SLVS139A - JULY 1996 - REVISED APRIL 1998
The TLV431 and TLV431A are low-voltage 3-terminal adjustable voltage references with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between Vref (1.24V) and 6 V with two external resistors (see Figure 2). The TLV431 and TLV431A operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431 and TLV431A are ideal voltage references in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLV431 and TLV431A excellent replacements for low-voltage zener diodes in many applications, including on-board regulation and adjustable power supplies.
The TLV431C and TLV431AC devices are characterized for operation from 0°C to 70°C.
The TLV431I and TLV431AI devices are characterized for operation from -40°C to 85°C.
The LP package is available taped and reeled. Add R suffix to device type (e.g., TLV431ACLPR). The DBV is only available taped and reeled.
View more information about generic part numbers:TLV431, TLV431A
Go to the Engineering Design Center to locate information on other TI Semiconductor devices.