Corp.'s LTC4071 is a tiny shunt battery
system for Li-Ion/Polymer batteries that integrates a charger and battery pack
protection in one IC. The LTC4071, with its 550nA operating current, charges
and protects batteries from previously unusable very low current, intermittent
or continuous charging sources. The LTC4071 can charge at currents up to 50mA.
A near zero current (<0.1nA) low battery latching disconnect function
protects even low capacity batteries from deep discharge and potentially
irreparable damage. LTC4071 is housed in a low
profile (0.75 mm) 8-lead 2 x 3 mm DFN package. The device's feature set is
useful for high impedance, lower power charging source applications, such as
energy scavenging/harvesting, resistive isolation or solar-powered systems. It
can charge Li-Ion/Polymer, coin cell and thin film batteries.
With pin-selectable settings of 4.0, 4.1, or 4.2V, the LTC4071's 1 percent
accurate battery float voltage allows the user to optimize the balance between
battery capacity and lifetime. An independent high battery supervisory status
output indicates a near-fully charged battery. The internal thermal battery
conditioner reduces the float voltage to protect Li-Ion/Polymer cells at
elevated battery temperatures. Multiple-cell battery stacks can be charged and
balanced by configuring several LTC4071 ICs in series.
The LTC4071 is offered in an 8-lead MSOP package. The devices are rated for
operation from -40 to 125C. 1,000 piece quantity pricing is $2.20 and $2.30 for
the E grade in the DFN & MSOP packages respectively, and $2.53 and $2.65
for the I grade in DFN & MSOP respectively.
HP revealed more of its 3D printing plans in a recent webinar. Senior vice president of inkjet and graphics solution business Stephen Nigro spoke about how the technology works and expanded on HP's vision of open collaboration to commercialize its Multi Jet Fusion 3D printing technology for end-production, and open collaboration on new materials. He also said HP will create software to help users decide when to use Multi Jet Fusion versus conventional subtractive manufacturing.
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.