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.
Feature
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:
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
Applications
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
