TL431, TL431A, TL431B TL432, TL432A, TL432B www.ti.com SLVS543M AUGUST 2004REVISED JULY 2012 PRECISION PROGRAMMABLE REFERENCE Check for Samples: TL431, TL431A, TL431B, TL432, TL432A, TL432B 1FEATURES Operation From 40C to 125C Typical Temperature Drift (TL431B) Reference Voltage Tolerance at 25C 6 mV (C Temp) 0.5% . B Grade 14 mV (I Temp, Q Temp) 1% . A Grade Low Output Noise 2% . Standard Grade 0.2- Typical Output Impedance Sink-Current Capability . 1 mA to 100 mA Adjustable Output Voltage . Vref to 36 V TL431, TL431A, TL431B . D (SOIC) PACKAGE TL431, TL431A, TL431B . P (PDIP), PS (SOP), (TOP VIEW) OR PW (TSSOP) PACKAGE (TOP VIEW) CATHODE 1 8 REF CATHODE 1 8 REF ANODE 2 7 ANODE NC 2 7 NC ANODE 3 6 ANODE NC 3 6 ANODE 4 5 NC NC NC 4 5 NC NC No internal connection NC No internal connection TL431, TL431A, TL431B . PK (SOT-89) PACKAGE TL432, TL432A, TL432B . PK (SOT-89) PACKAGE (TOP VIEW) (TOP VIEW) CATHODE REF ANODE ANODE REF CATHODE TL432, TL432A, TL432B . DBV (SOT-23-5) PACKAGE TL431, TL431A, TL431B . DBV (SOT-23-5) PACKAGE (TOP VIEW) (TOP VIEW) 1 NC 5 REF 1 NC 5 ANODE 2 ANODE 2 4 CATHODE 3 NC 4 REF 3 CATHODE NC No internal connection NC No internal connection Pin 2 is attached to Substrate and must be connected to ANODE or left open. TL432, TL432A, TL432B . DBZ (SOT-23-3) PACKAGE TL431, TL431A, TL431B . DBZ (SOT-23-3) PACKAGE (TOP VIEW) (TOP VIEW) 1 1 CATHODE REF 3 ANODE 3 ANODE 2 2 REF CATHODE 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright 20042012, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. ANODE ANODETL431, TL431A, TL431B TL432, TL432A, TL432B SLVS543M AUGUST 2004REVISED JULY 2012 www.ti.com TL431, TL431A, TL431B . LP (TO-92/TO-226) PACKAGE TL431A, TL431B . DCK (SC-70) PACKAGE (TOP VIEW) (TOP VIEW) CATHODE 1 6 CATHODE ANODE 2 5 NC NC ANODE 3 4 REF NC REF NC No internal connection TL431 . KTP (PowerFLEX /TO-252) PACKAGE (TOP VIEW) CATHODE ANODE REF DESCRIPTION/ORDERING INFORMATION The TL431 and TL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). These devices have a typical output impedance of 0.2 . Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL432 has exactly the same functionality and electrical specifications as the TL431, but has different pinouts for the DBV, DBZ, and PK packages. Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25C) of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift vs temperature ensures good stability over the entire temperature range. The TL43xxC devices are characterized for operation from 0C to 70C, the TL43xxI devices are characterized for operation from 40C to 85C, and the TL43xxQ devices are characterized for operation from 40C to 125C. 2 Submit Documentation Feedback Copyright 20042012, Texas Instruments Incorporated Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B ANODE