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LT1637CS8 Datasheet(PDF) 10 Page - Linear Technology |
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LT1637CS8 Datasheet(HTML) 10 Page - Linear Technology |
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10 / 12 page ![]() 10 LT1637 SCHE ATIC SI PLIFIED 7 V + 4 V – 6 OUT 8 1 NULL NULL 1637 SS 3 5 +IN –IN Q25 Q24 Q26 Q18 Q17 R6 7k R8 400 Ω R5 7k R3 1.3k R4 1.3k SHDN R7 400 Ω Q16 Q15 Q10 Q11 Q9 Q8 Q14 Q2 D5 Q13 Q1 10 µA Q20 Q23 D3 Q7 D1 D2 D4 Q6 Q4 Q5 2 R2 6k R1 1M Q3 Q19 Q21 Q22 Q12 TYPICAL APPLICATIO S – + LT1637 5V V + 200 Ω 200 Ω 0.2 Ω 2k 0V TO 4.3V 1637 TA02 VOUT = (2Ω)(ILOAD) Q1 2N3904 LOAD ILOAD – + LT1637 1637 TA03 VIN 0.22 µF CL ≤ 4700pF 150 Ω Positive Supply Rail Current Sense Optional Output Compensation for Capacitive Loads Greater Than 200pF – + LT1637 IN1 (0V TO 44V) IN2 (0V TO 44V) 2N5087 2N5210 1637 TA04 1M VOUT 1M VCC 100 1M 10k HYSTERESIS = 10k 1M 3V TO 44V – + LT1637 0.1V TO 44V 5V R1 200 Ω RS 0.2 Ω R2 2k VOUT (0V TO 4.3V) Q1 2N3904 1637 TA06 LOAD ILOAD VOUT (RS)(R2/R1) ILOAD = Over-The-Top Comparator with Hysteresis Lamp Outage Detector Over-The-Top Current Sense – + LT1637 5k 1M 5V TO 44V 3V 100k 0.5 Ω LAMP ON/OFF OUT 1637 TA05 OUT = 0V FOR GOOD BULB 3V FOR OPEN BULB |
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