description
LTC®The 4060 is a complete NiMH or NiCd battery fast charging system. A stand-alone linear charging system requires only a small number of external components.
An external PNP transistor provides charge current and is a user-programmable resistor. A small external capacitor sets the maximum charge time. It is necessary to eliminate the need for external current sense resistors and isolation diodes.
The IC automatically senses the DC input power and battery insertion or removal. Initially charged with a C/5 recharged battery, fast charging before application. Using the -ΔV detection method, fast charging terminates. Backup termination is made by a programmable timer and battery overvoltage detector. An optional external NTC thermistor is available for temperature-based toll qualification. An optional programmable charging function automatically charges and discharges the battery.
Completing a manual shutdown is done with the SHDN pin, while removing input power will automatically put the LTC4060 into sleep mode. In shutdown or sleep mode, the battery drains
The LTC4060 is two low profile (0.75mm) 16-lead 5mm × 3mm DFN and 16-lead TSSOP packages. These two types of metal mold mounting pads expose optimal heat dissipation performance.