MAX77756 Datasheet | Maxim Integrated

EVALUATION KIT AVAILABLE 24V Input, 500m A Buck Regulator with Dual-Input Power MUX General Description The MAX77756 is a synchronous 500m A step-down DC-DC converter with integrated dual-input power multiplexer (MUX). The converter operates on an input supply as low as 3.0V and as high as 24V. Default output voltage is factory-programmed to either 1.8V, 3.3V, or 5.0V. Output voltage is further adjustable through external resistors or an I2C serial interface. The dual-input power MUX selects the higher voltage from two different input sources to power the step-down converter. Control circuitry ensures that only one channel of the MUX is on at a time to prevent cross-conduction between input sources. For single-input applications, the MUX can be bypassed and the step-down converter can be powered directly from the SUP pin. The MAX77756 is available in a small 2.33mm x 1.42mm (0.7mm max height), 15-bump wafer-level package (WLP). For a similar buck converter without a power MUX, refer to the MAX77596. Applications - - USB Type-C Power Delivery Accessories and Devices - - Notebook and Tablet puters - - Home Automation, Low IQ Smart Hubs - - Battery-Powered Systems, Backup Battery, Uninterruptible Rails Ordering Information appears at end of data sheet. Simplified Block Diagram Benefits and Features - - Wide Input Power Supply - 3V to 24V Supply Voltage - 500m A (max) Output Current - 1.8V, 3.3V, or 5.0V Factory-Set VOUT with Optional I2C Control: 1.5V to 7.5V in 50m V Steps - External Feedback Resistor VOUT Option (1V to 99% VSUP) - Hardware or Software Enable - - Dual-Input Power MUX Replaces mon-Cathode Diode Arrays - Automatic Ideal-Diode ORing Voltage Selector - 250mΩ MOSFETs Minimize Power Consumption, BOM, and Solution Size - - Low IQ Enables Always-On Rails - 1.5μA Quiescent Current (Only SUP Powered) - 19μA Quiescent Current (IN1/IN2 Powered) - 88% Peak Efficiency (12VSUP, 3.3VOUT) - - Safe and Easy to Use - Short-Circuit Hiccup Mode and Thermal...