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LTC4160-1 Dataheets PDF



Part Number LTC4160-1
Manufacturers Linear Technology
Logo Linear Technology
Description Switching Power Manager
Datasheet LTC4160-1 DatasheetLTC4160-1 Datasheet (PDF)

FEATURES n Bidirectional Switching Regulator Makes Optimal Use of Limited Power Available from USB Port and also Provides a 5V Output for USB On-The-Go n Overvoltage Protection Guards Against Damage n 180mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Seamlessly Provides Low Loss PowerPath When Input Power is Limited or Unavailable n Instant-On Operation with Discharged Battery n Full Featured Li-Ion/Polymer Battery Charger n Bat-Track™ Adaptive Output Control For Efficient.

  LTC4160-1   LTC4160-1


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FEATURES n Bidirectional Switching Regulator Makes Optimal Use of Limited Power Available from USB Port and also Provides a 5V Output for USB On-The-Go n Overvoltage Protection Guards Against Damage n 180mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Seamlessly Provides Low Loss PowerPath When Input Power is Limited or Unavailable n Instant-On Operation with Discharged Battery n Full Featured Li-Ion/Polymer Battery Charger n Bat-Track™ Adaptive Output Control For Efficient Charging n 1.2A Max Input Current Limit n 1.2A Max Charge Current with Thermal Limiting n Battery Float Voltage: 4.2V (LTC4160), 4.1V (LTC4160-1) n Low Battery Powered Quiescent Current (8µA) n 20-pin 3mm × 4mm × 0.75mm QFN Package APPLICATIONS n Media Players and Personal Navigation Devices n Digital Cameras, PDAs, Smart Phones LTC4160/LTC4160-1 Switching Power Manager with USB On-The-Go And Overvoltage Protection DESCRIPTION The LTC®4160/LTC4160-1 are high efficiency power management and Li-Ion/Polymer battery charger ICs. They each include a bidirectional switching PowerPath™ controller with automatic load prioritization, a battery charger, and an ideal diode. The LTC4160/LTC4160-1’s bidirectional switching regulator transfers nearly all of the power available from the USB port to the load with minimal loss and heat which eases thermal constraints in small spaces. These devices feature a precision input current limit for USB compatibility and Bat-Track output control for efficient charging. In addition, the ICs can also generate 5V at 500mA for USB On-TheGo applications. An overvoltage circuit protects the LTC4160/LTC4160-1 from high voltage damage on the USB/wall adapter inputs with an external N-channel MOSFET and a resistor. The LTC4160/LTC4160-1 are available in a 3mm × 4mm × 0.75mm QFN surface mount package. 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 6522118, 6404251. Other patents pending. VBUS (V) CURRENT (mA) TYPICAL APPLICATION USB OTG VBUS Voltage vs VBUS Current 5.5 VOUT = BAT = 3.8V 5.0 VBUS = 4.75V 4.5 USB 2.0 SPECIFICATIONS 4.0 REQUIRE THAT HIGH POWER DEVICES NOT OPERATE IN THIS REGION 3.5 IVBUS = 500mA 3.0 0 100 200 300 400 500 600 700 VBUS CURRENT (mA) 41601 TA01b High Efficiency Power Manager/Battery Charger with USB On-The-Go and Overvoltage Protection USB ON-THE-GO USB 10µF 6.2k OPTIONAL OVERVOLTAGE PROTECTION VBUS SW LTC4160/ LTC4160-1 VOUT OVGATE OVSENS BAT CLPROG PROG 0.1µF 3.01k 1k 3.3µH SYSTEM LOAD 10µF + Li-Ion 41601 TA01a Battery and VBUS Currents vs Load Current 750 500 VBUS CURRENT 250 BATTERY CURRENT (CHARGING) 0 –250 VBUS = 5V BAT = 3.8V 5x MODE –500 0 BATTERY CURRENT (DISCHARGING) 200 400 600 800 1000 LOAD CURRENT (mA) 41601 TA01c 41601fa 1 LTC4160/LTC4160-1 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2, 3) VBUS (Transient) t < 1ms, Duty Cycle < 1%... –0.3V to 7V VBUS (Static), BAT, VOUT, NTC, ENOTG, ID, ENCHARGER, VBUSGD, FAULT, CHRG......... –0.3V to 6V ILIM0, IILIM1......... –0.3V to Max(VBUS, VOUT, BAT) + 0.3V IOVSENS....................................................................10mA ICLPROG.....................................................................3mA ICHRG, IVBUSGD, IFAULT.............................................50mA IPROG.........................................................................2mA ILDO3V3....................................................................30mA ISW, IBAT, IVOUT, IVBUS...................................................2A Operating Temperature Range.................. –40°C to 85°C Maximum Junction Temperature........................... 125°C Storage Temperature Range.................... –65°C to 125°C PIN CONFIGURATION TOP VIEW NTC NTCBIAS LDO3V3 CLPROG OVGATE 1 OVSENS 2 VBUSGD 3 FAULT 4 ID 5 ENOTG 6 20 19 18 17 16 ILIM1 15 ILIM0 21 14 SW GND 13 VBUS 12 VOUT 11 BAT 7 8 9 10 ENCHARGER PROG CHRG IDGATE UDC PACKAGE 20-LEAD (3mm × 4mm) PLASTIC QFN TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION LTC4160EUDC#PBF LTC4160EUDC#TRPBF LFXY 20-Lead (3mm × 4mm) Plastic QFN LTC4160EUDC-1#PBF LTC4160EUDC-1#TRPBF LFXZ 20-Lead (3mm × 4mm) Plastic QFN LTC4160EPDC#PBF LTC4160EPDC#TRPBF FDRT 20-Lead (3mm × 4mm) Plastic UTQFN LTC4160EPDC-1#PBF LTC4160EPDC-1#TRPBF FDST 20-Lead (3mm × 4mm) Plastic UTQFN 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: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: .


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