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DS2712Z+TR Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS2712Z+TR Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 15 page 1 of 15 120808 DESCRIPTION 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. FEATURES 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: 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 Package APPLICATIONS Desktop/Stand-Alone Chargers (AAA/AA) Digital Still Cameras Music Players Games Toys PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 CC1 Cell 1 Charge-Control Output 2 CC2 Cell 2 Charge-Control Output 3 LED1 Cell 1 Status 4 VSS Ground Reference and Chip-Supply Return 5 LED2 Cell 2 Status, Mode-Select Input 6 CSOUT Current-Sense Output 7 VN1 Current-Sense + Input 8 VN0 Current-Sense - Input 9 DMSEL Display-Mode Select 10 CTST Cell Test Threshold Set 11 TMR Charge Timer Set 12 VDD Chip-Supply Input (4.0V to 5.5V) 13 THM1 Cell 1 Thermistor Input 14 THM2 Cell 2 Thermistor Input 15 VP1 Cell 1 Positive-Terminal Sense Input 16 VP2 Cell 2 Positive-Terminal Sense Input DS2711/DS2712 Loose Cell NiMH Chargers www.maxim-ic.com See Table 1 for Ordering Information. 16 SO (150 mil) / TSSOP (4.4 mm) |
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Similar Description - DS2712Z+TR |
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