LTC4160 - Switching Power Manager with USB On-The-Go And Overvoltage Protection


  • Bidirectional Switching Regulator Makes Optimal Use of Limited Power Available from USB Port and also Provides a 5V Output for USB On-The-Go
  • Overvoltage Protection Guards Against Damage
  • 180mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Seamlessly Provides Low Loss PowerPath When Input Power is Limited or Unavailable
  • Instant-On Operation with Discharged Battery
  • Full Featured Li-Ion/Polymer Battery Charger
  • Bat-Track™ Adaptive Output Control For Efficient Charging
  • 1.2A Max Input Current Limit
  • 1.2A Max Charge Current with Thermal Limiting
  • Battery Float Voltage: 4.2V (LTC4160), 4.1V (LTC4160-1)
  • Low Battery Powered Quiescent Current (8μA)
  • 20-pin 3mm × 4mm × 0.75mm QFN Package

Typical Application

LTC4160 Typical Application
LTC4160 Typical Application
LTC4160 Typical Application


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-The- Go 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.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC4160EUDC-1#PBF 3x4 QFN-20 UDC E 05-08-1742 Yes
LTC4160EUDC-1#TRPBF 3x4 QFN-20 UDC E 05-08-1742 Yes
LTC4160EUDC#PBF 3x4 QFN-20 UDC E 05-08-1742 Yes
LTC4160EUDC#TRPBF 3x4 QFN-20 UDC E 05-08-1742 Yes

LTC4160 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC4160EUDC-1#PBF 3x4 QFN-20 E $4.07 $2.85 Yes
LTC4160EUDC-1#TRPBF 3x4 QFN-20 E $2.91 Yes
LTC4160EUDC#PBF 3x4 QFN-20 E $4.07 $2.85 Yes
LTC4160EUDC#TRPBF 3x4 QFN-20 E $2.91 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1463A-A LTC4160EPDC Demo Board | Switching Power Manager with USB On-the-Go and Overvoltage Protection $125.00
DC1463A-B LTC4160EPDC-1 Demo Board | Switching Power Manager with USB On-the-Go and Overvoltage Protection $125.00
Buy Now
Click here to view our complete list of demo boards


  • Media Players and Personal Navigation Devices
  • Digital Cameras, PDAs, Smart Phones

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email with questions and comments.

Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support