LTC4041EUFD#PBF
Overview
The LTC4041 is a complete supercapacitor backup power management system designed to keep 2.9V to 5.5V supply rails active during a main power failure. It features a high-current 2.5A buck battery charger and a high-efficiency boost converter that steps up the supercapacitor voltage to provide backup power. The device includes adjustable input current limiting and an integrated power-path controller for seamless transition between power sources.
Why Choose This Part
The device supports both single supercapacitors and two-cell stacks with an integrated balancer to prevent overvoltage. Its high-current capability allows for fast charging of large capacitance banks, while the low 18uA quiescent current in backup mode preserves energy during long-term storage.
Applications
Getting Started
Evaluation can be performed using the DC2624A demonstration circuit, which provides a pre-configured layout for testing the 2.5A charging and backup performance. Designers should use the LTC4041 datasheet formulas to select the RPROG and RT resistors for setting charge current and backup voltage thresholds.
