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uModule Battery Chargers with Active Current Limit Deliver 2A from up to 32VIN
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.
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Summary of Features: LTM8061 & LTM8062
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2A uModule ® Battery Chargers |
