LTC4010

LTC4010 High Efficiency Standalone Nickel Battery Charger Features n Complete NiMH/NiCd Charger for 1 to 16 Cells n No Microcontroller or Firmware Required n 550kHz PWM Current Source Controller n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 5.5V to 34V n Programmable Charge Current: 5% Accuracy n Automatic Trickle Precharge n –∆V Fast Charge Termination n Optional ∆T/∆t Fast Charge Termination n Optional Temperature Qualification n Automatic NiMH Top-Off Charge n Programmable Timer n Automatic Recharge n Multiple Status Outputs n Micropower Shutdown n 16-Lead Thermally Enhanced TSSOP Package Applications n Integrated or Standalone Battery Charger n Portable Instruments or Consumer Products n Battery-Powered Diagnostics and Control n Back-Up Battery Management Description The LTC®4010 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source controller and all necessary charge initiation, monitoring and termination control circuitry are included. The LTC4010 automatically senses the presence of a DC adapter and battery insertion or removal. When an external DC source is not present, the LTC4010 enters shutdown and supply current drawn from an installed battery drops to the lowest possible level. Heavily discharged batteries are precharged with a trickle current. The LTC4010 can simultaneously use both –∆V and ∆T/∆t fast charge termination t...