LTM4719 Dual-Input Low-Noise Step-Down Power Module

The LTM4719 from Analog Devices is a dual-input, 150 mA milliampere synchronous buck power micromodule regulator with an integrated battery health monitor. Designed for portable and backup-powered systems, it supports seamless and automatic transition between two power sources, eliminating the need for hold-up capacitors and minimizing output disturbances. The module operates from input voltages ranging from 2.4 V to 42 V and delivers an adjustable output from 1 V to 4.2 V.

The LTM4719 includes a low-dropout linear regulator for post-regulation, achieving low output noise and ultralow quiescent current, making it ideal for battery-powered applications. It features a built-in coulomb counter accessible via I²C, enabling real-time monitoring of battery voltage, impedance, and temperature. Programmable undervoltage lockout thresholds, discharge alarms, and fault indicators enhance system reliability. The compact 64-pin ball grid array package supports space-constrained designs in industrial, medical, and portable electronics.