MP26123DR-LF-Z Monolithic Power Systems

MP26123 2A,24V Input, 600kHz 2/3-Cell Switching Li-ion Battery Charger The Future of Analog IC Technology DESCRIPTION FEATURES The MP26123 is a monolithic DC-DC step- Charges 2- or 3-Cell Li-Ion Battery Packs down switching charger for 2- or 3-cell Li-ion Wide Operating Input Range battery packs. It has an integrated high-side Programmable Charging Current of up to 2A power MOSFET can output up to a 2A charge 0.75% V Accuracy BATT current. It also has peak-currentmode control 0.2 Integrated Power MOSFET for fast loop response and easy compensation. Up to 90% Efficiency The MP26123 uses a sense resistor to control a Fixed 600kHz Frequency programmable charge current, and accurately Preconditioning for Fully Depleted Batteries regulates the charge current and charge Charging Status Indicator voltage using two control loops. Input Supply Fault Indicator Thermal Shutdown The MP26123 has multiple fault condition protections that include cycle-by-cycle current Cycle-by-Cycle Over-Current Protection limiting and thermal shutdown. Other safety Battery Temperature Monitor and Protection features include battery temperature monitoring APPLICATIONS and protection, charge status indication and programmable timer to cease the charging Mobile Internet Device cycle when timer out. Portable Media Player Netbook The MP26123 requires a minimal number of Charger for 2- or 3-Cell Li-Ion Batteries readily-available external components. Distributed Power Systems The MP26123 is available in a 4mm x 4mm 16- For MPS green status, please visit MPS website under Quality Assurance. pin QFN package. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP26123 Rev. 1.01 www.MonolithicPower.com 1 10/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. MP26123 2A, 24V INPUT, 600kHz 2-3 CELL SWITCHING LI-ION BATTERY CHARGER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP26123DR QFN16 (4x4mm) M26123 -40C to +85C *For Tape & Reel, add suffix Z (e.g. MP26123DRZ) For RoHS compliant packaging, add suffix LF (e.g. MP MP26123DRLFZ) PACKAGE REFERENCE TOP VIEW PIN 1 ID VIN SW BST TMR 16 15 14 13 VCC 1 12 GND NTC 2 11 CSP ACOK 3 10 BATT CHGOK 4 9 COMPI 5 6 7 8 VREF33 EN CELLS COMPV EXPOSED PAD ON BACKSIDE (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage VCC, VIN ............................ 26V QFN16 (4x4mm)..................... 46...... 10... C/W V ..................................... -0.3V to (V + 0.3V) SW IN Notes: V ...................................................... V + 6V BST SW 1) Exceeding these ratings may damage the device. V , V ...................................-0.3V to +18V 2) The maximum allowable power dissipation is a function of the CSP BATT, maximum junction temperature T (MAX), the junction-to- J V , V ..............................-0.3V to +26V ACOK CHGOK, ambient thermal resistance , and the ambient temperature JA All Other Pins..................................-0.3V to +6V T . The maximum allowable continuous power dissipation at A (2) any ambient temperature is calculated by Continuous Power Dissipation (T = 25C) A P (MAX)=(T (MAX)-T )/ . Exceeding the maximum D J A JA .............................................................2.7W allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Junction Temperature...............................150C Internal thermal shutdown circuitry protects the device from Lead Temperature ....................................260C permanent damage. Storage Temperature............... -65C to +150C 3) The device is not guaranteed to function outside of its operating conditions. (3) 4) Measured on JESD51-7 4-layer board. Recommended Operating Conditions Supply Voltage V ..............................9V to 24V IN Maximum Junction Temp. (T )..................125C J MP26123 Rev. 1.01 www.MonolithicPower.com 2 10/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved.