MAX77756
Maxim Integrated
An example of an integrated implementation can be found in the MAX77756 (Figure 5), a synchronous 500mA step-down converter with integrated dual-input power multiplexer (MUX).
Design DocumentAnalog
Optimizing Smart Home Hub Power Management with MAX77756 Integrated Buck Converter
Learn how the MAX77756 buck converter with integrated dual-input power MUX reduces footprint by 28% and improves efficiency for battery-backed smart home hubs.
Overview
This design document details a power management solution for smart home hubs using the MAX77756. The hub requires efficient operation from both a 12V wall adapter and a 6V backup battery. The MAX77756 integrates a 500mA synchronous step-down converter with a dual-input power multiplexer (MUX) into a compact 2.33mm x 1.42mm WLP package. By utilizing low RDS-ON MOSFETs instead of traditional diodes for power switching, the solution achieves 87% peak efficiency and reduces the total application footprint to 33mm2. The device supports an input range of 3V to 24V with output voltages adjustable via resistors or I2C interface.
Use Cases
- Smart home hubs
- Wireless door locks and thermostats
- Battery-backed IoT devices
- Small form-factor household appliances
- Dual-source power switching applications
Topics
MAX77756
buck converter
power multiplexer
smart home hub
step-down converter
dual-input MUX
power management IC
PMIC
battery backup
wafer-level package
Referenced Parts
| MAX77756 | Maxim Integrated | An example of an integrated implementation can be found in the MAX77756 (Figure 5), a synchronous 500mA step-down converter with integrated dual-input power multiplexer (MUX). |