MP62055-3 3.3V/5V, Single-Channel 500mA Current-Limited Power Distribution Switch The Future of Analog IC Technology DESCRIPTION FEATURES The MP62055-3 Power Distribution Switch features internal current limiting to prevent damage to host devices due to faulty load conditions. The MP62055-3 analog switch features 90mΩ on-resistance and operates from 2.7V to 5.5V input. It is available with a guaranteed current limit, making it ideal for load switching applications. The MP62055-3 has built-in protection for both over current and increased thermal stress. For over current, the device will limit the current by changing to a constant current mode. • • • • • • • • • • • • As the temperature increases as a result of short circuit, the device will shut off. The device will recover once the device temperature reduces to approx 120°C. The MP62055-3 is available in TSOT23-5 or SOIC8 package without exposed pad. 10μs Response Time of Current Limit 500mA Continuous Current Accurate Current Limit 2.7V to 5.5V Supply Range 90uA Quiescent Current 90mΩ MOSFET (SOIC8) 115mΩ MOSFET (TSOT23-5) Thermal-Shutdown Protection Under-Voltage Lockout 8ms FLAG Deglitch Time Reverse Current Blocking TSOT23-5 & SOIC8 Package APPLICATIONS • • • • Smartphone and PDA Portable GPS Device Set-top-box USB Power Distribution “MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION +5V 2 GND MP62055-3 5 IN 4 OFF ON OUT EN 1 To VBUS USB Ports FLAG 3 SINGLE-CHANNEL (For TSOT23-5) MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 1 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH ORDERING INFORMATION Part Number* MP62055ES-3 MP62055EJ-3 Enable Active High Active High Maximum Continuous Load Current Maximum ShortCircuit Current Single 500mA Single 500mA Switch Package Free Air Temperature (TA) 1100mA SOIC8 –20°C to +85°C 1100mA TSOT23-5 –20°C to +85°C @ TA=25°C * For Tape & Reel, add suffix –Z (eg. MP62055ES-3 –Z). For RoHS Compliant Packaging, add suffix –LF (eg. MP62055ES-3–LF–Z) PACKAGE REFERENCE TOP VIEW TOP VIEW GND 1 8 OUT IN 2 7 OUT IN 3 6 OUT EN 4 5 FLAG SOIC8 ABSOLUTE MAXIMUM RATINGS (1) IN ....................................................-0.3V to +6V EN, FLAG, OUT to GND .................-0.3V to +6V (2) Continuous Power Dissipation (TA = +25°C) SOIC8.......................................................1.39W TSOT23-5.................................................0.57W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature............... –65°C to +150°C Operating Junct. Temp (TJ)..... –20°C to +125°C MP62055-3 Rev. 0.9 4/12/2010 OUT 1 GND 2 FLAG 3 5 IN 4 EN TSOT23-5 Thermal Resistance (3) θJA θJC SOIC8..................................... 90 ...... 42... °C/W TSOT23-5.............................. 220 .... 110.. °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. © 2010 MPS. All Rights Reserved. 2 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH ELECTRICAL CHARACTERISTICS (4) VIN=5V, TA=+25°C, unless otherwise noted. Parameter Condition Min Typ Max Units IN Voltage Range Supply Current Device Enable, VOUT=float 2.7 70 90 5.5 120 V μA Shutdown Current Device Disable, VOUT=float, VIN=5.5V 1 μA Off Switch Leakage Device Disable, VIN=5.5V 1 μA 1100 mA Current Limit 550 Response time to short circuit Trip Current Under-voltage Lockout Under-voltage Hysteresis IOUT=100mA (-20°C≤TA≤+85°C ) 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 VOUT Rising Time, Tr (5) VOUT Falling Time, Tf VIN=5V Current Ramp (slew rate≤100A/s) on Output Rising Edge (6) Turn On Time, Ton (7) Turn Off Time, Toff (8) FLAG Deglitch Time EN Input Leakage Reverse Leakage Current 808 10 0.6 1 1.95 250 90 115 SOIC8 TSOT23-5 μs 1.4 A 2.65 V mV 130 155 2 ISINK=5mA 0.15 VIN=VFLAG=5.5V 140 20 0.9 1.7 VIN=5.5V, CL=1uF, RL=11Ω VIN=2.7V, CL=1uF, RL=11Ω VIN=5.5V, CL=1uF, RL=11Ω VIN=2.7V, CL=1uF, RL=11Ω CL=100μF, RL=11Ω CL=100μF, RL=11Ω 4 VOUT=5.5V, VIN=0 1.8 2.5 8 0.2 mΩ 0.8 V V 0.4 V 1 μA 2 3 0.5 0.4 3 10 15 1 1 °C °C ms ms ms ms ms ms 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. MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 3 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH PIN FUNCTIONS SOIC8 1 2, 3 4 5 6, 7, 8 TSOT23-5 2 5 4 3 1 Name GND IN EN Description Ground. Input Voltage. Accepts 2.7V to 5.5V input. Enable Input. Active high. IN-to-OUT Over-current, active-low output flag. Open-Drain. Power-Distribution Switch Output. FLAG OUT TYPICAL PERFORMANCE CHARACTERISTICS TA = +25ºC, unless otherwise noted. Figure 1—Test Circuit and Voltage Waveforms Short Circuit Current Limit Iout Tresp Figure 2—Response Time to Short Circuit Waveform MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN=5V, VEN = 5V, VCC=5V, CL=2.2µF, TA = +25ºC, unless otherwise noted. 