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.
Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Microsoft Windows IoT on ARM Altron Arrow
Computer/Embedded Technology
This expansion means that the Windows IoT ecosystem can now harness the power of ARM processors, known for their energy efficiency and versatility.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
Read more...SolidRun unveils new SoM Altron Arrow
AI & ML
SolidRun and Hailo has unveiled a game-changer for engineers and AI product developers with the launch of their market-ready SoM, which packs the cutting-edge capabilities of the Hailo-15H SoC.
Read more...An evolutionary step in customisable logic Altron Arrow
DSP, Micros & Memory
Microchip Technology is offering a tailored hardware solution with the launch of its PIC16F13145 family of microcontrollers, which are outfitted with a new Configurable Logic Block module.
Read more...Compact PCB-mount SMPS RS South Africa
Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.
Read more...AC-DC brick PSU Conical Technologies
Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.
Read more...5 kW switching PSU range Conical Technologies
Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.
printer friendly version