MP62260/MP62261 3.3V/5V, Single-Channel 2A Current-Limited Power Distribution Switch The Future of Analog IC Technology FEATURES DESCRIPTION • • • • • • • • • • • The MP62260/MP62261 Power Distribution Switch features internal current limiting to prevent damage to host devices due to faulty load conditions. The MP62260/MP62261 operates from 2.7V to 5.5V nominal input voltage and includes a 45mΩ Power MOSFET to handle up to 2A continuous load with a 3A typical current limit. The MP62260/MP62261 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. 2A Continuous Current 3A accurate Current Limit 2.7V to 5.5V Supply Range 90μA Quiescent Current 50mΩ 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 APPLICATIONS 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 MP62260/MP62261 is available in SOIC8 package. 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 3.3V / 5V Input 1 GND MP62260/ MP62261 2, 3 IN 4 EN* OUT FLAG 6, 7, 8 To VBUS USB Ports 5 SINGLE-CHANNEL (*is active high for MP62261) MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 1 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH ORDERING INFORMATION Part Number Enable MP62260DS* Active Low MP62261DS Active High Switch Maximum Continuous Load Current Single Single 2A 2A Typical ShortCircuit Current Package @ TA=25C 3A 3A Top Free Air Marking Temperature (TA) SOIC8 SOIC8 TBD TBD -40°C to +85°C * For Tape & Reel, add suffix –Z (e.g. MP62260DS–Z). For RoHS Compliant Packaging, add suffix –LF (e.g. MP62260DS–LF) PACKAGE REFERENCE TOP VIEW GND 1 8 OUT IN 2 7 OUT IN 3 6 OUT EN* 4 5 FLAG SOIC8 MP62260/MP62261 Single-Channel (*is active high for MP62261) ABSOLUTE MAXIMUM RATINGS (1) IN .................................................-0.3V to +6.0V EN, FLAG, OUT to GND ..............-0.3V to +6.0V Continuous Power Dissipation (TA = +25°C) (2) SOIC8 ........................................................ 1.4W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature............... -65°C to +150°C Operating Junct. Temp. (TJ)..... -40°C to +125°C Thermal Resistance (3) θJA θJC SOIC8..................................... 90 ...... 42... °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. MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH ELECTRICAL CHARACTERISTICS (4) VIN=5V, TA=+25°C, unless otherwise noted. Parameter Condition IN Voltage Range Min Typ Max Units 5.5 V 90 120 μA 2.7 Supply Current Device Enabled, IOUT=0 Shutdown Current Device Disabled, VOUT=float, VIN=5.5V 1 1.5 μA Off Switch Leakage Device Disabled, VIN=5.5V 1 1.5 μA 2.2 3 3.8 A 2.3 3.3 4.3 A 1.95 2.30 2.65 V Current Limit Trip Current Under-voltage Lockout Current Ramp (slew rate≤100A/s) on Output Rising Edge 70 Under-voltage Hysteresis FET On Resistance 250 IOUT=100mA and -40°C≤TA≤85°C EN Input Logic High Voltage 50 mV 75 2 mΩ V EN Input Logic Low Voltage 0.8 V FLAG Output Logic Low Voltage ISINK=5mA 0.16 0.4 V FLAG Output High Leakage Current VIN=VFLAG=5.5V 0.01 1 μA Thermal Shutdown 140 °C Thermal Shutdown Hysteresis 20 °C VIN=5.5V, CL=1μF, RL=5Ω 0.4 0.9 2 ms VIN=2.7V, CL=1μF, RL=5Ω 0.8 1.7 3 ms VIN=5.5V, CL=1μF, RL=5Ω 0.005 0.1 0.5 ms VIN=2.7V, CL=1μF, RL=5Ω 0.005 0.075 0.5 ms CL=100μF, RL=5Ω 0.8 1.6 3 ms CL=100μF, RL=5Ω 1 2.6 10 ms FLAG Deglitch Time 4 8 15 ms EN Input Leakage -1 0.01 1 μA 0.2 1 μA VOUT Rising Time, Tr (5) VOUT Falling Time, Tf (5) Turn On Time, Ton (6) Turn Off Time, Toff (6) Reverse Leakage Current VOUT=5.5V, VIN=GND Notes: 4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization. 5) Measured from 10% to 90% output signal. 6) Measured from (50%) EN signal to (90%) output signal. MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 3 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH PIN FUNCTIONS Pin # SOIC8 Name Description 1 GND Ground. 