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DV2054S2 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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DV2054S2 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers |
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2 / 5 page  Fixed Configuration The DV2054S2 board has the following characteristics: VCC for the fast-charge IC is regulated onboard from the supply at connector J1. J1 can accept a maximum of 25VDC. LED indicates charge status. Charge begins on the later application of – The battery – Supply voltage The on-board regulator supplies a fast charge current IMAX of 1.25A. The fast-charge voltage VMAX is set at 25°C. The switching frequency of the PWM control loops is 120kHz. The regulated current is controlled by the value of the sense resistor RSNS according to the relationship I V R CHG SNS = 0 250 . The value of RSNS (R17 in the schematic) at shipment is 0.200 Ω. This resistor can be changed depending on the application. The maximum charging current IMAX for the DV2054S2 board is 1.25A. The thermistor provided is a Philips 2322–640–63103. With this thermistor connected between TEM+ and BAT-, the temperature fault limits are VLTF (low-tem- perature fault) = 0°C, VHTF (high-temperature fault) = 45°C, and VTCO (charge cutoff) = 47°C. Jumper-Selectable Configuration The DV2054S2 can be configured as follows (see Jumber Configuration Diagram for location of the jumbers): JP1: Configures the display mode (DSEL). JP2: Configures the board for the number of cells. JP3: Sets the minimum current termination. Setup Procedure 1. Connect the thermistor to TEM+ and BAT-. 2. Attach the battery pack to BAT+ and BAT-. 3. Connect the charging supply to J1. The following table shows the minimum input require- ment for a given number of cells. The combined charging and system load should not ex- ceed the IMAX limit of 1.25A. 2 DV2054S2 JP3 IMIN [12]3 IMAX 10 1[23] IMAX 20 123 IMAX 30 JP2 Number of Cells [12 ]345678 1 12[34]5678 2 1234[56]78 3 123456[78] 4 JP1 Display Mode [12 ]3 Mode 1 1[23] Mode 2 1 2 3 Mode 3 Number of Cells Minimum Charger Supply Input 1 8.5VDC 2 13VDC 3 19VDC 4 25VDC |
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Similar Description - DV2054S2 |
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