MILPITAS, CA – October 4, 2010 – Linear Technology announces the immediate availability of the LTM8061 and LTM8062, the first devices in a new family of complete system-in-a-package uModule® chargers, supporting an output charge current up to 2A. Both parts provide a complete, efficient 1MHz switching step-down charger solution with as few as just one input capacitor. The LTM8061 features active input-current management to protect against supply rail droop, while providing maximum charge current to the load. The LTM8062 actively manages the output charge current to maximize the power sourced from a solar cell following Maximum Peak Power Tracking (MPPT) principles. The LTM8061 and LTM8062 operate from an input voltage range of 4.95V to 32V with support for preconditioning, constant-current and
constant-voltage mode operation. A 0.5% and 0.75% accurate float voltage respectively ensures maximum energy storage at charge termination set by a minimum current threshold detection or adjustable internal timeout.
The LTM8061 is specifically targeted for charging Li-Ion or Li-polymer batteries with float voltages of 4.1V, 4.2V, 8.2V and 8.4V. An externally adjustable float voltage allows the LTM8062 to support charging of single-and multi-cell Li-Ion, Li-polymer, Lithium iron phosphate (LiFePO4) and sealed lead acid (SLA) batteries up to 14.4V.
To maintain the battery at full charge, the LTM8061 and LTM8062 automatically initiate a recharge cycle once the battery voltage drops to 2.5% below the float voltage. Safety features include bad-battery detection and NTC resistor input with fault indicator suitable for use with a LED. An internal input reverse voltage blocking diode is available to prevent leakage current from the battery when the power source is not present. Packaged in a RoHS compliant
9mm x 15mm x 4.32mm LGA package, pricing for the LTM8061 and LTM8062 starts at $8.85 each and $9.85 each, respectively in 1,000-piece quantities. For more information,visit www.linear.com/8061 and www.linear.com/8062.
Summary of Features: LTM8061 & LTM8062
- Complete 1MHz System-in-a-Package Step-Down Battery Chargers in 9mm x 15mm x 4.32mm LGA Package
- 4.95V to 32VDC (40V Abs Max) Operating Input Voltage Range
- Adjustable Charge Current up to 2A (LTM8061)
- Precondition, Constant-Current, Constant-Voltage Charging
- Internal Minimum Current or Time-Out Charge Termination
- Fixed 4.1V, 4.2V, 8.2V, 8.4V Battery Float Voltage (LTM8061)
- Adjustable Battery Float Voltage up to 14.4V (LTM8062)
About Linear Technology
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, uModuleÒ 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.
