DS2712

PRODUCTION

Loose-Cell NiMH Chargers

NiMH Battery Charger Detects and Avoids Charging Alkaline Cells

Data Sheet (Rev. 4) Product Selection Table
Viewing:

Overview

  • Charge 1 or 2 NiMH Cells
  • Detect and Avoid Charging Alkaline Cells
  • Precharge Deeply Depleted Cells
  • Fast Charge NiMH with -ΔV Termination Sensitivity of 2mV (typ)
  • Monitor Voltage, Temperature, and Time for Safety and Secondary Termination
  • Regulate Charge Current:
    • Linear Control (DS2711)
    • Switch-Mode Control (DS2712)
  • Drive PMOS or PNP-Type Pass Element or Switch, or an Optocoupler
  • Compatible with Popular Optocouplers and Integrated Primary Side PWM Controllers
  • Small 16-Pin SO or TSSOP Package

The DS2711 and DS2712 are ideal for in-system or stand-alone charging of 1 or 2 AA or AAA NiMH "loose" cells. Temperature, voltage, and charge time are monitored to provide proper fast charging control algorithms for nickel metal hydride (NiMH) batteries. Battery tests are included to detect defective or inappropriate cells such as alkaline primary batteries. The DS2711/DS2712 support series and parallel topologies, with independent monitoring and control of each cell. Charging of NiCd chemistry cells is also supported.

Applications

  • Desktop/Stand-Alone Chargers (AAA/AA)
  • Digital Still Cameras
  • Gaming
  • Music Players
  • Toys
DS2712
Loose-Cell NiMH Chargers
DS2711, DS2712: Block Diagram
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 2

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Evaluation Kits

DS2712K

Evaluation Kit for the DS2711 and DS2712

Buy Now View Details

Features and Benefits

  • Charge Up to 2 Cells in Series or Parallel
  • Charges AA or AAA Cells
  • Offers Linear or Switch Mode Current Regulation
  • Current Regulation Feature Can Be Bypassed When Used with External Current Regulated Supply
  • Monitors Temperature, Voltage, and Charge Time
  • Resistor-Programmable Alkaline Cell Rejection Threshold
  • Resistor-Programmable Charge Time Monitor

Product Details

The DS2711/DS2712 EV kit board allow users to explore all the features of the DS2711 and DS2712. It is designed to allow a DS2711 or DS2712 to be configured into any possible charge configuration. The board supports single-cell, dual-cell series, and dual-cell parallel charging of AA or AAA NiMH cells. The board also allows the user to select between on-board regulation of the charge source, on-board regulation with a separate power supply, or external regulation. Temperature, voltage, and charge time are monitored to ensure safe charging. The EV kit also detects and rejects alkaline cells.

Applications

  • Desktop/Stand-Alone Chargers (AAA/AA)
  • Digital Still Cameras
  • Gaming
  • Music Players
  • Toys

DS2711K

Evaluation Kit for the DS2711 and DS2712

Buy Now View Details

Features and Benefits

  • Charge Up to 2 Cells in Series or Parallel
  • Charges AA or AAA Cells
  • Offers Linear or Switch Mode Current Regulation
  • Current Regulation Feature Can Be Bypassed When Used with External Current Regulated Supply
  • Monitors Temperature, Voltage, and Charge Time
  • Resistor-Programmable Alkaline Cell Rejection Threshold
  • Resistor-Programmable Charge Time Monitor

Product Details

The DS2711/DS2712 EV kit board allow users to explore all the features of the DS2711 and DS2712. It is designed to allow a DS2711 or DS2712 to be configured into any possible charge configuration. The board supports single-cell, dual-cell series, and dual-cell parallel charging of AA or AAA NiMH cells. The board also allows the user to select between on-board regulation of the charge source, on-board regulation with a separate power supply, or external regulation. Temperature, voltage, and charge time are monitored to ensure safe charging. The EV kit also detects and rejects alkaline cells.

Applications

  • Desktop/Stand-Alone Chargers (AAA/AA)
  • Digital Still Cameras
  • Gaming
  • Music Players
  • Toys
DS2712K
Evaluation Kit for the DS2711 and DS2712
DS2711K
Evaluation Kit for the DS2711 and DS2712

Latest Discussions

No discussions on DS2712 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed