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LM431BCM3X Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM431BCM3X Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 13 page Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range −65˚C to +150˚C Operating Temperature Range Industrial (LM431xI) −40˚C to +85˚C Commercial (LM431xC) 0˚C to +70˚C Soldering Information Infrared or Convection (20 sec.) 235˚C Wave Soldering (10 sec.) 260˚C (lead temp.) Cathode Voltage 37V Continuous Cathode Current −10 mA to +150 mA Reference Voltage −0.5V Reference Input Current 10 mA Internal Power Dissipation (Notes 3, 4) TO-92 Package SO-8 Package SOT-23 Package 0.78W 0.81W 0.28W micro SMD Package 0.30W Operating Conditions Min Max Cathode Voltage V REF 37V Cathode Current 1.0 mA 100 mA LM431 Electrical Characteristics T A = 25˚C unless otherwise specified Symbol Parameter Conditions Min Typ Max Units V REF Reference Voltage V Z =VREF,II = 10 mA 2.440 2.495 2.550 V LM431A (Figure 1 ) V Z =VREF,II = 10 mA 2.470 2.495 2.520 V LM431B (Figure 1 ) V Z =VREF,II = 10 mA 2.485 2.500 2.510 V LM431C (Figure 1 ) V DEV Deviation of Reference Input Voltage Over V Z =VREF,II = 10 mA, 8.0 17 mV Temperature (Note 5) T A = Full Range (Figure 1 ) Ratio of the Change in Reference Voltage I Z =10mA V Z from VREF to 10V −1.4 −2.7 mV/V to the Change in Cathode Voltage (Figure 2 )V Z from 10V to 36V −1.0 −2.0 I REF Reference Input Current R 1 =10k Ω,R 2 = ∞, 2.0 4.0 µA I I =10mA (Figure 2 ) ∝I REF Deviation of Reference Input Current over R 1 =10k Ω,R 2 = ∞, Temperature I I = 10 mA, 0.4 1.2 µA T A = Full Range (Figure 2 ) I Z(MIN) Minimum Cathode Current for Regulation V Z =VREF (Figure 1 ) 0.4 1.0 mA I Z(OFF) Off-State Current V Z = 36V, VREF =0V (Figure *NO TARGET FOR fi* ) 0.3 1.0 µA r Z Dynamic Output Impedance (Note 6) V Z =VREF, LM431A, 0.75 Ω Frequency=0Hz (Figure 1 ) V Z =VREF, LM431B, LM431C 0.50 Ω Frequency=0Hz (Figure 1 ) Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 3: TJ Max = 150˚C. Note 4: Ratings apply to ambient temperature at 25˚C. Above this temperature, derate the TO-92 at 6.2 mW/˚C, the SO-8 at 6.5 mW/˚C, the SOT-23 at 2.2 mW/˚C and the micro SMD at 3mW/˚C. Note 5: Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference input voltage over the full temperature range. www.national.com 4 |
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