(PresseBox)
(Ismaning,
2007-04-12)
Linear Technology Corporation introduces the LTC4075HVX, a standalone dual-input linear battery charger that efficiently manages charging single-cell Li-Ion/Polymer batteries from two separate power sources: a wall adapter and USB. Using a constant-current/constant-voltage algorithm, the charger can deliver up to 950mA of charge current from a wall adapter supply, or up to 850mA of charge current from a USB supply and automatically sense the presence of voltage at each input. The final float voltage accuracy is ±0.6% in either case. The LTC4075HVX provides protection up to 22V(max) on both inputs. If the selected power source exceeds the overvoltage lockout limit, the LTC4075HVX will stop charging. The LTC4075HVX disables the trickle charge function, benefiting systems requiring higher charge current during low battery conditions. Applications include PDAs, MP3 players, lightweight portable medical and test equipment and large color screen cell phones.
The LTC4075HVX is equipped with a patented thermal regulation scheme that maximizes the charging rate without the risk of overheating. The device is extremely flexible, enabling programmability via a single resistor of wall adapter supply charge current, USB supply charge current and charge termination current. As a standalone charger, the LTC4075HVX simplifies design, since no external microprocessor is required for charge termination. The IC features undervoltage lockout, automatic recharge, charge status and "power present" status indication.
The LTC4075HVX draws
Press release BoxID: 101591 (LINEAR TECHNOLOGY GmbH)
- LINEAR TECHNOLOGY GmbH
- Oskar-Messter-Straße 24
- 85737 Ismaning
- http://www.linear.com
- Contact person
- Doug Dickinson
- +1 (408) 432-1900 ext 2233
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High-Voltage 950mA Lithium Battery Charger Automatically Selects Between USB or Wall Adapter
LINEAR TECHNOLOGY GmbH
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, uModule(TM) products, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com.
LT, LTC, LTM, Burst Mode and are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
LT, LTC, LTM, Burst Mode and are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
