LTM8061 - 32V, 2A μModule Li-Ion/ Polymer Battery Charger

Features

  • Wide Input Voltage Range: 4.95V to 32V (40V Absolute Maximum)
  • Float Voltage Options:
    1-Cell: 4.1V, 4.2V
    2-Cell: 8.2V, 8.4V
  • Programmable Charge Current: Up to 2A
  • User-Selectable Charge Termination: C/10 or Onboard Termination Timer
  • Dynamic Charge Rate Programming/Soft-Start Pin
  • Programmable Input Current Limit
  • Optional Reverse Input Protection
  • NTC Resistor Temperature Monitor
  • 0.5% Float Voltage Accuracy
  • Bad-Battery Detection with Auto-Reset
  • Tiny, Low Profile (9mm × 15mm × 4.32mm) Surface Mount LGA Package

Typical Application

LTM8061 Typical Application
LTM8061 Typical Application

Description

The LTM®8061 is a high efficiency 32V, 2A μModule® standalone Li-Ion battery charger. It is optimized for one and two-cell packs, with fixed float voltage options: 4.1V, 4.2V, 8.2V and 8.4V. The LTM8061 provides a constant-current/constant-voltage charge characteristic, with maximum charge current up to 2A. A precondition feature trickle charges a depleted battery, and bad battery detection provides a signal and suspends charging if a battery does not respond to preconditioning.

The LTM8061 can be configured to terminate charging when charge current falls to one-tenth the programmed maximum current or to use an internal timer if a timebased termination scheme is desired. Once charging is terminated, the LTM8061 enters a low current standby mode. An auto-restart feature starts a new charge cycle if the battery voltage drops 2.5% from the float voltage, or if a new battery is inserted into a charging system.

The LTM8061 is packaged in a thermally enhanced, compact (9mm × 15mm × 4.32mm) over-molded land grid array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8061 is RoHS compliant.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprint compatible with Mentor Graphics PADS® v9.5 or later, and Cadence ORCAD® v16.5 or later.

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

9mm x 15mm x 4.32mm LGA

LTM8061 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTM8061EV-4.1#PBF LGA 77 E $12.64 $8.85 View
LTM8061EV-4.2#PBF LGA 77 E $12.64 $8.85 View
LTM8061EV-8.2#PBF LGA 77 E $12.64 $8.85 View
LTM8061EV-8.4#PBF LGA 77 E $12.64 $8.85 View
LTM8061IV-4.1#PBF LGA 77 I $13.91 $9.74 View
LTM8061IV-4.2#PBF LGA 77 I $13.91 $9.74 View
LTM8061IV-8.2#PBF LGA 77 I $13.91 $9.74 View
LTM8061IV-8.4#PBF LGA 77 I $13.91 $9.74 View
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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
DC1645A-A LTM8061-4.1 Demo Board | 32v, 2A uModule Battery Charger. $65.00
DC1645A-B LTM8061-4.2 Demo Board | 32v, 2A uModule Battery Charger. $65.00
DC1645A-C LTM8061-8.2 Demo Board | 32v, 2A uModule Battery Charger. $65.00
DC1645A-D LTM8061-8.4 Demo Board | 32v, 2A uModule Battery Charger. $65.00
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Click here to view our complete list of demo boards

Applications

  • Industrial Handheld Instruments
  • 12V to 24V Automotive and Heavy Equipment
  • Professional Video/Camera Chargers
 

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Design Tools

LTspiceIV

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice IV

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice IV does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As". After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LTM8061-4.1
LTM8061-4.2
LTM8061-8.2
LTM8061-8.4

Technical Support