LTC4053-4.2 USB Compatible Lithium-Ion Battery Charger with Thermal Regulation FEATURES DESCRIPTIO Charges Single-Cell Li-Ion Batteries Directly from The LTC 4053 is a standalone linear charger for lithium- USB Port ion batteries that can be powered directly from a USB port. Thermal Regulation Maximizes Charge Rate The IC contains an on-chip power MOSFET and eliminates without Risk of Overheating* the need for an external sense resistor and blocking diode. Programmable Charge Current with 7% Accuracy Thermal regulation automatically adjusts charge current Low Dropout Operation to limit die temperature during high power or high ambient No External MOSFET, Sense Resistor or Blocking temperature conditions. This feature protects the end Diode Required product and the LTC4053 from thermal stress while the IC Programmable Charge Termination Timer charges the battery at maximum rate without interruption. Preset Charge Voltage with 1% Accuracy The charge current and charge time can be set externally C/10 Charge Current Detection Output with a single resistor and capacitor, respectively. When AC Present Logic Output the input supply (wall adapter or USB supply) is removed, 25A Supply Current in Shutdown Mode the LTC4053 automatically enters a low current sleep Automatic Recharge mode, dropping the battery drain current to less than 5A. Charge Current Monitor Useful for Gas Gauging The LTC4053 also includes NTC temperature sensing, Thermistor Input for Temperature Qualified Charging C/10 detection circuitry, AC present logic, low battery Available in 10-pin thermally enhanced MSOP and charge conditioning (trickle charging) and shutdown (25A low profile (0.75mm) 3mm 3mm DFN packages U supply current). APPLICATIO S The LTC4053 is available in 10-pin thermally enhanced Cellular Telephones MSOP and low profile (0.75mm) DFN packages. Handheld Computers , LTC and LT are registered trademarks of Linear Technology Corporation. Protected by U.S. Patents including 6522118, 6700364. Charging Docks and Cradles MP3 Players Digital Cameras TYPICAL APPLICATIO Charge Current vs Input Voltage USB Powered Standalone Li-Ion Charger 600 T = 25C A R = 3k PROG V = 3.95V BAT 500 2 9 SYSTEM USB PORT V BAT CC LOAD 4.35V TO 5.5V + Li-Ion 400 V = 4.05V BATTERY BAT LTC4053-4.2 300 4 8 TIMER SUSPEND SHDN 200 GND NTC PROG 4.7F USB CONTROL 3.74k V = 4.15V 56 7 BAT C 100 100mA/ 0.1F 15k 500mA 0 4.0 4.5 5.0 5.5 V (V) CC 4053TA01 4053 G04 4053fa 1 I (mA) BAT U ULTC4053-4.2 (Note 1) ABSOLUTE AXI U RATI GS Input Supply Voltage (V ) ....................................... 7V Junction Temperature.......................................... 125C CC BAT ........................................................................... 7V Operating Temperature Range (Note 3) ...40C to 85C NTC, SHDN, TIMER, PROG ............ 0.3V to V + 0.3V Storage Temperature Range CC CHRG, FAULT, ACPR .................................. 0.3V to 7V MSE .................................................. 65C to 150C BAT Short-Circuit Duration .......................... Continuous DD .................................................... 65C to 125C BAT Current (Note 2) ............................................. 1.3A Lead Temperature (Soldering, 10 sec) PROG Current (Note 2) ....................................... 1.3mA MSE.................................................................. 300C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART TOP VIEW 10 CHRG 1 ACPR NUMBER NUMBER CHRG 1 10 ACPR V 2 9 BAT CC V 2 9 BAT CC 11 FAULT 3 11 8 SHDN FAULT 3 8 SHDN LTC4053EDD-4.2 LTC4053EMSE-4.2 TIMER 4 7 PROG TIMER 4 7 PROG GND 5 6 NTC GND 5 6 NTC MSE EXPOSED PAD PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE DD PART MARKING MSE PART MARKING T = 125C, = 40C/W (NOTE 4) 10-LEAD (3mm 3mm) PLASTIC DFN JMAX JA EXPOSED PAD (PIN 11) IS GND T = 125C, = 40C/W (NOTE 4) JMAX JA LBQC LTZT (MUST BE SOLDERED TO PCB) EXPOSED PAD (PIN 11) IS GND (MUST BE SOLDERED TO PCB) Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: