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.
The role of bidirectional charging in the evolving energy landscape Avnet Silica
Power Electronics / Power Management
As reliance on renewable sources like wind and solar continues to grow, the need for efficient energy flow and storage solutions has become more critical than ever.
Read more...How to calculate a buck converter’s inductance
Power Electronics / Power Management
In the buck circuit, the inductor design is a key element that is closely related to system efficiency, the output voltage ripple, and loop stability.
Read more...High-current EMI filters Accutronics
Power Electronics / Power Management
TDK has introduced 20 and 40 A, 80 V DC board-mount EMI filters, reducing differential mode conducted emissions for switching power supplies with high input current requirements.
Read more...Isolated SMD DC-DC converters iCorp Technologies
Power Electronics / Power Management
MinMax has launched a series of isolated SMD DC-DC converters, the MSU01 series delivering 1 W, while the MSU02 series offers 2 W output.
Read more...Next-gen power meter Electrocomp Express
Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.
Read more...Advanced PMIC for high-performance AI applications ASIC Design Services
Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.
Read more...New SiC power MOSFET Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.
Read more...Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.
Read more...Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.
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