MP2681 CC/CV Controller with Full Protection and Indication One Chip Solution for Power Tools Applications The Future of Analog IC Technology DESCRIPTION FEATURES Constant Voltage and Constant Current The MP2681 is a highly integrated Li-Ion or Li- Control polymer switch mode battery charge controller Pre-Charge Mode for Deeply-discharged with full protection and status indication. This Battery part integrates a precision voltage reference Automatic Battery Cell Detection and charge status indications suitable for AC adapter input and cradle charger applications. Two 1MHz Bandwidth Operational Amplifiers Output Connected with OR Logic The MP2681 automatically detects the battery Wide Input Voltage Range: 4.5V to 30V cell through a battery ID resistor and regulates Auto-Recharge the battery voltage according to the Charge On/Off Control corresponding cell configurations: 3S1P, 3S2P, Programmable Internal Timer 4S1P, 4S2P, 5S1P and 5S2P. Then, the AC Battery Temperature Monitoring adapter output is automatically regulated Charge Status Indication according to the battery configuration chosen. Additionally, if the battery pack does not have Power Line Fault Detection an ID resistor, the charge termination voltage Over Temperature Protection can be configured by setting a dedicated 16-pin SOIC Package voltage to the ID pin according to the six pre-set APPLICATIONS VID values representing each battery configuration. The MP2681 charges the battery Battery Charger for Portable Tools in three phases: pre-charge, constant current Standalone Fast Charger and constant voltage. Charge is terminated All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS and The when the current reaches a minimum set level. Future of Analog IC Technology are Registered Trademarks of Monolithic An internal charge timer provides safety backup. Power Systems, Inc. The MP2681 provides a fixed pre-charge mode for deeply-discharged batteries and safety features that include battery temperature monitoring, NTC control, charge time-out and fault control. MP2681 is available in a 16-pin SOIC package. TYPICAL APPLICATION MP2681 Rev.1.01 www.MonolithicPower.com 1 12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. MP2681 CC/CV CONTROLLER WITH FULL PROTECTION ORDERING INFORMATION Part Number* Package Top Marking MP2681GS SOIC16 MP2681 * For Tape & Reel, add suffix Z (e.g. MP2681GSZ) PACKAGE REFERENCE SOIC16 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC VDD COMP BATT to GND ......... -0.3V to +36V SOIC168035 C/W , , CCON to GND............... -0.3V to +36V Notes: 1) Exceeding these ratings may damage the device. All Other Pins......... -0.3V to +6.5V 2) The maximum allowable power dissipation is a function of the (2) Continuous Power Dissipation (T =+25C) A maximum junction temperature T (MAX), the junction-to- J ambient thermal resistance , and the ambient temperature JA 1.6W T . The maximum allowable continuous power dissipation at A Junction Temperature..150 C any ambient temperature is calculated by P (MAX) = (T D J (MAX)-T )/ . Exceeding the maximum allowable power A JA Lead Temperature (Solder)......................260C dissipation will cause excessive die temperature, and the Storage Temperature........-65C to +150C regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent (3) damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its VDD to GND..4.5V to 30V operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Operating Junct. Temp. (T ).....-40C to +125 C J MP2681 Rev.1.01 www.MonolithicPower.com 2 12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved.