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DS2715Z+TR Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS2715Z+TR Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 17 page 1 of 17 DESCRIPTION The DS2715 is well suited for cost-sensitive 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 switchmode 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. A user selectable charge timer allows charge rates from 0.167C to 2C. FAST-CHARGE, TOPOFF and 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. FEATURES Charges 1 to 10 NiMH Cells FAST-CHARGE at up to a 2C Rate PRECHARGE and TOPOFF Charge Modes Help Cell Conditioning Load Detection Allows the DS2715 to Enter Low Power Sleep Mode (Less than 10µA) while the Cell Pack is Discharged 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 Small 16-Pin SO Package APPLICATIONS Portable DVD Players Portable Television Sets Handheld Gaming Test Equipment Handheld POS Terminals PIN CONFIGURATION Table 1. ORDERING INFORMATION + Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel. OPERATIONAL DIAGRAM PART MARKING PIN-PACKAGE DS2715Z+ D2715 16 SO DS2715Z+T&R D2715 16 SO DS2715BZ+ D2715B 16 SO DS2715BZ+T&R D2715B 16 SO DS2715 NiMH Battery Pack Charge Controller www.maxim-ic.com See Table 1 for Ordering Information. 16 SO CBIAS VCH VSS LED1 DNC VSS CTG CTG VBATT THM RT VDD SNS- SNS+ DIV MODE Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata. 19-4592; 4/09 |
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