LT3650-8.X
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LT3650-8.X

High Voltage 2 Amp Monolithic 2-Cell Li-Ion Battery Charger

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LTspice LT3650-8.4 Demo Circuit - Two-Cell Li-Ion 2A Charger (12-32V to 8.4V @ 2A) Download 3.00KB LTspice LT3650-8.2 - Battery Charger IC Download 1.57 KB
Part Models 16
1ku List Price Starting From $3.37
Features
  • Wide Input Voltage Range: 9V to 32V (40V Absolute Maximum)
  • Programmable Charge Current: Up to 2A
  • User-Selectable Termination: C/10 or Onboard Termination Timer
  • Dynamic Charge Rate Programming/Soft-Start Pin
  • Programmable Input Current Limit
  • 1MHz Fixed Frequency
  • Average Current Mode Control
  • 0.5% Float Voltage Accuracy
  • 5% Charge Current Accuracy
  • 2.5% C/10 Detection Accuracy
  • NTC Resistor Temperature Monitor
  • Auto-Recharge at 97.5% Float Voltage
  • Auto-Precondition at <70% Float Voltage
  • Bad Battery Detection with Auto-Reset
  • Binary Coded Open-Collector Status Pins
  • 3mm × 3mm DFN-12 or MSOP-12 Package
Additional Details
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The LT3650 is a complete monolithic 2-cell Li-Ion/Polymer battery charger that operates over a 9V to 32V input voltage range (11.5V minimum start-up voltage). The LT3650 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A, set using an external current sense resistor. A precondition feature trickle-charges a low voltage battery, and bad-battery detection provides a signal and suspends charging if a battery does not respond to preconditioning.

The LT3650 can be configured to terminate charging when charge current falls to C/10, or one-tenth the programmed maximum current. Once charging is terminated, the LT3650 enters a low current (85μA) standby mode. An auto-restart feature starts a new charging cycle if the battery voltage drops 2.5% from the float voltage, or if a new battery is inserted into a charging system.

The LT3650 contains a user-programmable internal safety timer (typically set to a three hour full cycle time). The IC can be configured to use this internal timer if a time-based termination scheme is desired in which charging can continue below C/10 until a desired time is reached.

The LT3650 is available in a low profile (0.75mm) 3mm × 3mm 12-pin DFN and 12-pin MSOP packages.


 Float Voltage
LT3650-4.1 4.1V
LT3650-4.2 4.2V
LT3650-8.2 8.2V
LT3650-8.4 8.4V

Applications

  • Industrial Handheld Instruments
  • 12V to 24V Automotive and Heavy Equipment
  • Desktop Cradle Chargers
  • Notebook Computers
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Documentation View All Documentation
LTspice LT3650-8.4 Demo Circuit - Two-Cell Li-Ion 2A Charger (12-32V to 8.4V @ 2A) Download 3.00KB LTspice LT3650-8.2 - Battery Charger IC Download 1.57 KB
Part Models 16
1ku List Price Starting From $3.37
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LT3650-8.X

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UPDATED 12/19/2012
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LT3650-8.2: High Voltage 2 Amp Monolithic 2-Cell Li-Ion Battery Charger Data Sheet

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UPDATED 03/05/2013
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LT3650-8.2: 高電圧2Aモノリシック2セル・リチウムイオンバッテリ・チャージャ データシート

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Documentation

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT3650EDD-8.2#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650EDD-8.2#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650EDD-8.4#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650EDD-8.4#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650EMSE-8.2#PBF 12-Lead MSOP w/ EP external-link
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LT3650EMSE-8.2#TRPBF 12-Lead MSOP w/ EP external-link
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LT3650EMSE-8.4#PBF 12-Lead MSOP w/ EP external-link
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LT3650EMSE-8.4#TRPBF 12-Lead MSOP w/ EP external-link
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LT3650IDD-8.2#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650IDD-8.2#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650IDD-8.4#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650IDD-8.4#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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LT3650IMSE-8.2#PBF 12-Lead MSOP w/ EP external-link
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LT3650IMSE-8.2#TRPBF 12-Lead MSOP w/ EP external-link
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LT3650IMSE-8.4#PBF 12-Lead MSOP w/ EP external-link
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LT3650IMSE-8.4#TRPBF 12-Lead MSOP w/ EP external-link
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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LT3650EMSE-8.2#PBF

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LT3650EMSE-8.4#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 2

reference details image

DC1473A-A

LT3650EDD-8.4 Demo Board | High Voltage 2 Amp Monolithic 2-Cell Li-Ion Battery Charger

reference details image

DC1473A-B

LT3650EDD-8.2 Demo Board | High Voltage 2 Amp Monolithic Li-Ion Battery Charger

Evaluation Kits2

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DC1473A-A

LT3650EDD-8.4 Demo Board | High Voltage 2 Amp Monolithic 2-Cell Li-Ion Battery Charger
evaluation kit item images

DC1473A-B

LT3650EDD-8.2 Demo Board | High Voltage 2 Amp Monolithic Li-Ion Battery Charger
Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, 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.

spice tool Lt Spice

LT3650-8.4 Demo Circuit - Two-Cell Li-Ion 2A Charger (12-32V to 8.4V @ 2A) Download

3.00K

spice tool Lt Spice

LT3650-8.2 - Battery Charger IC Download

1.57 K

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