DS2712 - Maxim Integrated Products

DS2712 (DS2711 / DS2712) Loose Cell NiMH Chargers

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.

Features

 Charge 1 or 2 NiMH Cells
 Detect and Avoid Charging Alkaline Cells
 Precharge Deeply Depleted Cells
 Fast Charge NiMH with -∆V 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 Packages DS2711/DS2712 Loose-Cell NiMH Chargers PIN CONFIGURATION CC1 CC2 LED1 VSS LED2 CSOUT .