MP28119EG-LF-P

MP5000A 12V, 5A Programmable Current Limit Switch The Future of Analog IC Technology DESCRIPTION The MP5000A is a protection device designed to protect circuitry on the output (source) from transients on input (VCC). It also protects VCC from undesired shorts and transients coming from the source. At start up, inrush current is limited by limiting the slew rate at the source. The slew rate is controlled by a small capacitor at the dv/dt pin. The dv/dt pin has an internal circuit that allows the customer to float this pin (no connect) and still receive 0.9ms ramp time at the source. The maximum load at the output (source) is current limited. This is accomplished by utilizing a sense FET topology. The magnitude of the current limit is controlled by an external resistor from the I-Limit pin to the Source pin. FEATURES • • • • • • • Integrated 40mΩ Power FET Enable/Fault Pin Adjustable Slew Rate for Output Voltage Adjustable Current Limit: 1-5A Thermal Protection Over Voltage Limit Low Inrush Current APPLICATIONS • • • Hot Swap PC Cards Laptops All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. An internal charge pump drives the gate of the power device, allowing a very low on-resistance DMOS power FET of just 40mΩ. The source is protected from the VCC input being too low or too high. Under Voltage Lockout (UVLO) assures that VCC is above the minimum operating threshold, before the power device is turned on. If VCC goes above the high output threshold, the source voltage will be limited. TYPICAL APPLICATION MP5000A Rev. 1.01 www.MonolithicPower.com 10/16/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 1 MP5000A – 12V, 1A-5A PROGRAMMABLE CURRENT LIMIT SWITCH ORDERING INFORMATION Part Number* Package Top Marking MP5000ADQ QFN-10 (3mmX3mm) See Blow * For Tape & Reel, add suffix –Z (e.g. MP5000ADQ–Z); For RoHS Compliant Packaging, add suffix –LF (e.g. MP5000ADQ–LF–Z) TOP MARKING AHQY LLL AHQ: product code of MP5000ADQ; Y: year code; LLL: lot number; PACKAGE REFERENCE TOP VIEW GND 1 DV/DT 2 ENABLE/FAULT 3 I-LIMIT 4 N/C 5 EXPOSED PAD VCC 10 SOURCE 9 SOURCE 8 SOURCE 7 SOURCE 6 SOURCE QFN-10 (3mmX3mm) MP5000A Rev. 1.01 www.MonolithicPower.com 10/16/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 2 MP5000A – 12V, 1A-5A PROGRAMMABLE CURRENT LIMIT SWITCH • ABSOLUTE MAXIMUM RATINGS (1) VCC, SOURCE, I-LIMIT ...................-0.3V to 22V dv/dt, ENABLE/FAULT .....................-0.3V to 6V Storage Temperature............... -65°C to +155°C (2) Continuous Power Dissipation (TA = +25°C) ............................................................. 2.5W Operating Junction Temperature. -40°C to 150°C Input Voltage Transient (100mS) ......... VIN=25V Recommended Operating Conditions (3) Input Voltage Operating Range…….10V to 18V Continuous Current 0.5 in2 pad .................................................. 4.2A For Minimum Copper, TA=80°C .................. 2.3A Operating Junction Temp. (TJ). -40°C to +125°C Thermal Resistance (4) θJA θJC QFN-10 (3mmX3mm) .............50 ...... 12 ... °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) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MP5000A Rev. 1.01 www.MonolithicPower.com 10/16/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2014 MPS. All Rights Reserved. 3 MP5000A – 12V, 1A-5A PROGRAMMABLE CURRENT LIMIT SWITCH ELECTRICAL CHARACTERISTICS VCC = 12V, RLIMIT=22Ω, Capacitive Load = 100μF, TA=25°C, unless otherwise noted. Parameters Power FET Symbol Delay Time (5) tDLY ON Resistance RDSon Off State Output Voltage VOFF Thermal Latch Shutdown Temperature(6) Under/Over Voltage Protection TSD Output Clamping Voltage VCLAMP Under Voltage Lockout VUVLO Under Voltage Lockout (UVLO) Hysteresis Current Limit Hold Current (7) Trip Current (7) dv/dt Circuit Min Enabling of chip to ID=100mA with a 1A resistive load TJ=25°C TJ=85°C (6) VCC=18Vdc, VENABLE=0Vdc, RL= 500Ω ILIM-SS ILIM-OL Tr Enable/Fault Low Level Input Voltage VIL Intermediate Level Input Voltage VI (INT) High Level Input Voltage High State Maximum Voltage Low Level Input Current (Sink) VIH VI (MAX) IIL Maximum Fanout for Fault Signal Typ Max Units 0.4 40 52 ms 55 mΩ 120 mV 175 Overvoltage Protection VCC=17V Turn on, Voltage going high °C 13.8 15 16.2 V 7.7 8.5 9.3 V VHYST Rise Time Maximum Voltage on Enable/Fault Pin (8) Total Device Condition 0.80 RLIM=22Ω RLIM=22Ω Float dv/dt pin, Output rises from 10% to 90% Output Disabled Thermal Fault, Disabled Output Enabled Output VENABLE=0V Total number of chips that can be connected for simultaneous shutdown 2.3 3.6 4.7 4.9 A A 0.4 0.9 2.1 ms 0.5 V 1.95 V -50 V V μA 3 Units VCC V 0.82 1.4 2.5 5 -28 VMAX Bias Current IBIAS Device Operational Thermal Shutdown Minimum Operating Voltage for UVLO VMIN Enable