MP26053 28V, 1A Li-Ion/Li-Polymer Battery Charger With 10% Battery-Full Threshold, Trickle Charge and Timer The Future of Analog IC Technology DESCRIPTION FEATURES The MP26053 is a linear, high-performance Proprietary V Surge Protection up to 28V IN single cell Li-Ion/Li-Polymer battery charger. By 10% Battery-Full Threshold integrating high voltage input protection into the Programmable Charge Current : charger IC, the MP26053 can tolerate an input 200mA to 1.0A surge up to +28V. In addition, the MP26053 Trickle Charge features an internally programmed precision 40A Shutdown Current battery full-threshold of 10% of I . CHG 7V Input OVP Auto Recharge The device features constant current (CC) and constant voltage (CV) charging modes with Charge-Timer programmable charge currents (200mA to 1A), Fault and Charge Status Indicators current blocking, and trickle charge. The device APPLICATIONS also provides fault and charge status indications to the system. Cell Phones Digital Cameras For guaranteed safe operation, the MP26053 Smart Phones reduces charge current when the device PDAs reaches high temperature (due to limited PCB MP3 Players space). Other safety features include battery temperature monitoring and programmable MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. timer to complete the charging cycle. The MP26053 is available in 10-pin 3mm x 3mm QFN packages. TYPICAL APPLICATION 3.5V - 6.5V V IN To system I BATT 1 10 IN BATT 2 9 NTC ACOK MP26053 3 8 CHG ISET V BATT 4 7 TMR SS 5 6 GND SHDN CSS ON OFF MP26053 Rev. 0.9 www.MonolithicPower.com 1 8/25/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2008 MPS. All Rights Reserved. MP26053 28V, 1A LINEAR BATTERY CHARGER WITH TRICKLE CHARGE AND TIMER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS IN to GND ....................................0.3V to +28V ACOK andCHG Maximum Sink Current........20mA All Other Pins to GND..................-0.3V to +6.5V 1 10 Junction Temperature...............................140C 2 9 Lead Temperature ....................................260C 3 8 Storage Temperature ..............65C to +150 C 4 7 (2) Recommended Operating Conditions 5 6 Nominal Supply Voltage V ............ 3.5V to 6.5V IN Operating Temperature .............40C to +85 C (3) Thermal Resistance JA JC 3x3 QFN10 ............................. 50...... 12... C/W Part Number* Package Temperature QFN10 Notes: MP26053DQ 40 C to +85C 1) Exceeding these ratings may damage the device. (3mm x 3mm) 2) The device is not guaranteed to function outside of its For Tape & Reel, add suffix Z (e.g. MP26053DQZ) operating conditions. * For RoHS compliant packaging, add suffix LF 3) Measured on approximately 1 square of 1 oz copper. The (e.g. MP26053DQLFZ) exposed pad must be Soldered to a ground plane ELECTRICAL CHARACTERISTICS V = 5V, V = 0V, T = +25 C, unless otherwise noted. IN SHDN A Parameter Symbol Condition Min Typ Max Units SHDN = High 40 A Supply Current I SUPPLY SHDN= Low, ICHG = 0A, 200 A V =4.1V BATT Battery Voltage Regulation V T = 5C to +75C, I = 0 4.16 4.20 4.24 V BATT BATT Constant Current V = 5V, V = 3.8V IN BATT I 448 515 582 mA CHG Regulation R = 3.3k CHG V = 5V, V = 3.8V, IN BATT (4) Constant Current Variation TJ = 0C to +120C, 87 100 113 %I CHG R = 1.6k to 8.0k CHG (4) End of Charge Threshold I 7.5 10 12.5 %I BF CHG (4) Trickle Current V = 5V, V = 2.3V 5 10 15 %I IN BATT CHG Trickle Threshold Voltage 2.45 2.6 2.75 V Trickle Voltage Hysteresis 100 mV ACOK 6.7 7 7.3 V Input Up Range 1.5 2 2.5 V ACOK Input Low Range ACOK and CHG Over- V 8.2 V Z voltage Clamp Input Over Voltage OVP V Rising 6.7 7 7.3 V IN Protection OVP Hysteresis 400 mV MP26053 Rev. 0.9 www.MonolithicPower.com 2 8/25/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2008 MPS. All Rights Reserved.