MP62071 3.3V/5V, Single-Channel 0.8A Current-Limited Power Distribution Switch The Future of Analog IC Technology DESCRIPTION FEATURES The MP62071 Power Distribution Switch features internal current limiting to prevent damage to host devices due to faulty load conditions. The MP62071 operates from a 3.3V or 5V nominal input voltage and includes a 90mΩ Power MOSFET to handle up to 0.8A continuous load with a 1.25A typical current limit. The MP62071 has built-in protection for both over current and increased thermal stress. For overcurrent 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. The MP62071 is available in 8-PIN MSOP8E and SOIC8E package with exposed pad. 0.8A Continuous Current Accurate Current Limit 2.7V to 5.5V Supply Range 140uA Quiescent Current 90mΩ MOSFET Thermal-Shutdown Protection Under-Voltage Lockout 8ms FLAG Deglitch Time No FLAG Glitch During Power Up Reverse Current Blocking MSOP8E and SOIC8E package UL Recognized: E322138 APPLICATIONS • • • • • 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 Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 3.3V/5V Input 1 GND MP62071 2,3 IN 4 EN OUT 6,7,8 To VBUS USB Ports FLAG 5 SINGLE-CHANNEL UL Recognized Component MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 1 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH ORDERING INFORMATION Part Number Enable Switch Maximum Continuous Load Current Typical ShortCircuit Current @ TA=25C Package Temperature MP62071DH Active High Single 0.8A 1.25A MSOP8E –40°C to +85°C MP62071DN Active High Single 0.8A 1.25A SOIC8E –40°C to +85°C For Tape & Reel, add suffix –Z (eg. MP62071DN–Z); For RoHS Compliant Packaging, add suffix –LF(eg. MP62071DN–LF–Z) PACKAGE REFERENCE TOP VIEW TOP VIEW GND 1 8 OUT IN 2 7 OUT OUT IN 3 6 OUT FLAG EN 4 5 FLAG GND 1 8 OUT IN 2 7 OUT IN 3 6 EN 4 5 EXPOSED PAD ON BACKSIDE CONNECT TO GND EXPOSED PAD ON BACKSIDE CONNECT TO GND MSOP8E SOIC8E MP62071 Single-Channel ABSOLUTE MAXIMUM RATINGS (1) IN ....................................................-0.3V to +6V ON, FLAG, OUT to GND.................-0.3V to +6V Continuous Power Dissipation (TA = +25°C) (2) MSOP8E .................................................... 2.3W SOIC8E...................................................... 2.5W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature............... –65°C to +150°C Operating Temperature.............. –40°C to +85°C MP62071 Rev. 0.9 9/18/2009 Thermal Resistance (3) θJA θJC MSOP8E................................. 55 ...... 12... °C/W SOIC8E .................................. 50 ...... 10... °C/W 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.. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 2 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH ELECTRICAL CHARACTERISTICS (4) VIN=5V, TA=+25°C, unless otherwise noted. Parameter Condition IN Voltage Range Supply Current Shutdown Current Off Switch Leakage Min Typ Max Units 5.5 160 V μA μA μA 1250 1500 mA 1.45 1.9 A 2.65 0.8 0.4 V mV mΩ V V V 1 μA 2.7 EN=High, IOUT=0 Device Disable, VOUT=float, VIN=5.5V Device Disable, VIN=5.5V Current Limit 140 1 1 1000 Trip Current 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 Current Ramp (slew rate≤100A/s) on Output Rising Edge 1.95 250 90 IOUT=100mA and -40°C<TA<85°C 130 2 ISINK=5mA VIN=VFLAG=5.5V 140 °C 20 °C VIN=5.5V, CL=1uF, RL=5Ω 0.9 1.7 VOUT Falling Time, Tf (5) VIN=2.7V, CL=1uF, RL=5Ω VIN=5.5V, CL=1uF, RL=5Ω VIN=2.7V, CL=1uF, RL=5Ω Turn On Time, Ton (6) CL=100μF, RL=5Ω 3 CL=100μF, RL=5Ω 10 ms ms ms ms ms ms 15 ms Thermal Shutdown Hysteresis VOUT Rising Time, Tr (5) Turn Off Time, Toff (6) FLAG Deglitch Time 0.5 0.5 4 EN Input Leakage Reverse Leakage Current OUT=5.5V, IN=GND 8 1 0.2 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 (50%) EN signal to (90%) output signal. MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 3 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH PIN FUNCTIONS MSOP8E SOIC8E Name Description 1 2, 3 4 GND IN EN Ground. Input Voltage. Accepts 2.7V to 5.5V input. Active High. 5 FLAG IN-to-OUT Over-current, active-low output flag. Open-Drain. 6, 7, 8 OUT IN-to-OUT Power-Distribution Output (for all 3 output pins). 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 MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 4 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS TA = +25ºC, VIN=5V,VEN=5V,CL=2.2uF, unless otherwise noted. 