LTC4013 - 60V Synchronous Buck Multi-Chemistry Battery Charger


  • Wide Input Voltage Range: 4.5V to 60V
  • Wide Battery Voltage Range: 0V to 60V
  • Built-In Charge Algorithms for Lead-Acid and Li-Ion
  • ±0.5% Float Voltage Accuracy
  • ±5% Charge Current Accuracy
  • Maximum Power Point Tracking Input Control
  • NTC Temperature Compensated Float Voltage
  • Two Open Drain Status Pins
  • Thermally Enhanced 28-Lead 4mm × 5mm QFN Package

Typical Application

LTC4013 Typical Application
LTC4013 Typical Application


The LTC4013 is a high voltage battery charger controller that supports float, absorption and equalization lead-acid and constant-current/constant-voltage Li-Ion charging algorithms. It is particularly well suited for charging a wide range of lead-acid batteries, including both vented and sealed type. The LTC4013 also supports Li-Ion/Polymer, LiFePO4, NiMH, NiCd and other battery types.

Charging is performed with a high efficiency synchronous buck (step-down) converter that uses external N-channel MOSFETs. Switching frequency is programmed with a resistor or synchronized with an external clock for use in multiphase applications. Charge current is set with an external sense resistor.

The device includes maximum power point tracking input voltage regulation for limited power inputs such as solar panels. Other features include user-programmable absorption and equalization times, temperature-adjusted regulation voltages and an external NFET isolation diode.


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

Part Number Package Code Temp Package
LTC4013EUFD#PBF 4x5 QFN-28 UFD E 05-08-1712 Yes
LTC4013EUFD#TRPBF 4x5 QFN-28 UFD E 05-08-1712 Yes
LTC4013IUFD#PBF 4x5 QFN-28 UFD I 05-08-1712 Yes
LTC4013IUFD#TRPBF 4x5 QFN-28 UFD I 05-08-1712 Yes

LTC4013 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
LTC4013EUFD#PBF 4x5 QFN-28 E $5.64 $3.95 Yes
LTC4013EUFD#TRPBF 4x5 QFN-28 E $5.70 $4.01 Yes
LTC4013IUFD#PBF 4x5 QFN-28 I $6.55 $4.55 Yes
LTC4013IUFD#TRPBF 4x5 QFN-28 I $6.61 $4.61 Yes
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* 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
DC2374A LTC4013 Demo Board | 60V Sync Buck Multi-Chemistry Battery Charger, 21.5V ≤ VIN ≤ 35V or Adj Down to 5V; VBATT = 12V @ 5A $200.00
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Click here to view our complete list of demo boards


  • Battery Backup for Lighting, UPS Systems, Security Cameras, Computer Control Panels
  • Portable Medical Equipment
  • Solar-Powered Systems
  • Industrial Battery Charging

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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!

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