GND EN FAULT/ VOUT ─ 2006 2016 Fixed(2) VIN GND EN VUVLO(4) CSLEW VOUT 2007 2017 VIN GND EN ILIMIT CSLEW VOUT 2008 2018 VIN GND EN ILIMIT CSLEW VOUT 2009 2019 VIN GND EN FAULT/ ILIMIT VOUT 2009A 2019A Adj.(3) VIN GND EN FAULT/ ILIMIT VOUT Notes: 1. Kickstart™ not available. 2. Fixed = Factory-programmed current limit. 3. I LIMIT = User adjustable current limit. 4. VUVLO = Variable UVLO (Previously called DLM). MIC20XX Family Member Pin Configuration Table, MLF® Packages (5) Part Number Pin Number Normal Limiting Kickstart™ I Limit 6 5 4 3 2 1 2003 2013 VIN GND NC NC NC VOUT 2004 2014 VIN GND EN NC NC VOUT 2005 2015 VIN GND EN FAULT/ CSLEW VOUT 2006 2016 Fixed(2) VIN GND EN VUVLO(4) CSLEW VOUT 2007 2017 VIN GND EN ILIMIT CSLEW VOUT 2008 2018 VIN GND EN ILIMIT CSLEW VOUT 2009 2019 Adj.(3) VIN GND EN FAULT/ ILIMIT VOUT Notes: 1. Kickstart™ not available. 2. Fixed = Factory-programmed current limit. 3. I LIMIT = User adjustable current limit. 4. VUVLO = Variable UVLO (Previously called DLM). 5. Connect EP to GND.

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MIC20XX Family Member Pin Configuration Drawings Fixed Current Limit MIC20X3 VIN 1 5 GND NC VOUT NC 5-Pin SOT-23 (M5) 6-Pin MLF® (ML) (Top View) MIC20X4 VIN 1 5 GND ENABLE VOUT NC 5-Pin SOT-23 (M5) 6-Pin MLF® (ML) (Top View) MIC20X5 VIN 1 5 GND ENABLE VOUT FAULT/ VIN 52GND ENABLE VOUT FAULT/ CSLEW 5-Pin SOT-23 (M5) MIC2005-X.XL 6-Pin SOT-23 (M6) MIC20X5 6-Pin MLF® (ML) (Top View) MIC20X5 MIC20X6 VIN 52GND ENABLE VOUT VUVLO CSLEW 6-Pin SOT-23 (M6) 6-Pin MLF® (ML) (Top View)

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MIC20XX Family Member Pin Configuration Drawings (Continued) Adjustable Current Limit MIC20X7/20X8 VIN 52GND ENABLE VOUT ILIMIT CSLEW 6-Pin SOT-23 (M6) 6-Pin MLF® (ML) (Top View) MIC20X9 VIN 52GND ENABLE VOUT FAULT/ ILIMIT 6-Pin SOT-23 (M6) 6-Pin MLF® (ML) (Top View) MIC2005A VIN 1 5 GND ENABLE VOUT FAULT/ VIN 52GND ENABLE VOUT FAULT/ CSLEW 5-Pin SOT-23 (M5) 6-Pin SOT-23 (M6) MIC2009A VIN 52GND ENABLE VOUT FAULT/ ILIMIT 6-Pin SOT-23 (M6)

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These pin and signal descriptions aid in the differentiation of a pin from electrical signals and components connected to that pin. For example, VOUT is the switch’s output pin, while V OUT is the electrical signal output voltage present at the VOUT pin. Pin Descriptions Pin Name Type Description VIN Input Supply input. This pin provides power to both the output switch and the switch’s internal control circuitry. GND ─ Ground. EN Input Switch Enable (Input): FAULT/ Output Fault status. A logic LOW on this pin indicates the switch is in current limiting, or has been shut down by the thermal protection circuit. This is an open-drain output allowing logical OR’ing of multiple switches. CSLEW Input Slew rate control. Adding a small value capacitor between this pin and VIN slows turn-ON of the power FET. VOUT Output Switch output. The load being driven by the switch is connected to this pin. VUVLO Input Variable Under Voltage Lockout (VUVLO): Monitors the input voltage through a resistor divider between VIN and GND. Shuts the switch off if voltage falls below the threshold set by the resistor divider. Previously called VUVLO. ILIMIT Input Set current limit threshold via a resistor connected from ILIMIT to GND. EP Thermal On MLF packages connect EP to GND. Signal Descriptions Signal Name Type Description VIN Input Electrical signal input voltage present at the VIN pin. GND ─ Ground. VEN Input Electrical signal input voltage present at the ENABLE pin. VFAULT/ Output Electrical signal output voltage present at the FAULT/ pin. CSLEW Component Capacitance value connected to the CSLEW pin. VOUT Output Electrical signal output voltage present at the VOUT pin. VVUVLO_TH Internal VUVLO internal reference threshold voltage. This voltage is compared to the VUVLO pin input voltage to determine if the switch should be disabled. Reference threshold voltage has a typical value of 250mV. CLOAD Component Capacitance value connected in parallel with the load. Load capacitance. IOUT Output Electrical signal output current present at the VOUT pin. ILIMIT Internal Switch’s current limit. Fixed at factory or user adjustable.

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Absolute Maximum Ratings(1) Continuous Output Current Operating Ratings(2) Continuous Output Current Ambient Temperature Range (T Package Thermal Resistance(3) Electrical Characteristics(4) VIN = 5V, TA = 25°C unless otherwise specified. Bold indicates –40°C to +85°C limits; CIN = 1µF. Symbol Parameter Condition Min. Typ. Max. Units VIN Switch Input Voltage 2.5 5.5 V ILEAK Output Leakage Current(5) Switch = OFF, VOUT = 0V Active Low Enable, VEN = 1.5V Active High Enable, VEN = 0V 12 100 µA MIC2005A, MIC2009A, MIC2019A Switch = ON Active Low Enable, VEN = 0V Active High Enable, VEN = 1.5V 80 300 Switch = OFF Active Low Enable, V EN = 1.5V 8 15 IIN Supply Current (5) Switch = OFF Active High Enable, V EN = 0V 1 5 µA 170 220 RDS(ON) Power Switch Resistance VIN = 5V, IOUT = 100mA 275 mΩ MIC2005A ILIMIT Fixed Current Limit VOUT = 0.8 × VIN 0.5 0.7 0.9 A MIC2009A, MIC2019A IOUT = 0.9A, VOUT = 0.8 × VIN 172 211 263 IOUT = 0.5A, VOUT = 0.8 × VIN 152 206 263 IOUT = 0.2A, VOUT = 0.8 × VIN 138 200 263 CLF Variable Current Limit Factors IOUT = 0.1A, VOUT = 0.8 × VIN 121 192 263 V MIC2019A ILIMIT_2nd Secondary Current Limit VIN = 2.5V, VOUT = 0V 1 2 3 A Notes: 1. Exceeding the absolute maximu m rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Requires proper thermal mounting to achieve this performance 4. Specifications for packaged product only. 5. Check the Ordering Information section to deter mine which parts are Active High or Active Low.

