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 compliant9mm 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.