MP2671DL-LF-Z

MP2671 Li-ion Battery Charger Protection Circuit The Future of Analog IC Technology FEATURES DESCRIPTION The MP2671 is a high-performance single cell Li-Ion/Li-Polymer battery charger protection circuit. By integrating high voltage input protection into the charger IC, the MP2671 can tolerate an input surge up to +30V. • • • • The device features input over voltage protection (OVP), battery over voltage protection (BOVP) and over charge current protection (OCP). The device also provides fault indications to the system when any of the protection events happens. • • • • Input Surge up to 30V Input Over voltage protection in 1us. Proprietary Battery Over-Voltage Protection Programmable Charge Current Protection Limit Value. Temperature Monitoring and Protection Fault Indication Enable Input 3x4mm QFN package APPLICATIONS • • • • • • For guaranteed safe operation, the MP2671 monitors its own internal temperature and turns off the MOSFET bridging VIN and OUT when the die temperature exceeds 140oC. The MP2671 is available in 12-pin 3mm x 4mm QFN packages. Cell Phones MP3 Players Smart Phones PDA Digital Cameras Desktop Chargers “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION INPUT VIN OUT BATTERY CHARGER CIN MP2671 ILIM RILIM EN GND MP2671 Rev. 0.9 2/23/2009 VB WRN RVB BATTERY PACK www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. + 1 MP2671 – CHARGE SYSTEM PROTECTION CIRCUIT ABSOLUTE MAXIMUM RATINGS (1) PACKAGE REFERENCE TOP VIEW VIN 1 12 N/C VIN 2 11 OUT GND 3 10 OUT WRN 4 9 ILIM N/C 5 8 VB N/C 6 7 EN Recommended Operating Conditions Thermal Resistance Part Number* Temperature Top Marking –40°C to +85°C 2671 (3) θJA θJC QFN12 (3mm x 4mm) ............. 48 ...... 10... °C/W Package QFN12 (3mm x 4mm) MP2671DL (2) Supply Voltage VIN .......................... 4.3V to 5.5V Operating Current Range………….. 0A to 1.5A Operating Temperature .............–40°C to +85°C EXPOSED PAD (CONNECT TO GND) * VIN to GND ..................................... –0.3V to 30V OUT and VB to GND ....................... –0.3V to 7V Other Pins (ILIM, WRN , EN ).......... –0.3V to 5.5V Junction Temperature...............................150°C Lead Temperature (Solder) ........................ 260° Storage Temperature ..............–65°C to +150°C Notes: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its operating conditions. 3) Measured on JESD51-7 4 layers board. For Tape & Reel, add suffix –Z (g. MP2671DL–Z) For RoHS compliant packaging, add suffix –LF (e.g. MP2671DL–LF–Z) ELECTRICAL CHARACTERISTICS VIN = 5V, TA = +25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units 2.4 2.58 2.7 V Power-On Reset VPOR Rising VIN Threshold POR Hysteresis VIN Bias Current IVIN Protection Input Over-voltage Protection (OVP) Input OVP Hysteresis Input OVP Falling Threshold Input OVP Propagation Delay Over-current Protection Overcurrent Protection Blanking Time Battery Over-voltage Protection Threshold Battery OVP Threshold Hysteresis Battery OVP Falling Threshold Battery OVP Blanking Time MP2671 Rev. 0.9 2/23/2009 110 0.6 25 When enabled When disabled 5.65 VOVP 5.85 mV mA µA 6.0 V 1 1.07 mV V µs A 50 5.55 IOCP VVB = 3V, RILIM = 25kΩ 0.93 BTOCP VBOVP 1.0 170 4.28 4.34 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 4.4 V 30 mV 180 V µs 4.225 BTBOVP µs 2 MP2671 – CHARGE SYSTEM PROTECTION CIRCUIT ELECTRICAL CHARACTERISTICS (continued) VIN = 5V, TA = +25°C, unless otherwise noted. Parameter VB Pin Leakage Current Over Temperature Protection Rising Threshold Over Temperature Protection Falling Threshold Logic Symbol Condition VVB = 4.4V Min Typ 20 Max Units nA 140 °C 90 °C 1.5 EN Input Logic HIGH EN Input Logic LOW EN Internal Series Resistor WRN Output Logic Low WRN Output Logic High Leakage Current Power MOSFET On Resistance 100 Sink 5mA current RDS(ON) Measured at 500mA, 4.3