MP5075 5.5V, 2.4A, Low RDS(ON) Load Switch DESCRIPTION FEATURES The MP5075 provides up to 2.4A of load protection over a 3V to 5.5V voltage range with a small RDS(ON) in a space-saving package. The MP5075 is a very high-efficiency and spacesaving solution for notebooks, tablets, and other portable and battery-operated applications. With a fixed soft-start function, the MP5075 can prevent inrush current during circuit start-up. The MP5075 also provides output discharge functions, over-current protection (OCP), and thermal shutdown features. The max load at the output (source) is currentlimited. This is accomplished by utilizing sense FET topology. An internal charge pump drives the gate of the power device, allowing for a very low onresistance DMOS power FET of just 38m. The MP5075 is available in a space-saving SOT563 (1.6mmx1.6mm) package. Integrated 38m Low RDS(ON) MOSFETs Wide VIN Range from 3V to 5.5V <5A Shutdown Current Typical 3A Current Limit Output Discharge Function Internal Fixed 450s Soft-Start Time <200ns Short-Circuit Protection Response Time Thermal Protection Available in a SOT563 (1.6mmx1.6mm) Package APPLICATIONS Notebook and Tablet Computers Portable Devices Solid-State Drives Handheld Devices USB Power Distribution USB Dongles All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. "MPS" and "The Future of Analog IC Technology" are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION VIN 2 VIN C1 10F EN VOUT 3 C2 10F MP5075 5 EN VOUT GND 4 1,6 NC MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 1 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH ORDERING INFORMATION Part Number* MP5075GTF Package SOT563 Top Marking See Below * For Tape & Reel, add suffix -Z (e.g. MP5075GTF-Z) TOP MARKING AVA: Product code of MP5075GTF Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW NC 1 6 NC VIN 2 5 EN VOUT 3 4 GND SOT563 MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 2 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance (4) VIN ...............................................-0.3V to +6.5V VOUT ...........................................-0.3V to +6.5V EN ................................................-0.3V to +6.5V Junction temperature ................................150C Lead temperature .....................................260C Continuous power dissipation (TA = +25C) (2) ...................................................................... 1W SOT563 ................................ 130 ...... 60 ... C/W Recommended Operating Conditions (3) Supply voltage (VIN) .......................... 3V to 5.5V Output voltage (VOUT) ...................... 3V to 5.5V Output current (IOUT) .................................... 2.4A Operating junction temp. (TJ). .. -40C to +125C MP5075 Rev 1.0 2/3/2017 JA JC 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 JA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/JA. Exceeding the maximum allowable power dissipation produces an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 3 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH ELECTRICAL CHARACTERISTICS VIN = 5V, TJ = -40C to 125C (5), typical value is tested at TJ = 25C, unless otherwise noted. Parameters Input and Supply Voltage Range Input voltage Supply Current Off-state leakage current VIN standby current Symbol Condition VIN IOFF ISTBY Min Typ 3 Max Units 5.5 V 5 5 300 A VIN = 5V, EN = 0 VIN = 5V, EN = 0 VIN = 5V, enable, no load 230 VIN = 5V VIN = 3.3V 38 48 m 150 30 C C A Power FET On resistance RDSON Thermal Shutdown and Recovery Shutdown temperature (6) Hysteresis (6) Under-Voltage Protection (UVLO) VIN under-voltage lockout threshold UVLO hysteresis Soft Start (SS) SS time Enable (EN) EN rising threshold EN hysteresis EN pull-down resistor ILIM Current limit Discharge Resistance Discharge resistance TSTD THYS VIN_UVLO VUVLO-HYS TSS UVLO rising threshold 2.3 0% to 100% 2.6 200 2.9 450 V mV s VENH VEN-HYS RPUD 1.3 1.5 200 1 1.7 V mV M IOUT 2.6 3 3.4 A RDIS 150 NOTES: 5) Guaranteed by over-temperature correlation, not tested in production. 6) Guaranteed by characterization, not tested in production. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 4 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH TYPICAL PERFORMANCE CHARACTERISTICS VIN = EN = 5V, TA = 25C, unless otherwise noted. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 5 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = EN = 5V, TA = 25C, unless otherwise noted. