LTC4089/LTC4089-5 USB Power Manager with High Voltage Switching Charger Fe A Description n Seamless Transition Between Power Sources: Li-Ion The LTC 4089/LTC4089-5 are USB power managers Battery, USB, and 6V to 36V External Supply plus high voltage Li-Ion battery chargers. These devices n High Efficiency 1.2A Charger from 6V to 36V Input control the total current used by the USB peripheral for with Adaptive Output Control (LTC4089) operation and battery charging. Battery charge current n Load Dependent Charging from USB Input is automatically reduced such that the sum of the load Guarantees Current Compliance current and the charge current does not exceed the pro- n 215m Internal Ideal Diode plus Optional External grammed input current limit. The LTC4089/LTC4089-5 Ideal Diode Controller Provides Low Loss Power also accommodate high voltage power supplies, such as Path When External Supply/USB Not Present 12V AC-DC wall adapters, Firewire, or automotive power. n Constant-Current/Constant-Voltage Operation with The LTC4089 provides an adaptive output that tracks the Thermal Feedback to Maximize Charging Rate with- battery voltage for high efficiency charging from the high out Risk of Overheating voltage input. The LTC4089-5 provides a fixed 5V output n Selectable 100% or 20% Current Limit (e.g., from the high voltage input to charge single cell Li-Ion 500mA/100mA) from USB Input batteries. The charge current is programmable and an n Preset 4.2V Charge Voltage with 0.8% Accuracy end-of-charge status output (CHRG) indicates full charge. n C/10 Charge Current Detection Output Also featured is programmable total charge time, an NTC n NTC Thermistor Input for Temperature Qualified thermistor input used to monitor battery temperature Charging while charging and automatic recharging of the battery. n Tiny (6mm 3mm 0.75mm) 22-Pin DFN Package L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath and ThinSOT are trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. Protected by U.S. patents, including 6522118, 6700364. Applic A n Portable USB DevicesGPS Receivers, Cameras, MP3 Players, PDAs t Al Applic A LTC4089 High Voltage Battery Charger Efficiency 0.1F 10H 90 BOOST SW CC CURRENT = 970mA HIGH (6V-36V) HVIN 10F 85 NO OUTPUT LOAD VOLTAGE INPUT 1F LTC4089 HVEN FIGURE 10 SCHEMATIC 80 HVOUT WITH R = 52k PROG 75 5V (NOM) IN HVPR FROM USB LTC4089 4.7F 70 CABLE V BUS 1k TO LDOs 65 R , ETC. 4.7F EGS LTC4089-5 OUT 60 55 TIMER BAT HVIN = 8V 50 HVIN = 12V CLPROG GND PROG 45 HVIN = 24V VOUT (TYP) AVAILABLE INPUT HVIN = 36V 0.1F 2k 100k 40 V +0.3V HV INPUT (LTC4089) BAT 2.5 3 3.5 4.5 + 4 5V HV INPUT (LTC4089-5) BATTERY VOLTAGE (V) Li-Ion BATTERY 5V USB ONLY 4089 TA01b V BAT ONLY BAT 4089 TAO1 40895fd 1 For more information www.linear.com/LTC4089 EFFICIENCY (%) tion ypic tions turesLTC4089/LTC4089-5 Absolute M A Mu M rA p in c F 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 22-LEAD (6mm 3mm) PLASTIC DFN LTC4089E ................................................40C to 85C T = 110C, = 40C/W JMAX JA EXPOSED PAD (PIN 23) IS GND, MUST BE SOLDERED TO PCB Maximum Operating Junction Temperature ...........110C Storage Temperature Range .................. 65C to 125C