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LTC4010 Datasheet(PDF) 1 Page - Linear Technology |
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LTC4010 Datasheet(HTML) 1 Page - Linear Technology |
1 / 24 page LTC4010 4010fb Typical applicaTion DescripTion High Efficiency Standalone Nickel Battery Charger 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 adapterandbatteryinsertionorremoval.Whenanexternal 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 ter- mination techniques and can detect various battery faults. If necessary, a top-off charge is automatically applied to NiMH batteries after fast charging is completed. The IC will also resume charging if the battery self-discharges after a full charge cycle. All LTC4010 charging operations are qualified by actual charge time and maximum average cell voltage. Charging mayalsobegatedbyminimumandmaximumtemperature limits. NiMH or NiCd fast charge termination parameters are pin selectable. L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 2A NiMH Battery Charger FeaTures applicaTions n Integrated or Standalone Battery Charger n Portable Instruments or Consumer Products n Battery-Powered Diagnostics and Control n Back-Up Battery Management 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 2A NiMH Charge Cycle at 1C FAULT CHRG READY VCC TGATE VCDIV VCELL VTEMP LTC4010 TIMER INTVDD GND CHEM SENSE BAT FROM ADAPTER 9V 47µH TO SYSTEM LOAD 0.05 2-CELL NiMH PACK WITH 10k NTC 4010 TA01a 3k 49.9k 10k 10k 0.1µF 68nF 10µF 33nF 10µF BGATE PGND TIME (MINUTES) 0 1.25 1.30 1.40 1.45 1.50 1.60 4010 TA01b 1.35 1.55 28 30 34 36 38 42 32 40 40 100 20 60 80 SINGLE CELL VOLTAGE CHARGE CURRRENT BATTERY TEMPERATURE 2A 1A TOP OFF |
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