ApplicationEquivalent full-range temperature coefficient: 30ppm/°C0.2Ω typical output impedanceSink current capability: 1mA to 100mALow output noiseAdjustable output voltage: VREF to 36VPinoutSpecificationsVKA Cathode voltage (see Note 1)37 V Continuous cathode current range 100 to +150 mARe...
LM431AC: ApplicationEquivalent full-range temperature coefficient: 30ppm/°C0.2Ω typical output impedanceSink current capability: 1mA to 100mALow output noiseAdjustable output voltage: VREF to 36VPinout...
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The LM431AC and TL431A are 3-terminal adjustable shunt regulators with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors (see Figure 4). These devices have a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies.
The LM431AC and TL431AC are characterized for operation from 0°C to +70°C; the TL431I and TL431AI are characterized for operation from 40°C to +85°C.