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AP431IARA Datasheet(PDF) 9 Page - Anachip Corp |
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AP431IARA Datasheet(HTML) 9 Page - Anachip Corp |
9 / 17 page Adjustable Precision Shunt Regulator AP431/AP431A Anachip Corp. www.anachip.com.tw Rev.1.0 May.7, 2004 9/17 Application Examples VIN + Low Limit VREF(1 + R1B/R2B) +VBE High Limit VREF(1 + R1A/R2A) R1A R1B R2A R2B VBE Output ON when Low Limint < VIN<High Limit Fig.10 Over-Voltage / Under-Voltage Protection Circuit VIN RCL IOUT IOUT = VREF / RCL Fig.6 Current Limiter or Current Source IOUT VIN IOUT = VREF / RS RS Fig.7 Constant-Current Sink Fig.4 Voltage Monitor Fig.5 Delay Timer VOUT = (1 + R1/R2) x VREF VIN R1 R2 Fig.8 Higher-Current Shunt Regulator VOUT VIN PUSE R1 R2 LIMIT (1 + R1/R2) x VREF Fig.9 Crow Bar VOUT VIN ON OFF R + V IN Delay = RC x ln( V IN -VREF ) LED on when Low Limit<VIN<High Limit Low Limit ≈ VREF (1+R1B/R2B) High Limit ≈ VREF (1+R1A/R2A) R1A R2A VIN R1B R2B |
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