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Electrical Characteristics(4) (Continued) VIN = 5V, TA = 25°C unless otherwise specified. Bold indicates –40°C to +85°C limits; CIN = 1µF. Symbol Parameter Condition Min. Typ. Max. Units MIC2003-MIC2009, MIC2013-MIC2019, MIC2005-X.XL Switch = ON Active Low Enable, VEN = 0V Active High Enable, VEN = 1.5V 80 330 Switch = OFF Active Low Enable, V EN = 1.5V 8 15 IIN Supply Current(5) Switch = OFF Active High Enable, V EN = 0V 1 5 µA 70 100 RDS(ON) Power Switch Resistance VIN = 5V, IOUT = 100mA 125 mΩ A MIC2005-0.5 ILIMIT Fixed Current Limit VOUT = 0.8 × VIN 0.5 0.7 0.9 A MIC2007, MIC2008, MIC2009, MIC2017, MIC2018, MIC2019 IOUT = 2.0A, VOUT = 0.8 × VIN 210 250 286 IOUT = 1.0A, VOUT = 0.8 × VIN 190 243 293 IOUT = 0.5A, VOUT = 0.8 × VIN 168 235 298 CLF Variable Current Limit Factors I OUT = 0.2A, VOUT = 0.8 × VIN 144 225 299 V MIC2013, MIC2014, MIC2015, MIC2016, MIC2017, MIC2018, MIC2019 ILIMIT_2nd Secondary Current Limit VIN = 2.5V, VOUT = 0V 2.2 4 6 A MIC2006, MIC2016 VUVLO_TH Variable UVLO Threshold 225 250 275 mV MIC20x4, MIC20x7 RDSCHG Load Discharge Resistance VIN = 5V, ISINK = 5mA 70 126 200 Ω MIC20X5, MIC20X6, MIC20X7, MIC20X8 ICSLEW C SLEW Input Current 0V ≤ VOUT ≤ 0.8VIN 0.175 µA

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Electrical Characteristics(4) (Continued) VIN = 5V, TA = 25°C unless otherwise specified. Bold indicates –40°C to +85°C limits; CIN = 1µF. Symbol Parameter Condition Min. Typ. Max. Units All Parts VIL (MAX) 0.5 VEN ENABLE Input Voltage(6) VIH (MIN) 1.5 V IEN ENABLE Input Current 0V ≤ VEN ≤ 5V 1 5 µA VIN Rising 2 2.25 2.5 UVLOTHRESHOLD Undervoltage Lock-Out Threshold VIN Falling 1.9 2.15 2.4 V UVLOHYSTERESIS Undervoltage Lock-Out Hysteresis 0.1 V VFAULT Fault Status Output Voltage IOL = 10mA 0.25 0.4 V TJ Increasing 145 OTTHRESHOLD Over-Temperature Threshold T J Decreasing 135 Note: 6. V IL(MAX) = Maximum positive voltage applied to the input which will be accepted by the device as a logic low. VIH(MAX) = Maximum positive voltage applied to the input which will be accepted by the device as a logic high.

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Symbol Parameter Condition Min. Typ. Max. Units tRISE Output Turn-on rise time RL = 10Ω, CLOAD = 1µF, VOUT = 10% to 90% CSLEW (7) = Open 500 1000 1500 µs Delay before asserting or releasing FAULT/ MIC2003 – MIC2009 MIC2009A, MIC2005A Time from current limiting to FAULT/ state change 20 32 49 tD_FAULT Delay before asserting or releasing FAULT/ MIC2013 – MIC2019 MIC2019A Time from IOUT continuously exceeding primary current limit condition to FAULT/ state change 77 128 192 ms tD_LIMIT Delay before current limiting MIC2013 – MIC2019 MIC2019A 77 128 192 ms tRESET Delay before resetting Kickstart™ current limit delay, t D_LIMIT MIC2013 – MIC2019 MIC2019A Out of current limit following a current limit event. 77 128 192 ms tON_DLY Output Turn-on Delay RL = 43Ω, CL = 120µF, VEN = 50% to VOUT = 10% *CSLEW = Open 1000 1500 µs tOFF_DLY Output Turn-off Delay RL = 43Ω, CL = 120µF, VEN = 50% to VOUT = 90% *CSLEW = Open 700 µs ESD(8) Symbol Parameter Condition Min. Typ. Max. Units VOUT and GND ±4 VESD_HB Electro Static Discharge Voltage: Human Body Model All other pins ±2 kV VESD_MCHN Electro Static Discharge Voltage; Machine Model All pins Machine Model ±200 V Notes: 7. Whenever C SLEW is present.

