LTC4096/LTC4096X Dual Input Standalone Li-Ion Battery Chargers FEATURES DESCRIPTION Charges Single-Cell Li-Ion Battery from Wall The LTC 4096/LTC4096X are standalone linear chargers Adapter and USB Inputs that are capable of charging a single-cell Li-Ion or Li-Poly- Automatic Input Detection (DC Input has Charging mer battery from both wall adapter and USB inputs. The chargers can detect power at the inputs and automatically Priority) select the appropriate power source for charging. Charge Current Programmable up to 1.2A from Wall Adapter Input No external sense resistor or blocking diode is required C/X Charge Current Termination for charging due to the internal MOSFET architecture. Input Power Present Output (PWR) with 120mA Internal thermal feedback regulates the battery charge Drive Capability current to maintain a constant die temperature during high Independent DC, USB Charge Current Programming power operation or high ambient temperature conditions. Preset Float Voltage with 0.6% Accuracy The oat voltage is xed at 4.2V and the charge current Thermal Regulation Maximizes Charge Rate Without is programmed with an external resistor. The LTC4096 Risk of Overheating* terminates the charge cycle when the charge current drops Charge Status Output below the user programmed termination threshold after Automatic Recharge the nal oat voltage is reached. The LTC4096 can be put into shutdown mode reducing the DCIN supply current to 20A Charger Quiescent Current in Shutdown 20A, the USBIN supply current to 10A, and the battery Available in a Thermally Enhanced, Low Pro le drain current to less than 2A even with power applied (0.75mm) 10-Lead (3mm 3mm) DFN Package to both inputs. Other features include trickle charge (LTC4096 only), auto- APPLICATIONS matic recharge, undervoltage lockout, charge status output and power present output with 120mA drive capability. Cellular Telephones MP3 Players , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Portable Handheld Devices *Protected by U.S. Patents including 6522118. TYPICAL APPLICATION Dual Input Battery Charger for Single-Cell Li-Ion Battery Complete Charge Cycle (1100mAh Battery) 1000 800mA (WALL) 800 500mA (USB) LTC4096 WALL 600 ADAPTER DCIN BAT 400 200 USBIN PWR 4.2V USB + 0 Li-Ion CONSTANT VOLTAGE PORT 1 F 1k ON OFF SUSP 4.2 BATTERY 4.0 IDC CHRG 1 F USBIN = 5V 3.8 1.24k T = 25C A IUSB ITERM 3.6 R = 1.24k IDC GND 3.4 R = 2k 2k 2k IUSB 5.0 2.5 4096 TA01 0 0 0.5 1.0 1.5 2.0 2.5 3.0 TIME (HR) 4096 TA01b 4096xf 1 DCIN BATTERY CHARGE VOLTAGE (V) VOLTAGE (V) CURRENT (mA)LTC4096/LTC4096X ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1,7) TOP VIEW V , V DCIN USBIN DCIN 10 BAT t < 1ms and Duty Cycle < 1% .................. 0.3V to 7V 1 USBIN 2 9 IDC Steady State ............................................. 0.3V to 6V PWR 3 11 8 GND BAT, CHRG, SUSP ........................................ 0.3V to 6V CHRG 4 7 IUSB IDC, IUSB, ITERM ...........................0.3V to VCC + 0.3V SUSP 5 6 ITERM BAT Short-Circuit Duration ............................Continuous DD PACKAGE PWR Short-Circuit Duration ..........................Continuous 10-LEAD (3mm 3mm) PLASTIC DFN T = 125C, = 40C/W (Note 3) BAT, DCIN Pin Current (Note 6) ..............................1.25A JMAX JA EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB USBIN Pin Current (Note 6) .....................................1.1A ORDER PART NUMBER DD PART MARKING IDC, IUSB, ITERM Pin Current ............................1.25mA Junction Temperature ........................................... 125C LTC4096EDD LCSJ Operating Temperature Range (Note 2) ... 40C to 85C LTC4096XEDD LCLM Storage Temperature Range ................... 65C to 125C Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: