LMS4684 is a low on-resistance, low voltage dual SPDT analog switch that operates from a 1.8V to 5.5V supply. The LMS4684 features a 0.5Ω RON for its NC switch and 0.8Ω RON for its NO switch at a 2.7V supply. The digital logic inputs are 1.8V logic- compatible with a 2.7V to 3.3V supply. The LMS4684 is available in the 12 bump micro SMD and the 10 lead LLP miniature packages. These PCB real estate saving packages offer extreme performance while saving money with small footprints.
The LMS4684 is a low‑on‑resistance, low‑voltage dual SPDT analog switch that operates from a 1.8 V to 5.5 V supply. It features a 0.5 Q on‑resistance for the normally‑closed (NC) contact and 0.8 Q for the normally‑open (NO) contact at a 2.7 V supply, with digital logic inputs compatible with 1.8 V‑3.3 V levels.
The device is offered in 12‑bump micro SMD and 10‑pin LLP miniature packages, supporting up to 400 mA continuous current. The datasheet provides detailed electrical characteristics, pin descriptions, typical performance curves, and application notes such as over‑voltage protection and PCB layout recommendations.
| Supply voltage range | 1.8 V – 5.5 V |
|---|---|
| NC on‑resistance (Ron) | 0.5 Q @ 2.7 V |
| NO on‑resistance (Ron) | 0.8 Q @ 2.7 V |
| Supply current (typical) | 50 nA |
| Turn‑on time (max) | 65 ns |
| Turn‑off time (max) | 40 ns |
It operates from 1.8 V to 5.5 V.
The NC contact has 0.5 Q and the NO contact has 0.8 Q on‑resistance at a 2.7 V supply.