Maxim's MAX6846-MAX6849 are adjustable single-/dual-level battery monitors combined with independent microprocessor supervisory reset circuits. These devices monitor single lithium-ion (Li+) cell or multicell NiMH/NiCd/alkaline applications. The MAX6846-MAX6849 consume only 2,5 µA of supply current, making them ideal for portable handheld applications.
In typical systems, the low-battery output (LBO) asserts and disconnects the load from the system when the battery voltage falls below its threshold. The battery voltage often recovers and reconnects the load, only to cause the LBO to reassert and cause chatter. These devices eliminate chattering by providing internal hysteresis. The MAX6846-MAX6849 have user-adjustable thresholds for setting the voltage-trip thresholds. All devices have a low-battery output that can be used to shut the system off when the battery is dead. The MAX6848/9 have an additional low-battery output that can provide an early low-battery warning, allowing the system to enter a low-power mode or to back up critical data into memory. All low-battery outputs have active-low, open-drain configurations.
The MAX6846-MAX6849 also feature an independent microprocessor supervisory circuit that monitors system voltages from 1,8 to 3,3 V. Seven factory-trimmed reset thresholds are available with two reset timeout options of 150 ms or 1200 ms (min). The MAX6846/8 have an active-low, open-drain reset, and the MAX6847/9 have an active-low, push-pull reset output. The MAX6846/7 also have a one-shot manual-reset input.
The devices are available in 8-pin SOT23 packages and are fully specified from -40°C to +85°C.
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.
Read more...Advanced 3-phase controllers Future Electronics
Power Electronics / Power Management
The STSPIN32G0 by STMicroelectronics is a family of highly integrated system-in-package providing solution suitable for driving three-phase brushless motors.
Read more...Converting high voltages without a transformer Altron Arrow
Editor's Choice Power Electronics / Power Management
With appropriate power converter ICs, such as the LTC7897 from Analog Devices, many applications can be suitably powered without having to use complex and cost-intensive transformers.
Read more...Reliable power for demanding applications Conical Technologies
Power Electronics / Power Management
The Mibbo Power MTR480 three-phase DIN-rail power supply is engineered to meet stringent industrial automation requirements, offering dependable performance in environments where downtime is not an option.
Read more...NeoMesh on LoRa CST Electronics
Telecoms, Datacoms, Wireless, IoT
Thomas Steen Halkier, CEO of NeoCortec, recently gave a keynote speech where he spoke about “NeoMesh on LoRa: Bringing true mesh networking to the LoRa PHY”.
Read more...Powering performance and precision Future Electronics
Power Electronics / Power Management
onsemi’s innovative T10 series MOSFETs, available in 40 V and 80 V versions, are designed for high-efficiency, fast-switching, and power-dense applications.
Read more...Programmable flyback switcher ICs Future Electronics
Power Electronics / Power Management
Power Integrations has announced the release of the InnoSwitch5-Pro family of programmable flyback switcher ICs, which offer more than 95% efficiency in streamlined AC-DC converter designs.
Read more...Multilayer chip beads with 8 A rating RS South Africa
Power Electronics / Power Management
TDK Corporation has expanded its MPZ1608-PH series of large-current multilayer chip beads for automotive and commercial power supply lines.
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