austriamicrosystems has expanded its supervisory portfolio with the AS1923, a quad-voltage microprocessor supervisory IC. The AS1923 is designed to monitor up to four system supply voltages without the need for external components, and asserts a single reset if any of the monitored supply voltages drops below its reset threshold.
A variety of different factory-trimmed voltage threshold options are available for monitoring +5,0, +3,3, +3,0, +2,5, +1,8, and -5,0 V supplies with -5% and/or -10% tolerances. The AS1923 is also available with one or two user-adjustable threshold options (via external resistor-divider network) if non-standard voltage thresholds are required. The internally trimmed thresholds and the two reset output options minimise the need for external components, while the open-drain output can be overdriven by external voltages ranging from 0 V to +5,5 V to provide easy interfacing to other devices.
The AS1923 features an active-low reset output that is asserted when any of the 4 monitored voltages are below their respective reset threshold. The reset output is available as open-drain (AS1923A) or 10 μA Current Source Pullup (AS1923B). Reset remains low for a specified reset timeout period (120 ms minimum) after all voltages have stabilised. The output is valid as long as the IN1 or IN2 input voltage remains above 1 V.
The device operates from +1,0 V to +5,5 V, while consuming only 55 μA of supply current. They are available in a small 6-pin SOT23 package, suitable for operating environments ranging from -40°C to +85°C.
Redefining entry-level MCUs NuVision Electronics
DSP, Micros & Memory
The company positions the GD32C231 series as a ‘high-performance entry-level’ solution designed to offer more competitive options for multiple applications.
Read more...3-terminal filters for automotive applications RS South Africa
Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.
Read more...Simple battery charger ICs for any chemistry Altron Arrow
Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.
Read more...Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.
Read more...Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.
Read more...Power and precision in a compact package Conical Technologies
Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.
Read more...Robust PoE module CST Electronics
Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.
Read more...Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version