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TPIC6A259DW Datasheet(PDF) 7 Page - Texas Instruments |
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TPIC6A259DW Datasheet(HTML) 7 Page - Texas Instruments |
7 / 13 page TPIC6A259 POWER LOGIC 8BIT ADDRESSABLE LATCH SLIS004B − APRIL 1993 − REVISED SEPTEMBER 1995 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 PARAMETER MEASUREMENT INFORMATION OUTPUT CURRENT vs TIME FOR INCREASING LOAD RESISTANCE Region 1 Region 2 t1 t2 First output current pulses after turn-on in chopping mode with resistive load. 0 0.75 1.5 0 t1 ≈ 40 µs t2 ≈ 2.5 ms Time Time IOK (see Notes A and B) REGION 1 CURRENT WAVEFORM IOK t2 t1 t1 1.25 1 0.5 0.25 NOTES: A. Figure 3 illustrates the output current characteristics of the device energizing a load having initially low, increasing resistance, e.g., an incandescent lamp. In region 1, chopping occurs and the peak current is limited to IOK. In region 2, output current is continuous. The same characteristics occur in reverse order when the device energizes a load having an initially high, decreasing resistance. B. Region 1 duty cycle is approximately 2%. Figure 3. Chopping-Mode Characteristics 0.9 0.6 0.3 0 − 50 − 25 0 25 50 75 1.2 OUTPUT CURRENT LIMIT vs CASE TEMPERATURE 100 TC − Case Temperature − °C 1.5 125 150 VCC = 5.5 V VCC = 4.5 V Figure 4 |
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