The MAX8934 from Maxim is a dual-input linear charger which monitors battery temperature and automatically adjusts the charge current and termination voltage to a safe level according to temperature. When external power is connected, the Smart Power Selector circuitry allows the system to operate with no battery or a deeply discharged battery, and automatically switches the system load from the battery. All necessary current-sense circuitry and power switches for charging and switching the load between the battery and external power are integrated. This results in a compact solution for one-cell, Li+-powered devices.
The device operates with either separate inputs for USB and AC adapter power, or from a single input that accepts both. The DC input’s current limit is adjustable up to 2 A, while the USB input’s current limit is adjustable to 1,5 A. Both DC and USB inputs support 100 mA, 500 mA, 1,5 A and USB-suspend modes. Charge current is adjustable up to 1,5 A to support a wide range of battery capacities. Other features include a thermal regulation loop to prevent overheating, adaptive battery charging to prioritise support of system load over charge current, OVP (overvoltage protection), open-drain charge status and fault outputs, power-OK monitors, charge timers and a battery thermistor monitor.
The MAX8934 is available in a 4 x 4 mm, 28-pin TQFN package that is fully specified over the -40°C to +85°C temperature range.
ABB’s Mission to Zero drives South Africa’s energy transition ABB Electrification Products
Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.
Read more...Energy harvesting using a battery-less IoT system NuVision Electronics
Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.
Read more...Driving power, defining performance Future Electronics
Power Electronics / Power Management
Vishay’s portfolio of inductors, current sense resistors, and MOSFETs provides a comprehensive solution for intelligent power management.
Read more...Battery simulator module simplifies BMS testing Test Dynamics
Power Electronics / Power Management
The PXI/PXIe solution from Pickering Interfaces offers a scalable, modular design for faster development cycles, lower total cost of ownership, and improved safety.
Read more...DC PSU: The cornerstone for efficient solar-storage systems Vepac Electronics
Power Electronics / Power Management
PV energy storage systems are evolving and DC power supplies, with their technical characteristics that are naturally compatible with new energy, have become a key carrier for improving system energy efficiency.
Read more...Converter power modules for 48 V networks Altron Arrow
Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.
Read more...The importance of power integrity Spectrum Concepts
Power Electronics / Power Management
[Sponsored] Behind every high-speed system lies the need for power integrity. Without it, even the cleanest signal paths become compromised.
Read more...Precise multi-vital sign monitoring Future Electronics
Power Electronics / Power Management
The AS7058 by ams OSRAM is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram, electrocardiogram, body impedance sensor, and electrodermal activity sensor.
Read more...Automotive battery diagnostics tester Comtest
Power Electronics / Power Management
Midtronics’ MVT handheld battery tester is a revolutionary tool, powered by MDX-AI, which is set to redefine the standards of battery diagnostics and testing in the automotive industry.
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