3 0.3 2.5 0.25 TURN OFF DELAY (ms) 2 1.5 1 0.5 0 150 140 0.2 130 0.15 120 0.1 110 0.05 100 2.5 0 2.5 3 3.5 4 4.5 5 INPUT VOTAGE (V) 5.5 2.5 6 15 30 45 60 75 90 STATIC DRAIN-SOURCE ON-STATE 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -45 -30 -15 0 3.5 4 4.5 5 INPUT VOTAGE (V) 5.5 6 3 THRESHOLD TRIP CURRENT (A) CURRENT LIMIT (A) 1.25 1.15 1.05 0.95 2.5 3 3.5 4 4.5 5 INPUT VOLTAGE (V) MP62071 Rev. 0.9 9/18/2009 5.5 6 4.5 5 5.5 6 IOUT=0.8 A 140 130 120 110 100 90 80 70 Current Limit vs. Input Voltage 1.35 4 Input to Output Voltage vs. Load Current 2.5 3 3.5 4 4.5 5 5.5 6 140 Vin=5V 120 Vin=3.3V 100 Vin=4.5V Vin=5.5V 80 60 Vin=2.7V 40 20 0 0 0.2 0.4 0.6 0.8 1 1.2 OUTPUT CURRENT (A) INPUT VOLTAGE (V) 1.45 3.5 INPUT VOTAGE (V) Static Drain-Source On-State Resistance vs. Input Voltage Static Drain-Source On-State Resistance Variation vs. Ambient Temperature IO=0.1A 3 INPUT TO OUTPUT VOLTAGE (mV) TURN ON DELAY (ms) Supply Current, Output Enabled vs. Input Voltage Threshold Trip Current vs. Input Voltage 35 1.6 Current Limit Response Time vs. Peak Current 30 1.5 25 1.4 20 1.3 15 1.2 10 1.1 5 0 1 2 2.5 3 3.5 4 4.5 5 INPUT VOLTAGE (V) 5.5 6 0 2 4 6 8 10 12 14 PEAK CURRENT (A) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 5 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS TA = +25ºC, VIN=5V, VEN=5V, CL=2.2uF, unless otherwise noted. (continued) VOUT 2V/div VOUT 2V/div VOUT 2V/div EN 5V/div EN 5V/div EN 5V/div Short Circuit Current, Device Enabled into Short VOUT 2V/div IOUT 500mA/div EN 5V/div EN 5V/div Threshold Trip Current with Ramped Load on Enabled Device VOUT 2V/div IOUT 500mA/div Ramped Load on Enabled Device Flag 5V/div IOUT 500mA/div IOUT 1A/div EN 5V/div 2ms/div MP62071 Rev. 0.9 9/18/2009 Flag 5V/div IOUT 500mA/div 1ms/div 2ms/div www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 6 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH FUNCTION BLOCK DIAGRAM + UVLO Vref -IN Current Sense -- -- -- OUT -- -- -- -- Charge Pump -Logic --- -- -- EN AMP + FLAG Deglitch -- -- Thermal Sense GND Figure2—Functional Block Diagram MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 7 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH DETAILED DESCRIPTION Over Current When the load exceeds trip current (minimum threshold current triggering constant-current mode) or a short is present, MP62071 switches into to a constant-current mode (current limit value). MP62071 will be shutdown only if the over current condition stays long enough to trigger thermal protection. Trigger over current protection for different overload conditions occurring in applications: 1) The output has been shorted or overloaded before the device is enabled or input applied. MP62071 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. MP62071 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 constantcurrent mode. MP62071 Rev. 0.9 9/18/2009 Flag Response The FLAG pin is an open drain configuration. This FAULT will report a fail mode after 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 over temperature or voltage lockout. 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 MP62071 is operating correctly. This UVLO circuit also ensures that there 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 HIGH, the MP62071 is enabled. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 8 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH APPLICATION INFORMATION Power-Supply Considerations Over 10μF capacitor between IN and GND is recommended. This precaution reduces power-supply 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. MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 9 MP62071 –SINGLE CHANNEL 0.8A 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 MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 10 MP62071 –SINGLE CHANNEL 0.8A CURRENT-LIMITED POWER DISTRIBUTION SWITCH SOIC8E (EXPOSED PAD) 0.189(4.80) 0.197(5.00) 0.124(3.15) 0.136(3.45) 8 5 0.150(3.80) 0.157(4.00) PIN 1 ID 1 0.228(5.80) 0.244(6.20) 0.089(2.26) 0.101(2.56) 4 TOP VIEW BOTTOM VIEW SEE DETAIL "A" 0.051(1.30) 0.067(1.70) SEATING PLANE 0.000(0.00) 0.006(0.15) 0.013(0.33) 0.020(0.51) 0.0075(0.19) 0.0098(0.25) SIDE VIEW 0.050(1.27) BSC FRONT VIEW 0.010(0.25) x 45o 0.020(0.50) GAUGE PLANE 0.010(0.25) BSC 0.050(1.27) 0.024(0.61) 0o-8o 0.016(0.41) 0.050(1.27) 0.063(1.60) DETAIL "A" 0.103(2.62) 0.213(5.40) NOTE: 0.138(3.51) RECOMMENDED LAND PATTERN 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 BA. 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. MP62071 Rev. 0.9 9/18/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 11