MP2670DQ-LF-P

MP2670 Li-ion Battery Charger Protection Circuit The Future of Analog IC Technology DESCRIPTION FEATURES The MP2670 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 MP2670 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 3mm x 3mm QFN Package APPLICATIONS • • • • • • For guaranteed safe operation, the MP2670 monitors its own internal temperature and turns off the MOSFET bridging VIN and OUT when the die temperature exceeds 150oC. The MP2670 is available in a 10-pin 3mm x 3mm QFN package. 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 CIN COUT LINEAR BATTERY CHARGER MP2670 ILIM VB RILIM EN GND FLT RVB BATTERY PACK + RFLT MP2670 Rev. 0.91 5/13/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 1 MP2670 – CHARGE SYSTEM PROTECTION CIRCUIT ORDERING INFORMATION Part Number* MP2670DQ Package QFN10 (3mm x 3mm) Top Marking Temperature X7 –40°C to +85°C * For Tape & Reel, add suffix –Z (g. MP2670DQ–Z).For RoHS compliant packaging, add suffix –LF (e.g. MP2670DQ–LF–Z) PACKAGE REFERENCE TOP VIEW VIN 1 10 OUT GND 2 9 OUT FLT 3 8 ILIM NC 4 7 VB NC 5 6 EN EXPOSED PAD ON BACKSIDE CONNECT TO GND ABSOLUTE MAXIMUM RATINGS (1) Recommended Operating Conditions VIN to GND......................................–0.3V to 30V OUT and VB to GND........................–0.3V to 7V Other Pins (ILIM, FLT , EN ) ..........–0.3V to 5.5V Junction Temperature ...............................150°C Lead Temperature (Solder).......................260°C Storage Temperature.............. –65°C to +150°C Supply Voltage VIN ..........................4.3V to 5.5V Operating Temperature............. –40°C to +85°C MP2670 Rev. 0.91 5/13/2010 Thermal Resistance (3) θJA (2) θJC QFN10 (3mm x 3mm) .............50 ...... 12 ... °C/W 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-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MP2670 – CHARGE SYSTEM PROTECTION CIRCUIT ELECTRICAL CHARACTERISTICS VIN = 5V, TA = +25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units 3.0 V Power-On Reset VPOR Rising VIN Threshold 2.45 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 VB Pin Leakage Current Over Temperature Protection Rising Threshold Over Temperature Protection Falling Threshold Logic 5.55 VOVP 6.0 V 1 1.10 mV V µs A 5.45 IOCP VVB = 3V, RILIM = 25kΩ 0.90 1.0 170 BTOCP 4.29 VBOVP µs 4.475 BTBOVP VVB = 4.4V mV 180 20 V µs nA 150 °C 110 °C 1.5 100 Sink 5mA current RDS(ON) Measured at 500mA, 4.3