The Maxim MAX6819/MAX6820 power-supply sequencers are designed for dual-voltage processors and multivoltage systems. These devices monitor a primary supply voltage to enable or disable an external N-channel MOSFET switch for the secondary supply voltage. The devices help control supply voltage sequencing for systems components when a system's turn on/off characteristics cannot be guaranteed such as from a system bus or silver box supply.
When the primary supply is below a user-adjustable voltage threshold, the N-channel MOSFET switch is off, keeping the secondary supply away from the system component. When the primary supply exceeds the voltage threshold, the internal charge pump turns on after a sequence delay of 200 ms and drives the external N-channel MOSFET. The charge pump allows the N-channel MOSFET to be fully enhanced to reduce on-resistance losses.
The MAX6819 features a logic-driven enable input to enable and disable the MOSFET. The MAX6820 provides for the sequence delay to be externally adjusted with a capacitor. For multi-voltage systems, these devices can be daisy-chained together to sequence more than two supplies within a system.
The devices operate from -40 to +125°C and are available in a 6-pin SOT23 package.
6U VPX power supply 23 October 2019, Conical Technologies
, Power Electronics / Power Management
SynQor announced its new universal 85 to 264 Vrms AC-input VPX power supply for critical military, aerospace and shipboard applications. This 6U VPX power supply, designed to meet VITA 46 standards, allows ...
Read more...Automotive H-bridge driver 23 October 2019, Altron Arrow
, Power Electronics / Power Management
The TLE985x H-bridge MOSFET driver IC product family from Infineon Technologies is an ideal fit for compact and cost-effective motor control solutions. It targets automotive applications such as sunroof, ...
Read more...40 Watt DC-DC converters for industrial use 23 October 2019, Conical Technologies
, Power Electronics / Power Management
Traco Power announced the release of its new TEN 40WEI range of industrial converters. Due to a new design approach, it offers a cost-efficient solution with no concession on quality or reliability as ...
Read more...Neuromorphic memory solution for AI 23 October 2019, Altron Arrow
, DSP, Micros & Memory
As artificial intelligence (AI) processing moves from the cloud to the edge of the network, battery powered and deeply embedded devices are challenged to perform AI functions – like computer vision and ...
Read more...Neuromorphic memory solution for AI 25 November 2019, Altron Arrow
, DSP, Micros & Memory
As artificial intelligence (AI) processing moves from the cloud to the edge of the network, battery powered and deeply embedded devices are challenged to perform AI functions – like computer vision and ...
Read more...Design considerations for powering remote Bluetooth beacons 25 November 2019, Avnet South Africa
, Power Electronics / Power Management, Editor's Choice
One of the most exciting low-power wireless technologies to emerge in the last couple of years is Bluetooth beacon technology, which involves placing small electronic beacon devices at points of interest that broadcast packets of information via Bluetooth low energy to the smartphones of passers-by.
Read more...Bits to beams: RF technology evolution for 5G millimetre-wave radios 25 November 2019, Altron Arrow
, Telecoms, Datacoms, Wireless, IoT
When the wireless industry embarked on the creation of 5G, 2020 seemed so far away. Now we are quickly closing in on 2020 and this will most certainly be the 5G decade. Every day there are announcements ...
Read more...Automotive-compliant linear regulators 25 November 2019, Altron Arrow
, Power Electronics / Power Management
Diodes Incorporated introduced the company’s first low-dropout (LDO) linear regulators compliant to AEC-Q100 Grade 1.
The AP7315Q and AP7343Q deliver 150 mA and 300 mA respectively and are suitable ...
Read more...40 Watt DC-DC converters for industrial use 25 November 2019, Conical Technologies
, Power Electronics / Power Management
Traco Power announced the release of its new TEN 40WEI range of industrial converters. Due to a new design approach, it offers a cost-efficient solution with no concession on quality or reliability as ...
Read more...NB-IoT module for compact designs 25 November 2019, Altron Arrow
, Telecoms, Datacoms, Wireless, IoT
The NL865H2 is a new LTE Category NB2 (also known as NB-IoT) addition to the widely deployed Telit xL865 product family. With its 24,4 x 24,4 mm VQFN footprint, the NL865H2 is designed for size-sensitive ...
printer friendly version