LTC4089-3 USB Power Manager with High Voltage Switching Charger FeA Description n Seamless Transition Between Power Sources: Li-Ion The LTC 4089-3 is a USB power manager plus high volt- Battery, USB, and 6V to 36V External Supply age Li-Ion battery charger. This device controls the total n High Efficiency 1.2A Charger from 6V to 36V Input current used by the USB peripheral for operation and with Adaptive Output Control battery charging. Battery charge current is automatically n 3.95V Float Voltage Improves Battery Lifespan and reduced such that the sum of the load current and the High Temperature Safety Margin charge current does not exceed the programmed input n Load Dependent Charging from USB Input current limit. The LTC4089-3 also accommodates high Guarantees Current Compliance voltage power supplies, such as 12V AC/DC wall adapters, n 215m Internal Ideal Diode plus Optional External Firewire, or automotive power. Ideal Diode Controller Provides Low Loss Power The LTC4089-3 provides an adaptive output that tracks Path When External Supply/USB Not Present the battery voltage for high efficiency charging from the n Constant-Current/Constant-Voltage Operation with high voltage input. This 3.95V version of the the standard Thermal Feedback to Maximize Charging Rate with- LTC4089 is intended for applications which have extended out Risk of Overheating battery lifetime requirements or those that require high n Selectable 100% or 20% Current Limit (e.g., temperature (approximately >60C) operation or stor- 500mA/100mA) from USB Input age. Under these conditions, a reduced float voltage will n Preset 3.95V Charge Voltage with 0.8% Accuracy trade-off initial cell capacity for the benefit of increased n C/10 Charge Current Detection Output capacity retention over the life of the battery. The charge n NTC Thermistor Input for Temperature Qualified current is programmable and an end-of-charge status Charging output (CHRG) indicates full charge. Also featured are n Tiny (6mm 3mm 0.75mm) 22-Lead DFN Package programmable total charge time, an NTC thermistor input used to monitor battery temperature while charging and ApplicA automatic recharging of the battery. n Portable USB DevicesGPS Receivers, Cameras, L, LT, LTC and LTM are registered trademarks and Bat-Track, PowerPath and ThinSOT are trademarks of Analog Devices, Inc. All other trademarks are the property of their respective MP3 Players, PDAs owners. Protected by U.S. Patents including 6522118, 6700364, 7733061. At l ApplicA LTC4089 High Voltage 0.1F Battery Charger Efficiency 10H 90 SW HIGH (6V-36V) BOOST CC CURRENT = 970mA HVIN 10F VOLTAGE INPUT 85 NO OUTPUT LOAD 1F HVEN FIGURE 10 SCHEMATIC 80 HVOUT WITH R = 52k PROG 5V (NOM) 75 FROM USB IN HVPR CABLE V BUS 4.7F 70 1k LTC4089-3 65 OUT TO LDOs R , ETC. 4.7F EGS 60 TIMER BAT 55 + 0.1F HVIN = 8V Li-Ion BATTERY 50 CLPROG GND PROG HVIN = 12V HVIN = 24V 45 V (TYP) AVAILABLE INPUT OUT 2k 100k HVIN = 36V V + 0.3V HV INPUT BAT 40 2.5 3 3.5 4 4.5 5V USB ONLY BATTERY VOLTAGE (V) V BAT ONLY BAT 40893 TA01b 40893 TAO1a 40893fa 1 For more information www.linear.com/LTC4089-3 EFFICIENCY (%) tion ypic tions turesLTC4089-3 Absolute MAMMu rA in p Fc A (Notes 1, 2, 3, 4, 5) TOP VIEW Terminal Voltage GND 1 22 HVEN BOOST ...................................................... 0.3V to 50V GND 2 21 HVIN BOOST above SW .....................................................25V HVOUT 3 20 BOOST HVIN, HVEN .............................................. 0.3V to 40V V 4 19 SW C IN, OUT, HVOUT NTC 5 18 HVOUT t < 1ms and Duty Cycle < 1% ................... 0.3V to 7V 23 VNTC 6 17 TIMER DC ............................................................ 0.3V to 6V HVPR 7 16 SUSP BAT .............................................................. 0.3V to 6V CHRG 8 15 HPWR NTC, TIMER, PROG, CLPROG .......0.3V to (V + 0.3V) CC PROG 9 14 CLPROG CHRG, HPWR, SUSP, HVPR ......................... 0.3V to 6V GATE 10 13 OUT Pin Current, DC BAT 11 12 IN IN, OUT, BAT (Note 6) ..............................................2.5A DJC PACKAGE Operating Temperature Range .................40C to 85C 22-LEAD (6mm 3mm) PLASTIC DFN Maximum Operating Junction Temperature ...........110C T = 110C, = 4C/W JMAX JA EXPOSED PAD (PIN 23) IS GND, MUST BE SOLDERED TO PCB Storage Temperature Range .................. 65C to 150C Dro er Fni MA