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LTC4096EDD Datasheet(PDF) 1 Page - Linear Technology |
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LTC4096EDD Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC4096/LTC4096X 1 4096xf TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION Dual Input Standalone Li-Ion Battery Chargers The LTC®4096/LTC4096X are standalone linear chargers that are capable of charging a single-cell Li-Ion or Li-Poly- mer battery from both wall adapter and USB inputs. The chargers can detect power at the inputs and automatically select the appropriate power source for charging. No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the battery charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. The LTC4096 terminates the charge cycle when the charge current drops below the user programmed termination threshold after the final float voltage is reached. The LTC4096 can be put into shutdown mode reducing the DCIN supply current to 20µA, the USBIN supply current to 10µA, and the battery drain current to less than 2µA even with power applied to both inputs. Other features include trickle charge (LTC4096 only), auto- matic recharge, undervoltage lockout, charge status output and power present output with 120mA drive capability. Dual Input Battery Charger for Single-Cell Li-Ion Battery , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patents including 6522118. ■ Charges Single-Cell Li-Ion Battery from Wall Adapter and USB Inputs ■ Automatic Input Detection (DC Input has Charging Priority) ■ Charge Current Programmable up to 1.2A from Wall Adapter Input ■ C/X Charge Current Termination ■ Input Power Present Output (PWR) with 120mA Drive Capability ■ Independent DC, USB Charge Current Programming ■ Preset Float Voltage with ±0.6% Accuracy ■ Thermal Regulation Maximizes Charge Rate Without Risk of Overheating* ■ Charge Status Output ■ Automatic Recharge ■ 20µA Charger Quiescent Current in Shutdown ■ Available in a Thermally Enhanced, Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package ■ Cellular Telephones ■ MP3 Players ■ Portable Handheld Devices Complete Charge Cycle (1100mAh Battery) LTC4096 DCIN USBIN SUSP IDC IUSB BAT PWR CHRG ITERM 2k 1.24k 2k 1k WALL ADAPTER USB PORT 1 mF 1 mF + 4.2V Li-Ion BATTERY 800mA (WALL) 500mA (USB) 4096 TA01 GND ON OFF TIME (HR) 0 4.2 200 0 400 800 600 1000 1.5 2.5 4096 TA01b 3.6 3.4 5.0 4.0 3.8 2.5 0 0.5 1.0 2.0 3.0 CONSTANT VOLTAGE USBIN = 5V TA = 25°C RIDC = 1.24k RIUSB = 2k |
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