2, 3 IN Input Voltage. Accepts 2.7V to 5.5V input. ——— 4 Active Low: (MP62260), Active High: (MP62261) EN* _________ 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. OUT RL tf tr CL 90% Vout 10% TEST CIRCUIT 50% EN 50% T off Ton Vout Ton delay 90% 50% EN 10% 10% 50% Toff Ton 90% 10% 90% Vout Ton delay 90% 90% 10% 10% Toff delay Toff delay VOLTAGE WAVEFORMS Figure 1—Test Circuit and Voltage Waveforms MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN=5V, VEN=0V for MP62260, VCC=5V, CL=2.2μF, TA=25℃ unless otherwise noted. 3 2.5 2 1.5 1 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 1 1.4 0.8 1.3 RISE TIME (ms) TURN OFF DELAY (ms) TURN ON DELAY (ms) 3.5 0.6 0.4 0.2 1.1 1 0.9 0 2.5 6 1.2 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 0.8 2.5 6 110 130 100 110 90 90 80 70 70 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 60 2.5 6 IO=2A 80 70 60 50 40 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 6 6 80 60 50 40 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 OUTPUT CURRENT (A) 20 40 60 80 Input to Output Voltage vs. Load Current VIN=5V 70 6 AMBIENT TEMPERATURE (OC) Static Drain-Source On-State Resistance vs. Output Current STATIC DRAIN-SOURCE ON-STATE STATIC DRAIN-SOURCE ON-STATE Static Drain-Source On-State Resistance vs. Input Voltage 3 IO=0.1A 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -40 -20 0 INPUT TO OUTPUT VOLTAGE (mV) 50 2.5 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) Static Drain-Source On-State Resistance Variation vs. Ambient Temperature Supply Current, Output Enabled vs. Input Voltage 150 3 160 VIN=2.7V 140 VIN=3.3V VIN=4V 120 100 VIN=5V 80 VIN=5.5V 60 40 20 0 0 0.4 0.8 1.2 1.6 2 OUTPUT CURRENT (A) MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 5 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED) VIN=5V, VEN=0V for MP62260, VCC=5V, CL=2.2μF, TA=25℃ unless otherwise noted. Current Limit vs. Input Voltage Threshold Trip Current vs. Input Voltage THRESHOLD TRIP CURRENT (A) CURRENT LIMIT (A) 3.5 3.3 3.1 2.9 2.7 2.5 2.5 3 3.5 4 4.5 5 5.5 6 4 3.8 3.6 3.4 3.2 3 2.5 INPUT VOLTAGE (V) 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 6 Current Limit Response time vs. Peak Current 60 55 50 45 40 35 30 25 20 15 10 5 0 VOUT 2V/div VOUT 2V/div VOUT 2V/div EN 2V/div EN 2V/div EN 2V/div Short Circuit Current, Device Enabled into Short VOUT 2V/div EN 2V/div 4 6 8 10 12 14 16 18 20 PEAK CURRENT (A) Threshold Trip Current with Ramped Load on Enabled Device IOUT 1A/div VOUT 2V/div EN 2V/div IOUT 2A/div 4ms/div MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 6 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED) VIN=5V, VEN=0V for MP62260, VCC=5V, CL=2.2μF, TA=25℃ unless otherwise noted. Inrush Current with Different Load Capacitance Ramped Load on Enabled Device IOUT=2A Flag 5V/div IOUT 1A/div IOUT 1A/div EN 5V/div Flag 5V/div IOUT 1A/div 2ms/div MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2ms/div 7 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH FUNCTION BLOCK DIAGRAM + UVLO Vref -IN OUT Current Sense -- -- -Charge Pump -Logic AMP + FLAG EN* Deglitch Thermal Sense GND Figure2—MP62260/MP62261 Functional Block Diagram (*is active high for MP62261) MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 8 MP62260/MP62261 – 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, MP62260/MP62261 switches into to a constant-current mode (current limit value). MP62260/MP62261 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. MP62260/MP62261 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. 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 MP62260/MP62261 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 EN threshold, the MP62260/MP62261 is enabled. 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 MP62260/MP62261 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. MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 9 MP62260/MP62261 – 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. MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 10 MP62260/MP62261 – CURRENT-LIMITED POWER DISTRIBUTION SWITCH PACKAGE INFORMATION 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. MP62260/MP62261 Rev. 0.9 www.MonolithicPower.com 4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 11