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
Intel, Sheldon Cooper promote 3D camera technology
November 24, 2014
Intel has secured the services of Jim Parsons, who plays Sheldon Cooper on the comedy television series The Big Bang Theory, ...
NXP acquires Quintic's Wearable and BTLE IC business
BMW and Tesla look at car battery alliance
Interview R&S: Communications become mission-critical
The engineering desk-to-bench ratio
Rohm's European Design Center in growth phase
November 21, 2014
At Electronica EE Times Europe caught up with Michael Davis European R&D director at the European Design Center (EDC) of ...
Combo inertial sensor market on 19% CAGR, says Yole.
US, China pushing industrial chip market growth, says IHS
LA Auto Show: Hydrogen fuel cell drive is back
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
- 5 Best Practices for Designing Flexible Test Stations
InterviewInterview R&S: Communications become mission-critical
Driven by new application fields in the Internet of Things (IoT) and machine-to-machine (M2M) context, communications technologies are undergoing massive changes. This goes along with enormous challenges ...
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
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...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.
Most popular news
- Could magnesium battery innovation end lithium's dominance?
- From warm to cool white: colour-temperature tunable LEDs
- Li-Fi communication module wirelessly transfers data at 1-Gbps
- Supercapacitor innovation promises panel-powered cars in five years
- Rebranding the revolution: the future of IoT is embedded