MP62180/MP62181 3.3V/5V, Single-Channel 2A Current-Limited Power Distribution Switch The Future of Analog IC Technology DESCRIPTION FEATURES The MP62180/MP62181 Power Distribution Switch features internal current limiting to prevent damage to host devices due to faulty load conditions. The MP62180/MP62181 operates from a 3.3V or 5V nominal input voltage and includes an 85mΩ Power MOSFET to handle up to 2A continuous load with a 2.8A typical current limit. The MP62180/MP62181 has built-in protection for both over current and increased thermal stress. For over-current protection (OCP), the device will limit the current by going into a constant current mode. • • • • • • • • • • • When continuous output overload condition exceeds power dissipation of the package, the thermal protection will shut the part off. The device will recover once the device temperature reduces to approx 120°C. APPLICATIONS 2A Continuous Current 2.8A accurate Current Limit 2.7V to 5.5V Supply Range 90uA Quiescent Current 75mΩ MOSFET Thermal-Shutdown Protection Under-Voltage Lockout 8ms FLAG Deglitch Time No FLAG Glitch During Power Up Reverse Current Blocking Active High & Active Low Options • • • • • • • The MP62180/MP62181 is available in QFN8E, MSOP8E and SOIC8 packages. Smartphone and PDA Portable GPS Device Notebook PC Set-top-box Telecom and Network Systems PC Card Hot Swap USB Power Distribution “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 3.5V/5V Input 1 GND 2, 3 IN 4 MP62180 EN* OUT 6, 7, 8 To VBUS USB Ports FLAG 5 SINGLE-CHANNEL * EN is active high for MP62181 MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 1 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH ORDERING INFORMATION Part Number Enable Switch Maximum Typical ShortContinuous Circuit Current Load Current @ TA=25C MP62180DS SOIC8 QFN8E (2mm x 3mm) MSOP8E SOIC8 QFN8E (2mm x 3mm) MSOP8E Active Low MP62180DD MP62180DH MP62181DS Single 2A 2.8A Active High MP62181DD Top Marking Package MP62181DH Free Air Temperature (TA) 62180DS 62180DD 62180DH 62181DS –40°C to +85°C 62181DD 62181DH * For Tape & Reel, add suffix –Z (e.g. MP62180DH–Z). For RoHS Compliant Packaging, add suffix –LF (e.g. MP62180DH–L) PACKAGE REFERENCE TOP VIEW TOP VIEW TOP VIEW GND 1 8 OUT GND 1 8 OUT IN 2 7 OUT IN 2 7 OUT GND 1 8 OUT IN 3 6 OUT IN 3 6 OUT IN 2 7 OUT EN* 4 5 FLAG EN* 4 5 FLAG IN 3 6 OUT EN* 4 5 FLAG EXPOSED PAD ON BACKSIDE CONNECT TO GND MSOP8E EXPOSED PAD ON BACKSIDE CONNECT TO GND QFN8E (2mm x 3mm) SOIC8 MP62180 *: EN is active high for MP62181 ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (3) IN .................................................-0.3V to +6.0V EN, FLAG, OUT to GND ..............-0.3V to +6.0V (2) Continuous Power Dissipation (TA = +25°C) MSOP8E .................................................... 2.3W QFN8E (2mm x 3mm)................................ 2.3W SOIC8 ........................................................ 1.4W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature............... –65°C to +150°C Operating Temperature.............. –40°C to +85°C MSOP8E................................. 55 ...... 12... °C/W QFN8E (2mm x 3mm) ............ 55 ...... 12... °C/W SOIC8..................................... 90 ...... 42... °C/W θJA θJC Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD(MAX)=(TJ(MAX)TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) Measured on JESD51-7, 4-layer PCB. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH ELECTRICAL CHARACTERISTICS (4) VIN=5V, TA=+25°C, unless otherwise noted. Parameter IN Voltage Range Supply Current Shutdown Current Off Switch Leakage Condition Min Under-voltage Lockout Under-voltage Hysteresis FET On Resistance EN Input Logic High Voltage EN Input Logic Low Voltage FLAG Output Logic Low Voltage FLAG Output High Leakage Current Thermal Shutdown Thermal Shutdown Hysteresis Device Active, IOUT=0 Device Disable, VOUT=float, VIN=5.5V Device Disable, VIN=5.5V Current Ramp (slew rate≤100A/s) on Output Rising Edge IOUT=100mA (-40°C≤ TA ≤85°C) V µA µA µA 2.8 3.5 A 3.1 4 A 2.65 1.95 MSOP8E QFN8E (2mm x 3mm) SOIC8 250 75 120 V mV mΩ 75 120 mΩ 85 130 0.8 0.4 mΩ V V V 1 µA 0.5 0.5 3 °C °C ms ms ms ms ms ISINK=5mA VIN=VFLAG=5.5V Turn Off Time, Toff (8) CL=100µF, RL=5Ω FLAG Deglitch Time EN Input Leakage Reverse Leakage Current 5.5 120 2 Turn On Time, Ton (7) VOUT Falling Time, Tf (6) Units 90 1 1 2.1 VIN=5.5V, CL=1uF, RL=5Ω VIN=2.7V, CL=1uF, RL=5Ω VIN=5.5V, CL=1uF, RL=5Ω VIN=2.7V, CL=1uF, RL=5Ω CL=100µF, RL=5Ω VOUT Rising Time, Tr (5) Max 2.7 Current Limit Trip Current Typ 140 20 0.9 1.7 4 -1 OUT=5.5V, IN=GND 8 0.2 10 ms 15 ms µA µA NOTE: 4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization. 