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90% 10% 90% 10% tFALLtRISE Rise and Fall Times ENABLE VOUT 50% 90% 10% tON_DLY tOFF_DLY 50% Switching Delay Times

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SUPPLY CURRENT (µA) VIN (V) Supply Current Output Enabled MIC20XX -40°C 85°C 25°C 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 SUPPLY CURRENT (µA) VIN (V) Supply Current Output Disabled (MIC20XX) -40°C 85°C 25°C 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 -40 -15 10 35 60 85 LEAKAGE CURRENT (µA) TEMPERATURE (°C) Switch Leakage Current (MIC20XX) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 ILIMIT (A) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20XX - 0.5) 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 -40 -15 10 35 60 85 ILIMIT (A) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20XX - 0.8) 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 -40 -15 10 35 60 85 ILIMIT (A) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20XX - 1.2) 100 120 140 160 180 200 22 . 533 . 544 . 555 . 5 RDS(ON) (mOhm) VIN (V) RDS(ON) vs. VIN (MIC20XX) -40°C 25°C 85°C 100 120 140 160 180 200 -40 -15 10 35 60 85 RDS(ON) (mOhm) TEMPERATURE (°C) RDS(ON) vs. Temperature (MIC20XX) 2.5V 3.3V 5.0V 200 400 600 800 1000 1200 -40 -15 10 35 60 85 CURRENT-LIMIT THRESHOLD (mA) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20X9 - 0.9A) RSET = 267Ohms 100 120 140 160 VIN – VOUT (mV) IOUT (A) VDROP vs. Temperature (MIC20XX-1.2) -40°C 25°C 85°C VIN = 5.0V 100 120 140 160 VIN – VOUT (mV) IOUT (A) VDROP vs. Temperature (MIC20XX-1.2) -40°C 25°C 85°C VIN = 3.3V 200 400 600 800 1000 1200 RSET (Ohms) ILIMIT (A) RSET vs. ILIMIT (MIC20X9) RSET = 242.62 ILIMIT 0.9538

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Typical Characteristics (Continued) 100 2 . 533 . 544 . 555 . 5 SUPPLY CURRENT (µA) VIN (V) Supply Current Output Enabled (MIC20XXA) -40°C 25°C 85°C 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 2 . 533 . 544 . 555 . 5 SUPPLY CURRENT (µA) VIN (V) Supply Current Output Disabled (MIC20XXA) -40°C 25°C 85°C 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 -40 -15 10 35 60 85 LEAKAGE CURRENT (µA) TEMPERATURE (°C) Switch Leakage Current (MIC20XXA) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 ILIMIT (A) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20X5A) 100 200 300 400 500 600 700 800 900 1000 -40 -15 10 35 60 85 ILIMIT (A) TEMPERATURE (°C) ILIMIT vs. Temperature (MIC20X9A (0.8A)) RSET = 267Ohms 500 1000 1500 2000 2500 00 . 2 0 . 4 0 . 6 0 . 81 RSET (Ohms) ILIMIT (A) RSET vs. ILIMIT (MIC20X9A) RSET = 212.23 ILIMIT 0.9587 100 150 200 250 2 . 533 . 544 . 555 . 5 RDS(ON) (mOhms) VIN (V) RDS(ON) vs. VIN (MIC20XXA) -40°C 25°C 85°C 100 150 200 250 -40 -15 10 35 60 85 RDS(ON) (mOhms) TEMPERATURE (°C) RDS(ON) vs. Temperature (MIC20XXA) 5.0V 2.5V 3.3V -40 -15 10 35 60 85FLAG DELAY (ms) TEMPERATURE (°C) Flag Delay vs. Temperature 2.5V3.3V 5.0V 100 120 140 160 VIN - VOUT (mV) IOUT (A) VDROP vs. Temperature (MIC20XXA) -40°C 25°C 85°C VIN = 5.0V 100 120 140 160 VIN - VOUT (mV) IOUT (A) VDROP vs. Temperature (MIC20XXA) -40°C 25°C 85°C VIN = 3.3V 2.05 2.1 2.15 2.2 2.25 2.3 -50 0 50 100 150 THRESHOLD (V) TEMPERATURE (°C) UVLO Threshold vs. Temperature V RISING V FALLING

