MP2690 All-in-One, 2.5A Battery Charger with 2.1A Boost Current DESCRIPTION FEATURES Up to 14V Sustainable Input Voltage The MP2690 is a highly integrated, flexible, 4.65V to 6V Operating Input Voltage Range switch-mode battery charger with system power- Power Management Function, Integrated path management and is designed for single-cell Li-ion or Li-polymer battery use in a wide range Input Current Limit, Input Voltage Regulation of applications. Up to 2.5A Programmable Charge Current Trickle-Charge Function The IC can operate in both charge mode and Selectable 4.2V/4.35V/4.45V Charge Voltage boost mode to allow for full system and battery with 0.5% Accuracy power management. 4-LED Driver for Battery Fuel Gauge The IC has an integrated IN-to-SYS pass-through Indication path to pass the input voltage to the system. The Automatic Turn-Off at Light Load pass-through path has built-in over-voltage and Input Source Detection over-current protection and has a higher priority Output Source Signaling over the charging path. Torch-Light Control When the input power is present, the device Negative Temperature Coefficient Pin for operates in charge mode. The MP2690 detects Battery Temperature Monitoring the battery voltage automatically and charges the Programmable Timer Back-Up Protection battery in three phases: trickle current, constant Thermal Regulation and Thermal Shutdown current, and constant voltage. Other features Internal Battery Reverse Leakage Blocking include charge termination and auto-recharge. Integrated Over-Voltage Protection (OVP) The MP2690 also integrates both input current and Over-Current Protection (OCP) for Pass- limit and input voltage regulation to manage input Through Path power and meet the priority of the system power Reverse Boost Operation Mode for System demand. Power Up to 2.1A Programmable Output Current In the absence of an input source, the IC Limit for Boost Mode switches to boost mode through PB to power Integrated Short-Circuit Protection (SCP) and SYS from the battery. In boost mode, OLIM programs the output current limit, and the IC Output Over-Voltage Protection for Boost turns off at light load automatically. The IC also Mode uses output short-circuit protection to disconnect APPLICATIONS the battery from the load completely in the event of a short-circuit fault. The MP2690 resumes Sub-Battery Applications normal operation once the short-circuit fault is Power-Bank Applications for Smart Phones removed. Tablets and Other Portable Devices The 4-LED driver is integrated for voltage-based All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under fuel gauge indication. Together with torch-light Quality Assurance. MPS and The Future of Analog IC Technology are control, the MP2690 provides an all-in-one registered trademarks of Monolithic Power Systems, Inc. solution for power banks and similar applications Analog digital adaptive modulation (ADAM) is a trademark of Monolithic Power Systems, Inc. without an external micro-controller. The MP2690 is available in a 26-pin QFN (4mmx4mm) package MP2690 Rev.1.0 www.MonolithicPower.com 1 6/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. MP2690 ALL-IN-ONE, 2.5A SW CHARGER, 2.1A BOOST TYPICAL APPLICATION USB OUTPUT C C2 SYS USB INPUT PB SYS DM2 DP2 L1 RS1 5V Input I CHG SW V BATT I BATT VIN C IN Q1 Q2 Q3 C BATT CSP Battery Q4 DM1 BATT VNTC DP1 NTC VNTC MP2690 TC VBATT VCC C4 LED1 VB LED2 ILIM LED3 VCC OLIM LED4 ISET TMR AGND PGND R R R C ILIM OLIM ISET TMR Table 1: Operation Mode Control Operation V (V) PB Q1, Q2 Q3 Q4 IN Mode V + 300mV < V < 6V X Charging On SW SW BATT IN From H to L Discharging V < V + 300mV Off SW SW IN BATT for >1.5ms (boost) V > 6V X OVP Off Off Off IN V < 2V H or L Sleep Off Off Off IN MP2690 Rev.1.0 www.MonolithicPower.com 2 6/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.