MP2625BGL-Z

MP2625 2A Switching Charger with NVDC Power Path Management For Single Cell Li+ Battery DESCRIPTION FEATURES The MP2625 is a monolithic switch mode battery charger with power path management for single-cell Li-ion batteries in a wide range of tablet and other portable devices. It integrates a synchronous BUCK regulator to provide regulated voltage for powering the system output and at the same time charging the battery. This device supports both USB and high power DC adapter input. In USB mode, the input current limit can be programmed to 450mA or 825mA via the logic pins to cover the USB2.0 and USB3.0 specifications. When the adapter input is present, the input current can also be limited in order to avoid overloading of the DC adapter. Input current limit can be programmed up to 2A.    The smart power path management allows MP2625 to regulate the system voltage for powering an external load and charging the battery independently and simultaneously. This allows immediate system operation even under missing or deeply discharged battery. When the input current limit is reached, the system load is satisfied in priority, then the charger will take the remaining current to charge the battery. Additionally, the smart power path control allows an internal connection from battery to the system in order to supplement additional power to the load in the event the system power demand increases over the input limited power or the input is removed. The MP2625 features high integration with all the power switches included inside. No external MOSFET, blocking diodes, or current sense resistor is required.             4V to 14V Operating Input Voltage Smart Power Path Management Five Control Loops: Input Current Limit, Input Voltage Limit, Constant Charge Current, Terminal Battery Control and Thermal Fold-Back. 1.6MHz Switching Frequency Programmable Input Current Limit Programmable Charge Current Single Input for USB and AC adapter Cover USB2.0 and USB3.0 Input Specification Fully Integrated Power Switches No External Blocking Diode and Sense Resistor Required Charging Operation Indicator Built-in Programmable Charging Timer Thermal Limiting Regulation on Chip Battery Temperature Monitor Tiny Package Features Small Size APPLICATIONS       Smart Phone E-Book GPS Portable Media Player Portable Hand-held Solution Tablet PC 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. Two status monitor output pins are provided to indicate the battery charge status and power source status. Other features include trickle charge, battery temperature monitoring, timer and thermal limiting regulation on chip. MP2625 is package. MP2625 Rev. 1.12 10/29/2013 available in QFN 3mmx4mm www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 1 MP2625 – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL TYPICAL APPLICATION MP2625 Rev. 1.12 10/29/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 2 MP2625 – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL ORDERING INFORMATION Part Number* MP2625GL Package QFN 3mmx4mm Top Marking MP2625 * For Tape & Reel, add suffix –Z (e.g. MP2625GL–Z); PACKAGE REFERENCE TOP VIEW VCC VLIM 20 19 TMR 18 ILIM 17 BST 1 16 NTC SW 2 15 ISET IN 3 14 BATT SW 4 13 P GND 5 12 SYSFB EN 6 11 AGND 7 8 M0 M1 9 SYS 10 CHGOK ACOK ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance IN, SW ........................................ -0.3V to +20V BATT, SYS .................................... -0.3V to +6V BST ............................................. -0.3V to +26V All Other Pins ................................. -0.3V to +6V (2) Continuous Power Dissipation (TA = +25°C) QFN20 3mmx4mm ....................................2.6W Junction Temperature .............................. 150C Lead Temperature ................................... 260C Storage Temperature.................–65°C to 150°C QFN20 3mmx4mm ................. 48 ...... 11 ... C/W Recommended Operating Conditions (3) Supply Voltage VIN .......................... 4.5V to 12V Operating Junction Temp. (TJ) .... -40°C to +125°C MP2625 Rev. 1.12 10/29/2013 (4) θJA θJC 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. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 3 MP2625 – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL ELECTRICAL CHARACTERISTICS VIN = 5.0V, TA = 25C, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units (5) Rising 4.0 3.65 3.8 14 3.95 V V Falling 3.35 3.5 3.65 V Rising 270 310 350 mV Falling 70 110 150 mV Rising 2.75 2.9 3.05 V Falling 2.6 2.75 2.9 V 1.4 1.6 1.8 MHz 400 750 1840 450 825 2000 500 900 2160 mA mA mA 1840 2000 2160 mA 1.1 1.14 1.18 V 120 130 mΩ 80 4 1.52 2.4 100 5 1.55 5 mΩ A V mA 2.8 5 mA 3.8 5 mA Charger Enabled, Default Mode 3.8 5 mA Disabled, EN=0V SYS=SW=4.5V,VIN=0V, monitor VIN leakage 3 5 uA 0.01 0.2 uA 3.45 3.6 3.75 V 3.5 VBATT+ 0.2V 4.5 V 4.4 V Input Power (IN) IN Operating Range VIN IN Under Voltage Lockout Threshold IN vs. BATT Threshold BST Voltage Threshold VBST-VSW Switching Frequency Input Current Limit IIN USB2.0 Mode USB3.0 Mode Default Mode Programmable Mode, RILIM=23k Input Current Limit Reference Voltage High-side NMOS On Resistance VILIM RH_DS(ON) Include the BLOCK FET Low-side NMOS On Resistance RL_DS(ON) High-side NMOS Peak Current limit 3 Input Voltage Clamp Threshold VVLIM Voltage on VLIM 1.49 Charger Enabled, USB2.0 Mode Charger Enabled, USB3.0 Mode Charger Enable, Programmable Input Quiescent Current IIN Mode SYS to IN reverse current blocking SYS Output Minimum SYS Regulation Voltage VSYS SYS Regulation Voltage VSYS SYS voltage @ VBATT≤3.4V, SYSFB float 3.4VVBATT–800mV SYS short BATT to SYS Resistance BATT to SYS Current Limit Typ Max Units 0.04 0.05 Ω 3 200 A mA Battery Charger Terminal Battery Voltage Recharge Threshold at VBATT Recharge Hysteresis Trickle Charge Threshold Trickle Charger Hysteresis Trickle Charge Current Termination Charger Current VBATT VRECH VBATT>VRECH, ICHG≤IBF, SYSFB float VSYSVIN_UVLO (VTH)? No, UVLO="1" Yes, UVLO="0" VIN>VBATT+310mV? No Yes Enable DC-DC DC-DC soft starts VSYS_REF=max(VBATT+ 200mV,3.6V) VSYS>VBATT ? ISET OK? No Yes BATT-to-SYS switch turns off DC-DC starts ready? Yes No Enable Battery Charger MP2625 Rev. 1.12 10/29/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 21 MP2625 – SINGLE CELL SWITCHING CHARGER WITH POWER PATH CONTROL Yes Any Limit condition triggered? Clamp DC-DC EAO to regulate the part at the limit state No VBATT3.0V? Yes No No Trickle Charge ICHG=10%ICC CC/CV Charge Yes VSYS drops down, Charge switch is fully on Decrease ICHG, Keep VSYS=3.6V Yes No Limit condition Removed? ICHG=IBF? Charge Full, EOC=1 TMR off, clear the counter DC-DC keeps work Satisfy System current Charge the battery with remaining current No Yes No No Yes Charge in CV mode and ICHG