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Functional Characteristics

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Functional Characteristics (Continued)

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Functional Characteristics (Continued)

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Figure 2. MIC20XX Family Functional Diagram

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current will flow from VOUT to VIN. when the load exceeds the se t over-current threshold. switch goes into thermal shutdown. Only parts in bold have Kickstart™. of Kickstart™ operation is shown in Figure 3. Figure 3. Kickstart™ Operation secondary current limit, whichever is less. heating (effect exaggerated for emphasis). D. Current limiting initiated. FAULT/ goes LOW. F. Thermal shutdown followe d by thermal cycling. G. Excessive load released, normal load remains. MIC201X drops out of current limiting.

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Variable Undervoltage Lock Out (VUVLO) 2003 2004 2005X 2006 2007 2008 2009X 2013 2014 2015 2016 2017 2018 2019X Only parts in bold have VUVLO. VUVLO functions as an input voltage monitor when the switch in enabled. The VIN pin is monitored for a drop in voltage, indicating excessive loading of the V IN supply. When V IN is less than the V ULVO threshold voltage (VVUVLO_TH) for 32ms or more, the MIC20XX disables the switch to protect the supply and allow V IN to recover. After 128ms has elapsed, the MIC20X6 enables switch. This disable and enable cycling will continue as long as V IN deceases below the V UVLO threshold voltage (V VUVLO_TH) which has a typical value of 250mV. The V UVLO voltage is commonly established by a voltage divider from VIN-to-GND. ENABLE 2003 2004 2005X 2006 2007 2008 2009X 2013 2014 2015 2016 2017 2018 2019X Only parts in bold have ENABLE pin. ENABLE pin is a logic compatible input which activates the main MOSFET switch thereby providing power to the VOUT pin. ENABLE is either an active HIGH or active LOW control signal. The MIC20XX can operate with logic running from supply voltages as low as 1.5 V. ENABLE may be driven higher than V IN, but no higher than 5.5V and not less than –0.3V. FAULT/ 2003 2004 2005X 2006 2007 2008 2009X 2013 2014 2015 2016 2017 2018 2019X Only parts in bold have FAULT/ pin. FAULT/ is an N-channel open-drain output, which is asserted (LOW true) when switch either begins current limiting or enters thermal shutdown. FAULT/ asserts after a brief delay when events occur that may be considered possible faults. This delay insures that FAULT/ is asserted only upon valid, enduring, over-current conditions and that transitory event error reports are filtered out. In MIC200X FAULT/ asserts after a brief delay period, of 32ms typical. After a fault clears, FAULT/ remains asserted for the delay period of 32ms MIC201X’s FAULT/ asserts at the end of the Kickstart™ period which is 128ms typical. This masks initial current surges, such as would be seen by a motor load starting up. If the load current remains above the current limit threshold after the Kickstar t™ has timed out, then the FAULT/ will be asserted. After a fault clears, FAULT/ remains asserted for the delay of 128ms. Because FAULT/ is an open-drain it must be pulled HIGH with an external resistor and it may be wire-OR’d with other similar outputs, sharing a single pull-up resistor. FAULT/ may be tied to a pull-up voltage source which is higher than V IN, but no greater than 5.5V. Soft-Start Control Large capacitive loads can create significant inrush current surges when charged through the switch. For this reason, the MIC20XX family of switches provides a built-in soft-start control to limit the initial inrush currents. Soft-start is accomplished by controlling the power MOSFET when the ENABLE pin enables the switch. C SLEW 2003 2004 2005X 2006 2007 2008 2009X 2013 2014 2015 2016 2017 2018 2019X Only parts in bold have CSLEW pin. (Not available in 5-pin SOT-23 packages) The C SLEW pin is provided to increase control of the output voltage ramp at turn-on. This input allows designers the option of decreasing the output’s slew rate (slowing the voltage rise) by adding an external capacitance between the C SLEW and VIN pins. Thermal Shutdown Thermal shutdown is employed to protect the MIC20XX family of switches from damage should the die temperature exceed safe operating levels. Thermal shutdown shuts off the output MOSFET and asserts the FAULT/ output if the die temperature reaches 145°C. The switch will automatically resume operation when the die temperature cools down to 135°C. If resumed operation results in reheat ing of the die, another shutdown cycle will occur and the switch will continue cycling between ON and OFF states until the overcurrent condition has been resolved. Depending on PCB layout, package type, ambient temperature, etc., hundreds of milliseconds may elapse from the incidence of a fault to the output MOSFET being shut off. This delay is due to thermal time constants within the system itself. In no event will the device be damaged due to thermal overload because die temperature is monitored continuously by on-chip circuitry.

