DS2715

www.DataSheet4U.com DS2715 NiMH Battery Pack Charge Controller www.maxim-ic.com DESCRIPTION The DS2715 is well suited for cost-sensitive charger applications where the battery is either internal or in a unique battery pack. It has been optimized for safe reliable charging of 1 to10 NiMH cells in series. The DS2715 has an internal gain block that can be selected as either a comparator or transconductance amplifier for charge current regulation. The DS2715 is configurable as a switched DC charger, a linear current regulator, or a switchmode current source. The DS2715 pre-conditions severely depleted cells are pre-conditioned before entering full charge mode. The DS2715 terminates full charge using the dT/dt technique. It requires an external thermistor for dT/dt detection. Over-temperature, under-temperature, and over-voltage detection prevents charging under unsafe environmental conditions. A user selectable charge timer allows charge rates from 0.15C to 2C. Fast-charge, top-off and charge done modes are included for highly reliable, safe charging of NiMH cells. Discharge mode allows the DS2715 to enter a low power sleep state while the cell pack is being discharged. PIN CONFIGURATION CBIAS CC1 VCH CC2 VSS LED1 LED1 VSS LED2 LED2 VSS CSOUT CTG VN1 CTG VN0 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V BATT VP2 THM VP1 R T THM2 V DD THM1 SNSVDD SNS+ TMR DIV CTST MODE DMSEL 16 SO See Table 1 for Ordering Information. Table 1. ORDERING INFORMATION PART DS2715Z+ DS2715Z+T&R MARKIN...