5) Measured from 10% to 90%. 6) Measured from 90% to 10%. 7) Measured from (50%) EN signal to (90%) output signal. 8) Measured from (50%) EN signal to (10%) output signal. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 3 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH PIN FUNCTIONS Pin # SOIC8 Pin # MSOP8E Pin # QFN8E Name Description 1 2, 3 1 2, 3 1 2, 3 GND IN Ground. Input Voltage. Accepts 2.7V to 5.5V input. 4 4 4 ——— 5 5 5 FLAG IN-to-OUT Over-current, active-low output flag. Open-Drain. 6, 7, 8 6, 7, 8 6, 7, 8 OUT IN-to-OUT Power-Distribution Output (for all 3 output pins) EN Active Low: (MP62180), Active High: (MP62181) TYPICAL PERFORMANCE CHARACTERISTICS TA = +25ºC, unless otherwise noted. OUTX RL tf tr CL VO(OUTX) 90% 10% 90% 10% TEST CIRCUIT 50% 50% 50% VI(ENX) 50% VI(ENX) toff ton VO(OUTX) 90% ton VO(OUTX) 10% toff 90% 10% VOLTAGE WAVEFORMS Figure 1—Test Circuit and Voltage Waveforms MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN =5V, VEN=0V for MP62180 or 5V for MP62181, CL=2.2µF, TA = +25ºC, unless otherwise noted. Supply Current, Output Enabled vs. Input Voltage 100 0.25 3.5 TURN OFF DELAY (ms) 3 2.5 2 1.5 1 2.5 3 3.5 4 4.5 5 5.5 95 0.2 90 85 0.15 80 0.1 75 70 0.05 65 0 2.5 6 3 3.5 INPUT VOLTAGE (V) 5 5.5 60 2.5 6 Static Drain-Source On-State Resistance vs. Input Voltage 170 160 150 140 130 120 110 100 90 80 70 2.5 15 30 45 60 75 90 Current Limit vs. Input Voltage 3.2 TRIP CURRENT (A) CURRENT LIMIT (A) 3.1 2.7 3 3.5 4 4.5 5 5.5 6 300 Vin=2.7V 250 200 Vin=3.3V 150 Vin=5.5V Vin=5V 100 Vin=4.5V 50 0 0 2.5 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 6 0.4 0.8 1.2 1.6 2 OUTPUT CURRENT (A) Current Limit Response Time vs. Peak Current 3.4 30 3.2 25 20 3 15 2.8 10 2.6 2.6 6 350 Threshold Trip Current vs. Input Voltage 2.8 5 5.5 Input to Output Voltage vs. Load Current INPUT VOLTAGE (V) 2.9 4 4.5 IO=2A IO=0.1A 3 3 3.5 INPUT VOLTAGE (V) INPUT VOLTAGE (V) Static Drain-Source On-State Resistance Variation vs. Ambient Temperature 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -45 -30 -15 0 4 4.5 INPUT TO OUTPUT VOLTAGE (mV) TURN ON DELAY (ms) 4 2.4 2.5 5 0 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 6 2 5 8 11 14 PEAK CURRENT (A) MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 17 5 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN =5V, VEN=0V for MP62180 or 5V for MP62181, CL=2.2µF, TA = +25ºC, unless otherwise noted. VOUT 2V/div VOUT 2V/div VOUT 2V/div EN 5V/div EN 5V/div EN 5V/div 4s/div Short Circuit Current, Device Enabled into Short VOUT 2V/div IOUT 1A/div EN 5V/div EN 5V/div Threshold Trip Current with Ramped Load on Enabled Device VOUT 2V/div IOUT 1A/div 1ms/div Ramped Load on Enabled Device 470uF 220uF Flag 5V/div 100uF IOUT 1A/div EN 5V/div IOUT 1A/div Flag 5V/div IOUT 2A/div 2ms/div MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2ms/div 6 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH FUNCTION BLOCK DIAGRAM + UVLO Vref -- IN Current Sense OUT Charge Pump -Logic AMP + FLAG EN* Deglitch Thermal Sense GND *: EN is active high for MP62181; EN is active low for MP62180 Figure2—Function Block Diagram DETAILED DESCRIPTION Over Current When the load exceeds trip current (minimum threshold current triggering constant-current mode) or a short is present, MP62180/MP62181 switches into to a constant-current mode (current limit value). MP62180/MP62181 will be shutdown only if the overcurrent condition stays long enough to trigger thermal protection. Trigger overcurrent protection for different overload conditions occurring in applications: 1) The output has been shorted or overloaded before the device is enabled or input applied. MP62180/MP62181 detects the short or overload and immediately switches into a constant-current mode. 2) A short or an overload occurs after the device is enabled. After the current-limit circuit has been tripped (reached the trip current threshold), the device switches into constantcurrent mode. However, high current may flow for a short period of time before the current-limit circuit can react. 