4 2.8 1.6 3.5 2.6 1.5 1.4 2.4 3 1.3 2.2 1.2 2.5 2 2 1.1 1.8 1.5 1 1.6 1 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 6 0.9 1.4 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 0.8 2.5 6 Supply Current vs. Input Voltage 45 100 95 40 90 35 85 30 80 25 75 20 2.5 3 3.5 4 4.5 5 5.5 6 70 2.5 3 3.5 4 4.5 5 5.5 6 Static Drain-Source On-State Resistance vs. Input Voltage Input to Output Voltage vs. Load Current TSOT23-5 Package, IO=0.1A TSOT23-5 Package IO=0.1A 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -30 -15 0 15 30 45 60 75 90 80 160 VIN=2.7V 70 150 60 140 VIN=3.3V 50 VIN=4V 40 VIN=4.5V VIN=5V 30 130 20 120 Current Limit vs. Input Voltagee 0.95 90 170 110 2.5 6 INPUT VOLTAGE (V) VIN=5.5V CURRENT LIMIT (A) STATIC DRAIN-SOURCE ON-STATE INPUT VOLTAGE (V) STATIC DRAIN-SOURCE ON-STATE RESISTANCE VARIATION (%) 105 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) Static Drain-Source On-State Resistance Variation vs. Ambient Temperature EN=high, Output=float 50 3 0.9 0.85 0.8 0.75 10 3 3.5 4 4.5 5 INPUT VOLTAGE (V) MP62055-3 Rev. 0.9 4/12/2010 5.5 6 0 0 0.1 0.2 0.3 0.4 0.5 0.6 OUTPUT CURRENT (A) 0.7 2.5 3 3.5 4 4.5 5 5.5 6 INPUT VOLTAGE (V) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 5 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN=5V, VEN = 5V, VCC=5V, CL=2.2µF, TA = +25ºC, unless otherwise noted. Threshold Trip Current vs. Current Limit Input Voltage Response Time vs. Peak Current 16 THRESHOLD TRIP CURRENT (A) 1.5 1.4 14 1.3 12 1.2 1.1 VOUT 2V/div. 10 1 0.9 8 0.8 VEN 2V/div. 6 0.7 0.6 2.5 3 3.5 4 4.5 5 5.5 6 4 1.5 INPUT VOLTAGE (V) 2 2.5 3 3.5 4 4.5 5 PEAK CURRENT (A) VOUT 2V/div. VOUT 2V/div. VOUT 2V/div. VEN 2V/div. VEN 2V/div. VEN 2V/div. Short the Output then Enable the Device Threshold Trip Current with Ramped Load on Enabled Device Flag Deglitch when Ramped Load to Current Limit IOUT 0.5A/div. VOUT 2V/div. FLAG 2V/div. VEN 2V/div. IOUT 0.5A/div. IOUT 0.5A/div. MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 6 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN=5V, VEN = 5V, VCC=5V, CL=2.2µF, TA = +25ºC, unless otherwise noted. Input Inrush Current with Short Vout to GND Different Load Capacitance IO = 0.5A VOUT 50mV/div. IIN 0.5A/div. VEN 2V/div. MP62055-3 Rev. 0.9 4/12/2010 FLAG 5V/div. IOUT 0.5A/div. VIN 5V/div. FLAG 5V/div. IOUT 0.5A/div. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 7 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH FUNCTION BLOCK DIAGRAM + UVLO Vref -IN Current Sense -- -- -- OUT -- -- -- -- Charge Pump -Logic --- -- -- EN AMP + FLAG Deglitch Thermal Sense -- -- GND Figure 3—Function Block Diagram MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 8 MP62055-3 –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, MP62055-3 switches into to a constant-current mode (current limit value). MP62055-3 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. MP62055-3 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 MP62055-3 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. When over current or over temperature is encountered, FLAG will report a fail mode (low level). It remains low until fault condition is removed. For over temperature, The FLAG is not deglitched. When output is shorted to ground and the device enters to thermal cycle, FLAG will keep low level until the device resumes normal operation. For over current, 8ms deglitch timeout is needed. This is used to ensure that no false fault signals are reported. This internal deglitch circuit eliminates the need for components. The FLAG will not change state when the input UVLO is triggered. 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, and would recover once cooling down to approx 120°C. Under-voltage Lockout (UVLO) This circuit is used to monitor the input voltage to ensure that the MP62055-3 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 chip to reduce the supply current. The device will operate once the enable signal reaches logic enable threshold. The input is compatible with both CMOS and TTL. MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 9 MP62055-3 –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. MP62055-3 Rev. 0.9 4/12/2010 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. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 10 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH PACKAGE INFORMATION SOIC8 0.189(4.80) 0.197(5.00) 0.050(1.27) 0.024(0.61) 8 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 0.016(0.41) 0.050(1.27) 0o-8o DETAIL "A" MP62055-3 Rev. 0.9 4/12/2010 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. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 11 MP62055-3 –CURRENT-LIMITED POWER DISTRIBUTION SWITCH TSOT23-5 0.95 BSC 0.60 TYP 2.80 3.00 5 4 1.20 TYP 1.50 1.70 1 2.60 TYP 2.60 3.00 3 TOP VIEW RECOMMENDED LAND PATTERN 0.84 0.90 1.00 MAX 0.09 0.20 SEATING PLANE 0.30 0.50 0.95 BSC 0.00 0.10 SEE DETAIL "A" FRONT VIEW SIDE VIEW NOTE: GAUGE PLANE 0.25 BSC 0.30 0.50 0o-8o DETAIL A 1) ALL DIMENSIONS ARE 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 0.10 MILLIMETERS MAX. 5) DRAWING CONFORMS TO JEDEC MO-193, 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. MP62055-3 Rev. 0.9 4/12/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 12