LTC4000

LTC4000 Features High Voltage High Current Controller for Battery Charging and Power Management Description n Complete High Performance Battery Charger When Paired with a DC/DC Converter n Wide Input and Output Voltage Range: 3V to 60V n Input Ideal Diode for Low Loss Reverse Blocking and Load Sharing n Output Ideal Diode for Low Loss PowerPath™ and Load Sharing with the Battery n Instant-On Operation with Heavily Discharged Battery n Programmable Input and Charge Current: ±1% Accuracy n ±0.25% Accurate Programmable Float Voltage n Programmable C/X or Timer Based Charge Termination n NTC Input for Temperature Qualified Charging n 28-Lead 4mm × 5mm QFN or SSOP Packages Applications n High Power Battery Charger Systems n High Performance Portable Instruments n Industrial Battery Equipped Devices n Notebook/Subnotebook Computers The LTC®4000 is a high voltage, high performance controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers. Features of the LTC4000’s battery charger include: accurate (±0.25%) programmable float voltage, selectable timer or current termination, temperature qualified charging using an NTC thermistor, automatic recharge, C/10 trickle charge for deeply discharged cells, bad battery detection and status indicator outputs. The battery charger also includes precision current sensing that allows lower sense voltages for high current applications. The LTC4000 supports intelligent PowerPath cont...