3) Output current has been gradually increased beyond the recommended operating current. The load current rises until the trip current threshold is reached or until the thermal limit of the device is exceeded. The MP62180/MP62181 is capable of delivering current up to the trip current threshold without damaging the device. Once the trip threshold has been reached, the device switches into its constant-current mode. Flag Response The FLAG pin is an open drain configuration. This FAULT will report a fail mode after an 8ms deglitch timeout. This is used to ensure that no false fault signals are reported. This internal deglitch circuit eliminates the need for extend components. The FLAG pin is not deglitched during an over temp. or a voltage lockout. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 7 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH Thermal Protection The purpose of thermal protection is to prevent damage in the IC by allowing exceptive current to flow and heating the junction. The die temperature is internally monitored until the thermal limit is reached. Once this temperature is reached, the switch will turn off and allow the chip to cool. The switch has a built-in hysteresis. Under-voltage Lockout (UVLO) This circuit is used to monitor the input voltage to ensure that the MP62180/MP62181 is operating correctly. This UVLO circuit also ensures that is no operation until the input voltage reaches the minimum spec. Enable The logic pin disables the switch to reduce overall supply current .Once the EN pin reaches logic enable threshold, the MP62180/MP62181 is enabled. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 8 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH APPLICATION INFORMATION Power-Supply Considerations Over 10µF capacitor between IN and GND is recommended. This precaution reduces powersupply transients that may cause ringing on the input and improves the immunity of the device to short-circuit transients. In order to achieve smaller output load transient ripple, placing a high-value electrolytic capacitor on the output pin(s) is recommended when the load is heavy. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 9 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH PACKAGE INFORMATION MSOP8E (EXPOSED PAD) 0.087(2.20) 0.099(2.50) 0.114(2.90) 0.122(3.10) 5 8 0.114(2.90) 0.122(3.10) PIN 1 ID (NOTE 5) 0.187(4.75) 0.199(5.05) 0.062(1.58) 0.074(1.88) Exposed Pad 0.010(0.25) 0.014(0.35) 4 1 0.0256(0.65)BSC BOTTOM VIEW TOP VIEW GAUGE PLANE 0.010(0.25) 0.030(0.75) 0.037(0.95) 0.043(1.10)MAX SEATING PLANE 0.002(0.05) 0.006(0.15) FRONT VIEW NOTE: 0.181(4.60) 0.040(1.00) 0.016(0.40) 0.004(0.10) 0.008(0.20) SIDE VIEW 0.100(2.54) 0.075(1.90) 0o-6o 0.016(0.40) 0.026(0.65) 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) PIN 1 IDENTIFICATION HAS HALF OR FULL CIRCLE OPTION. 6) DRAWING MEETS JEDEC MO-187, VARIATION AA-T. 7) DRAWING IS NOT TO SCALE. 0.0256(0.65)BSC RECOMMENDED LAND PATTERN MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 10 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH QFN8E (2mm x 3mm) 2.90 3.10 PIN 1 ID MARKING 0.30 0.50 0.18 0.30 1.90 2.10 PIN 1 ID INDEX AREA 1.65 1.85 8 PIN 1 ID SEE DETAIL A 1 1.50 1.70 0.50 BSC 4 5 TOP VIEW BOTTOM VIEW PIN 1 ID OPTION A 0.30x45” TYP. 0.80 1.00 PIN 1 ID OPTION B R0.20 TYP. 0.20 REF 0.00 0.05 SIDE VIEW DETAIL A 2.90 0.70 NOTE: 1.70 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX. 4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VCED-2. 5) DRAWING IS NOT TO SCALE. 0.25 1.60 0.50 RECOMMENDED LAND PATTERN MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 11 MP62180/MP62181 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH SOIC8 0.189(4.80) 0.197(5.00) 8 0.050(1.27) 0.024(0.61) 5 0.063(1.60) 0.150(3.80) 0.157(4.00) PIN 1 ID 1 0.228(5.80) 0.244(6.20) 0.213(5.40) 4 TOP VIEW RECOMMENDED LAND PATTERN 0.053(1.35) 0.069(1.75) SEATING PLANE 0.004(0.10) 0.010(0.25) 0.013(0.33) 0.020(0.51) 0.0075(0.19) 0.0098(0.25) SEE DETAIL "A" 0.050(1.27) BSC SIDE VIEW FRONT VIEW 0.010(0.25) x 45o 0.020(0.50) GAUGE PLANE 0.010(0.25) BSC 0o-8o 0.016(0.41) 0.050(1.27) DETAIL "A" NOTE: 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA. 6) DRAWING IS NOT TO SCALE. NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP62180_MP62181 Rev. 0.9 www.MonolithicPower.com 2/23/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 12