DS2712

PRODUCTION

Loose-Cell NiMH Chargers

NiMH Battery Charger Detects and Avoids Charging Alkaline Cells

Data Sheet (Rev. 4) Product Selection Table
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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
DS2712
Loose-Cell NiMH Chargers
DS2711, DS2712: Block Diagram
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Documentation

Data Sheet 1

Design Note 2

Technical Articles 2

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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

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