ACT2861 30V Buck-Boost Charger with Integrated MOSFETs and OTG BENEFITS and FEATURES GENERAL DESCRIPTION Wide VIN Range: 3.9V to 29V (No Dead Zone) The ACT286x is a buck-boost charger with 4 integrated MOSFETs. It offers a high efficiency, low component Supports 2 to 5 Cell Lithium-ion Batteries counts, compact solution for 2 to 5 cell battery charging Supports OTG Function (5V ~ 22.5V Input) with application. It can operate from an input voltage range wide range of output voltages from 3.9 V to 29 V. OTG output supports QC3.0 / USB PD + PPS output levels and transition times The 4 internal low resistance NMOS switches minimize Programmable Frequency: 125KHz, 250KHz, the size of the application circuit and reduce power 500kHz, and 1MHz losses to maximize efficiency. Internal high side gate 2V ~ 5.1V/100mA Programmable Output LDO drivers, which require only the addition of two small Precision 0.5% Voltage Reference external capacitors, further simplify the design process. +/-4% Output Constant Current Regulation An advanced switch control algorithm allows the buck- < 5 A Leakage Current from Battery in Shipping boost converter to maintain output voltage regulation Mode with input voltages that are above, below or equal to the Programmable Charge Voltage via I2C output voltage. Transitions between these operating modes are seamless and free of transients and Programmable Charge Current via Pin and I2C subharmonic switching. Programmable Soft-Start Programmable Safety Timer The ACT286x has been optimized to reduce input Battery Path Impedance Compensation current in shipping, shutdown, and standby for JEITA Compliant applications which are sensitive to quiescent current Cycle-by-Cycle Current Limit draw, such as battery-powered devices. Built in ADC for Temperature, Input and Output Volt- Both the input side and output side voltages and age and Current monitoring 2 currents can be configured by resistors or the I C serial Thermal Regulation and Protection interface. The system can be monitored and configured 25m FET from VIN to SW1 2 by I C as well. The build-in ADC can be read for the 25m FET from SW2 to VOUT information of input/output voltages and currents, and 35m FET from SW1 to PGND the die temperature. With a MCU, it can easy to charge 35m FET from SW2 to PGND a multi cell battery pack from a variety of input power Low Output Ripple sources. Thermally Enhanced 32-Lead 4mx4mm QFN The IC provides various safety features for system operation. The thermal regulation reduces output APPLICATIONS current when the junction temperature exceeds 120C (programmable). Multi Cell Battery Charger Portable Battery-Powered Devices The ACT286x is available in 32-pin, 4x4 mm QFN Car Charger package. Power Bank 24V Industrial Applications Automotive Power Systems Multiple Power Source Supplies DC UPS Solar Powered Devices Solid-State Lighting Data Sheet Rev. E, September 2019 Subject to change without notice 1 of 94 www.qorvo.com 2020 Qorvo US, Inc. All rights reserved. ACT2861 30V Buck-Boost Charger with Integrated MOSFETs and OTG FUNCTIONAL BLOCK DIAGRAM SW1 SW2 VIN VBAT VREG LDO OSRP Q1 Q4 INTBP OSRN Q2 Q3 HSB1 ISRP Gate Driver ISRN HSB2 CC Loop Current I ORef Sense nIRQ OLIM CC Loop EN CHG I inRef OTP Control ILIM OCOMP A2D IN nCHG SDA Ref SCL IFB nOTG ICOMP SHIPM TH AGND PGND Data Sheet Rev. E, September 2019 Subject to change without notice 2 of 94 www.qorvo.com 2020 Qorvo US, Inc. All rights reserved.