Analog Devices Inc./Maxim Integrated

The MAX77816 is a high-current, high-efficiency buck-boost regulator targeting single-cell Li-ion battery-powered applications. It supports a wide output voltage range from 2.60V to 5.14V. The IC allows 5A (TYP) maximum switch current. In buck mode, the output current can go as high as 4A, and in boost mode, the maximum output current can be 3A. A unique control algorithm allows high efficiency, outstanding line/load transient response, and seamless transition between buck and boost modes.The IC features I2C-compatible serial interface. The I2C interface allows the output voltage to be dynamically adjusted thus enabling finer control of system power consumption. The I2C interface also provides features such as enable control and device status monitoring.The multifunction GPIO pin is register settable to 5 different options such as FPWM mode enable and inductor peak current level selection. These options provide design flexibility that allows the IC to cover a wide range of applications and use cases.Design Solution: Boost the Run-Time of Portable Electronics with a One-Two Punch ›ApplicationsBattery-Powered ApplicationsRF Power AmplifiersSmartphones and TabletsWearable DevicesWireless Communication Devices

The MAX77831 is a high-efficiency, high-performance buck-boost converter targeted for systems requiring wide input voltage range (2.5V to 16V). It features a 7A switching current and can supply up to 6A output current in buck mode and up to 4A in boost mode (boost ratio ≤ 1.3).The IC is available in 5V default output voltage when using internal feedback resistors. The IC can also be configured to any default output voltages between 3V and 15V when using external feedback resistors. The output voltage is adjustable dynamically through the I2C serial interface (see the Output Voltage Configuration section). The IC only operates in forced-PWM (FPWM) mode.The SEL pin allows a single external resistor to program four different I2C interface slave addresses, four different switching-current limit thresholds, and selection between external/internal feedback resistors. The different switching-current limit thresholds allow the use of lower profile and smaller external components that are optimized for a particular application. The use of external feedback resistors allows for a wider output voltage range and customizable output voltages at startup.The I2C serial interface is optional and allows dynamically controlling the output voltage, the slew rate of the output voltage change, switching-current limit threshold, and switching frequency. The I2C-programmed settings have priority over the RSELdecoded settings.The MAX77831 is available in a 2.83mm x 2.03mm 35-bump wafer level package (WLP).ApplicationsNon-Battery Powered Applications up to 16V InputBattery Powered Applications up to 16V Input with EN Control

The MAX77837 is the industry's smallest nanoPower buck-boost converter optimized for single-cell battery chemistries that are used in wearable and Internet of Things (IoT) applications.The converter operates on an input supply between 1.8V to 5.5V. Output voltages between 1.8V to 5.2V are set through resistors connected to two hardware control pins. The IC can operate in Continuous Conduction Mode (CCM), Skip Mode, and a Low-Power Mode to ensure high efficiency over a wide load current range. In addition, the IC features an ultra-low quiescent current of 430nA (typical) and a shutdown current of 10nA (typical), making it ideal for battery-powered applications requiring a long standby time.The MAX77837 offers two unique hardware control pins, SEL1 and SEL2. The resistor connected at SEL1 (RSEL1) selects a predefined combination of two output voltages between 1.8V to 5.2V, OUT1 and OUT2. The resistor connected at SEL2 (RSEL2) allows two different configurations of switch current limit at 1050mA and 400mA to optimize external component size, enable or disable Dynamic Voltage Scaling (DVS) function, and select either hiccup or latch-off mode during a hard short event. RSEL2can also configure the startup voltage as OUT1 or OUT2, and the DVS function can change the output voltage from a lower VOUTto a higher VOUTas required without powering down the part.The MAX77837 is available in both a 1.84mm x 1.03mm, 8-bump wafer-level package (WLP) with a bump pitch of 0.4mm and a 2.5mm x 2.0mm, 8-lead Flip Chip QFN package (FC2QFN).APPLICATIONSLPWAN SoC Companion Power SolutionIoT and Wearable ApplicationsAsset TrackersSmart Meters