Micrel, Inc. MIC20xx Family August 2011

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Application Information

The MIC2009/2019’s current limit is user programmable and controlled by a resistor connected between the I LIMIT pin and GND. The value of this resistor is determined by the following equation: SET LIMIT R LF)itFactor(CCurrentLimI = or (A) I LF)itFactor(CCurrentLimR LIMIT SET = For example: Set I LIMIT = 1.25A Looking in the Electrical specifications we will find CLF at ILIMIT = 1A. Min Typ Max Units 190 243 293 V Table 1. CLF at ILIMIT = 1A values of CLF and the calculated value of RSET. Table 2. MIC20x9A RSET Table Table 3. MIC20x9 RSET Table

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internal heating of the switch. remains constant throughout the remainder of the test.

1. In this demonstration, V OUT is being controlled and

load and the limiting current. Figure 4. IOUT in Current Limiting for VIN - VOUT < 1V Figure 5. IOUT in Current Limiting for VIN - VOUT > 1V Figure 6. Normalized Output Current vs. Output Voltage

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Figure 7. Normalized Output Current vs. Output Voltage Only parts in bold have CSLEW pin. (Not available in 5-pin SOT-23 packages). Figure 8. CSLEW vs. Turn-On, Delay and Rise Times Only parts in bold have VUVLO pin and functionality. whatever the system itself is drawing. resistor divider driving the VUVLO pin.

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trip point MIC20X6 resumes normal operation. Figure 9. VUVLO Operation Figure 10. VUVLO Application Circuit the value of R1 sets the trip voltage VTRIP. resistor value for R2 is 100kΩ.

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result in erratic or unpredictable operation. Only parts in bold have Kickstart™. (Not available in 5-pin SOT-23 packages). normal current limiting function provided by the switch. normal (primary) current limiting goes into action. supply can result in currents of many tens of amperes. occurs, Kickstart™ will be terminated and I OUT Æ 0A. Figure 11. Kickstart™ Only parts in bold have automatic load discharge. desirable to quickly remove charge from the V OUT pin. USB, 1394, PCMCIA, and CableCARD™. internal resistances is typically 126Ω. practice and required for proper operation of the switch. quality, low-ESR capacitors should be chosen.

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voltage appears across the switch’s power MOSFET. thermal limiting will be invoked. Figure 12. Die Temperature vs. IOUT

Micrel, Inc. MIC20xx Family August 2011

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Package Information

5-Pin SOT-23 (M5) 6-Pin SOT-23 (M6)

Micrel, Inc. MIC20xx Family August 2011

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Package Information (Continued)

6 Pin 2mm x 2mm MLF® (ML)

Section 1.01 MICREL, INC. 2180 FORTUN E DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical impla into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A 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 indemnify Micrel for any damages resulting from such use or sale. can nt © 2009 Micrel, Incorporated.