LTC4006EGN-2

电池管理 LTC4006 - 4A, High Efficiency, Standalone Li-Ion Battery Charger

**DESCRIPTION**

The LTC®4006 is a complete constant-current/constant voltage charger controller for 2-, 3- or 4-cell lithium bat teries in a small package using few external components. The PWM controller is a synchronous, quasi-constant frequency, constant off-time architecture that will not generate audible noise even when using ceramic capacitors.

**FEATURES**

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*Complete Charger Controller for 2-, 3- or 4-Cell**

**Lithium-Ion Batteries**

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*High Conversion Efficiency: Up to 96%**

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*Output Currents Exceeding 4A**

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*0.8% Accurate Preset Voltages: 8.4V, 12.6V, 16.8V**

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*Built-In Charge Termination with Automatic Restart**

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*AC Adapter Current Limiting Maximizes Charge Rate**

■ Automatic Conditioning of Deeply Discharged Batteries

■ Thermistor Input for Temperature Qualified Charging

■ Wide Input Voltage Range: 6V to 28V

■ 0.5V Dropout Voltage; Maximum Duty Cycle: 98%

■ Programmable Charge Current: ±4% Accuracy

■ Indicator Outputs for Charging, C/10 Current Detection and AC Adapter Present

■ Charging Current Monitor Output

■ 16-Pin Narrow SSOP Package

**APPLICATION**

■ Notebook Computers

■ Portable Instruments

■ Battery-Backup Systems

■ Standalone Li-Ion Chargers