I = 500mA VBUS LTC4160/LTC4160-1 Switching Power Manager with USB On-The-Go And Overvoltage Protection FEATURES DESCRIPTION n Bidirectional Switching Regulator Makes Optimal The LTC 4160/LTC4160-1 are high efficiency power man - Use of Limited Power Available from USB Port and agement and Li-Ion/Polymer battery charger ICs. They each also Provides a 5V Output for USB On-The-Go include a bidirectional switching PowerPath controller n Overvoltage Protection Guards Against Damage with automatic load prioritization, a battery charger, and n 180m Internal Ideal Diode Plus Optional External an ideal diode. Ideal Diode Controller Seamlessly Provides Low The LTC4160/LTC4160-1s bidirectional switching regulator Loss PowerPath When Input Power is Limited or transfers nearly all of the power available from the USB Unavailable port to the load with minimal loss and heat which eases n Instant-On Operation with Discharged Battery thermal constraints in small spaces. These devices feature n Full Featured Li-Ion/Polymer Battery Charger a precision input current limit for USB compatibility and n Bat-Track Adaptive Output Control For Efficient Bat-Track output control for efficient charging. In addition, Charging the ICs can also generate 5V at 500mA for USB On-The- n 1.2A Max Input Current Limit Go applications. n 1.2A Max Charge Current with Thermal Limiting n An overvoltage circuit protects the LTC4160/LTC4160-1 Battery Float Voltage: 4.2V (LTC4160), 4.1V from high voltage damage on the USB/wall adapter inputs (LTC4160-1) n with an external N-channel MOSFET and a resistor. Low Battery Powered Quiescent Current (8A) n 20-pin 3mm 4mm 0.75mm QFN Package The LTC4160/LTC4160-1 are available in a 3mm 4mm 0.75mm QFN surface mount package. APPLICATIONS L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks and PowerPath and Bat-Track are a trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including n Media Players and Personal Navigation Devices 6522118, 6404251. Other patents pending. n Digital Cameras, PDAs, Smart Phones TYPICAL APPLICATION USB OTG V Voltage High Efficiency Power Manager/Battery Charger with USB Battery and V Currents BUS BUS vs V Current On-The-Go and Overvoltage Protection vs Load Current BUS 5.5 USB SYSTEM 750 V = BAT = 3.8V OUT ON-THE-GO LOAD 3.3H V CURRENT BUS USB V SW BUS 5.0 500 V = 4.75V LTC4160/ BUS 10F V OUT 10F LTC4160-1 4.5 250 OVGATE BATTERY CURRENT BAT OVSENS (CHARGING) USB 2.0 SPECIFICATIONS + 6.2k Li-Ion 4.0 0 CLPROG PROG REQUIRE THAT HIGH V = 5V BUS POWER DEVICES NOT OPTIONAL BAT = 3.8V OPERATE IN THIS REGION OVERVOLTAGE 5x MODE 3.5 PROTECTION 250 0.1F 3.01k 1k BATTERY CURRENT 41601 TA01a (DISCHARGING) 3.0 500 100 200 500 600 200 600 0 300 400 700 0 400 800 1000 V CURRENT (mA) LOAD CURRENT (mA) BUS 41601 TA01b 41601 TA01c 41601fa 1 V (V) BUS CURRENT (mA)LTC4160/LTC4160-1 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2, 3) TOP VIEW V (Transient) t < 1ms, Duty Cycle < 1% .. 0.3V to 7V BUS V (Static), BAT, V NTC, ENOTG, ID, BUS OUT, ENCHARGER, VBUSGD, FAULT, CHRG......... 0.3V to 6V 20 19 18 17 I , I ........ 0.3V to Max(V , V , BAT) + 0.3V LIM0 ILIM1 BUS OUT OVGATE 1 16 I LIM1 I ...................................................................10mA OVSENS OVSENS 2 15 I LIM0 I ....................................................................3mA CLPROG VBUSGD 3 14 SW 21 GND I , I , I .............................................50mA FAULT 4 13 V CHRG VBUSGD FAULT BUS V I ........................................................................2mA ID 5 12 OUT PROG ENOTG 6 11 BAT I ...................................................................30mA LDO3V3 7 8 9 10 I , I , I , I ..................................................2A SW BAT VOUT VBUS Operating Temperature Range..................40C to 85C Maximum Junction Temperature........................... 125C Storage Temperature Range ...................65C to 125C UDC PACKAGE 20-LEAD (3mm 4mm) PLASTIC QFN T = 125C, = 43C/W JMAX JA EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4160EUDC PBF LTC4160EUDC TRPBF LFXY 20-Lead (3mm 4mm) Plastic QFN 40C to 85C LTC4160EUDC-1 PBF LTC4160EUDC-1 TRPBF LFXZ 20-Lead (3mm 4mm) Plastic QFN 40C to 85C LTC4160EPDC PBF LTC4160EPDC TRPBF FDRT 20-Lead (3mm 4mm) Plastic UTQFN 40C to 85C (OBSOLETE) LTC4160EPDC-1 PBF LTC4160EPDC-1 TRPBF FDST 20-Lead (3mm 4mm) Plastic UTQFN 40C to 85C (OBSOLETE) Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: