DS2715Z+

The DS2715Z+ is a NiMH battery pack Charge Controller features load detection allows the DS2715 to enter low power sleep mode (less than 10µA) while the cell pack is discharged. The DS2715 is well suited for charger applications where the battery pack is either internal or external to the application. It has been optimized for safe and reliable charging of 1 to 10 NiMH cells in series. The internal gain block can be selected as either a comparator or transconductance amplifier for charge current regulation. This makes the DS2715 configurable as a switched DC charger, a linear current regulator or a switch-mode current source. The DS2715 pre-conditions severely depleted cells before entering full charge mode. It terminates full charge using the dT/dt technique, which requires an external sensing thermistor. Over-temperature, under-temperature and over voltage detection prevents charging under unsafe conditions.

• Charges 1 to 10 NiMH cells
• Fast-charge up to a 2°C rate
• PRECHARGE and TOPOFF charge modes help cell conditioning
• dT/dt charge termination eliminates cell charge stress
• Monitors voltage, temperature and time for safety and secondary termination
• Regulates current through either linear control or switch-mode control
• LED output displays charge state

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Consumer Electronics, Test & Measurement

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