Maxim unveils industry's first battery charger with automatic USB enumeration
September 10, 2010 // Paul Buckley
Maxim Integrated Products has introduced a linear battery charger for Bluetooth headsets and portable devices that is compatible with the USB Battery Charging Specification, Revision 1.1. The MAX8895 is equipped with automatic adapter detection for distinguishing between USB devices, USB chargers, and dedicated chargers.
The device also integrates a USB enumeration function that automatically negotiates with the USB host to optimize charging current without processor intervention. The capability eliminates the need for a separate microcontroller and system software, thus providing the industry's only stand-alone charging solution.
Smart Power Selector functionality provides seamless distribution of power from the USB power input (Vbus) to the battery and system load. This allows simultaneous charging of the battery while powering the system, as well as operation of the portable device with a discharged battery or no battery. The battery also supplements Vbus when the system load exceeds the Vbus input current limit.
The MAX8895 integrates a battery-disconnect switch, current-sense circuit, thermal-regulation circuitry, MOSFET pass elements, and overvoltage protection (OVP) up to 16 V, providing an easy-to-implement, extremely compact charger solution. Flexible programming options include fast-charge current, termination current, and charge timer duration. The MAX8895 also supports adaptive battery charging, which reduces charge current when necessary to prevent the charge source from collapsing. Other features include a charge-status flag, charge-fault flag, power-OK monitor, battery thermistor monitor, timer for safe charging, and undervoltage lockout (UVLO).
Availability and Pricing
The MAX8895 is offered with two USB options, the MAX8895X (low speed) and the MAX8895Y (full speed), both of which operate from a 4.0 V to 6.6 V supply. Available in a 2.5 mm x 2.5 mm, 25-bump WLP (0.4 mm pitch), the MAX8895 is fully specified over the -40 to +85 degrees Celsius extended temperature range. Prices start at 1.50 US Dollars (2500-up, FOB USA). Samples and evaluation kits are available upon request.
More information about the new MAX8895 linear battery charger at:
Visit Maxim Integrated Products at www.maxim-ic.com
Extensible CPU cores exploit IoT's vast potential
May 22, 2015
Cisco Systems has predicted that by 2020, there will be 50 billion “things” connected to the Internet up from 15 billion ...
Audi connects to Baidu, Huawei at CES Asia
New class of magnets attract energy harvesting attention
Sony raises image sensor capex...again
OneSpin Solutions takes formal verification to the App store
Why the speculations on Nokia’s map service HERE run hot
May 21, 2015
Nokia’s digital map service HERE is on the block – and a crowd of suitors are outbidding each other. But some remain at the ...
Flexible OLED display peels off the wall
Irish battery R&D facility targets advanced material development
Bosch adjusts course for future mobility requirements
- Integrating GPS into consumer products
- Controlling LED Lighting Using Triacs and Quadracs
- Automotive Designs Demand Low EMI Synchronous Buck Converters
- Smart Capacitive Design Tips
InterviewCEO interview: What's next after Tower's turn-around?
May 2015 marks the tenth anniversary of Russell Ellwanger taking over as CEO of speciality foundry Tower Semiconductor Ltd. (Migdael Haemek, Israel), which now trades as TowerJazz. And so EE Times Europe ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
In this month's reader offer, Analog Devices is giving away five Blackfin Low-Power Imaging Platform (BLIP) Development Systems (ADZS-BF707-BLIP2), worth 199 dollars each, for EETimes Europe's readers to win.
Targeting demanding ultra-low-power, real-time applications for image sensing and advanced audio, the development platform leverages the company’s ADSP-BF707BBCZ-4 Blackfin processor as...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.