The LTC4060EFE#PBF is a standalone linear NiMH/NiCd fast battery charger in 16 pin TSSOP package. Only few external components are needed to design standalone linear charging system. An external PNP transistor provides charge current that is user programmable with resistor. A small external capacitor sets maximum charge time. No external current sense resistor or blocking diode is needed. The IC automatically senses DC input supply and battery insertion or removal. Heavily discharged batteries are initially charged at C/5 rate before fast charge is applied. Fast charge is terminated using the -ΔV detection method. Backup termination consists of a programmable timer and battery overvoltage detector. An optional external NTC thermistor can be used for temperature based qualification of charging. An optional programmable recharge feature automatically recharges batteries after discharge.
● Battery charge voltage of 2.8V
● Programmable fast charge current from 0.4A to 2A
● Input supply range from 4.5V to 10V
● Complete fast charger controller for single, 2, 3 or 4 series cell NiMH/NiCd batteries
● No firmware or microcontroller required
● No sense resistor or blocking diode required
● Accuracy of charge current is ±5% at 2A
● Optional temperature qualified charging
● Precharge for heavily discharged batteries
● Operating ambient temperature range from -40°C to 85°C
