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Battery chargers output 2A from up to 32V input

Posted: 08 Oct 2010 ?? ?Print Version ?Bookmark and Share

Keywords:Li-Ion? Li-polymer? battery charger?

Linear Technology has made available two new devices in a new line of complete system-in-a-package uModule chargers capable of supporting an output charge current of up to 2A.

The LTM8061 and LTM8062 accept input voltages of 4.95V to 32V with support for preconditioning, constant-current and constant-voltage mode operation. Float voltage accurate to within 0.5 percent and 0.75 percent respectively ensures maximum energy storage at charge termination set by a minimum current threshold detection or adjustable internal timeout.

Linear Technology The LTM8061 and LTM8062 battery chargers

Both devices can use as few as one input capacitor to ensure a complete, efficient 1MHz switching step-down charger solution and both automatically initiate a recharge cycle once the battery voltage drops to 2.5 percent below the float voltage.

The LTM8061 boasts of active input-current management to ensure against supply rail droop while providing maximum charge current to the load. The LTM8062, meanwhile, manages the output charge current to optimize the power from a solar cell.

The LTM8061 is ideal for charging Li-Ion or Li-polymer batteries with float voltages of 4.1V, 4.2V, 8.2V and 8.4V. The LTM8062 has an externally adjustable float voltage for the charging of single-and multi-cell Li-Ion, Li-polymer, Lithium iron phosphate and sealed lead acid batteries up to 14.4V.

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