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 6 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = EN = 5V, TA = 25C, unless otherwise noted. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 7 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH PIN FUNCTIONS SOT563 Pin # Name Description 1, 6 2 3 4 NC VIN VOUT GND 5 EN No connection. Input power supply. Output to the load. Ground. Enable input. EN has an internal 1M pull-down resistor. Float EN to shut down the IC. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 8 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH BLOCK DIAGRAM VIN Change Pump Current Sense VCC 4A VOUT Fast Off Comp Soft Start 3A 1V Current Limit Amp 450s UVLO VCC Control Logic EN 4A 8A Thermal Sense 80k GND Figure 1: Functional Block Diagram MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 9 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH OPERATION The MP5075 is designed to limit the inrush current to the load when a circuit card is inserted into a live backplane power source, thereby limiting the backplane's voltage drop and the slew rate of the voltage to the load. The MP5075 provides an integrated solution to monitor the input voltage, output voltage, and output current to eliminate the need for an external current power MOSFET and current switch device. Enable (EN) When the input voltage is greater than the undervoltage lockout (UVLO) threshold (typically 2.6V), the MP5075 can be enabled by pulling EN above 1.5V. Pull EN down to ground to disable the MP5075. Current Limit The MP5075 provides an internal, fixed, 3A, constant current limit. Once the device reaches its current limit threshold, the internal circuit regulates the gate voltage to hold the current in the power MOSFET constant. The typical response time is about 20s. The output current may have a small overshoot during this time period. current limit until the part is hot enough to trigger thermal shutdown. After the short-circuit condition is removed, the MP5075 auto-retries after the silicon temperature drops. Output Discharge The MP5075 has an output discharge function. This function can discharge VOUT by the internal pull-down resistance when the IC is disabled and the load is very light. Soft Start (SS) Soft start prevents large inrush current. The softstart time is set to 450s internally. PCB Layout Guidelines Efficient PCB layout is critical for stable operation. For best results, refer to Figure 2 and follow the guidelines below. 1. Place an input capacitor close to VIN. 2. Connect NC to GND for an easier layout. 3. Place enough vias around the IC and enough copper area near VIN and VOUT to achieve better thermal performance. If the current limit block starts to regulate the output current, the power loss on the power MOSFET causes the IC temperature to rise. If the junction temperature rises high enough, thermal shutdown is triggered. After thermal shutdown occurs, the output is disabled until the over temperature fault is removed. The overtemperature threshold is 150C, and hysteresis is 30C. Short-Circuit Protection (SCP) If the load current increases rapidly due to a short circuit, the current may exceed the current limit threshold greatly before the control loop can respond. If the current reaches an internal secondary current limit level (typically 7A), a fast turn-off circuit activates to turn off the power MOSFET. This limits the peak current through the switch to limit the input voltage drop. The total short-circuit response time is about 200ns. If fast turn-off is effective, the power MOSFET remains off for 80s. Afterward, the power MOSFET is turned on again. If the part is still in the short-circuit condition, the MP5075 enters MP5075 Rev 1.0 2/3/2017 Figure 2: Recommended Layout www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 10 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH TYPICAL APPLICATION CIRCUIT 2 VIN C1 10F EN VIN R1 10k VOUT 3 C2 10F MP5075 5 EN VOUT GND 4 1,6 NC MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 11 MP5075 - 5.5V, 2.4A, LOW RDS(ON) LOAD SWITCH PACKAGE INFORMATION SOT563 PIN 1 ID BOTTOM VIEW TOP VIEW SIDE VIEW FRONT VIEW NOTE: 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-293, VARIATION UAAD. 6) DRAWING IS NOT TO SCALE. RECOMMENDED LAND PATTERN NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. 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. MP5075 Rev 1.0 2/3/2017 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. (c) 2017 MPS. All Rights Reserved. 12