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TL431BIPE4 데이터시트(PDF) 2 Page - Texas Instruments |
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TL431BIPE4 데이터시트(HTML) 2 Page - Texas Instruments |
2 / 56 page TL431, TL431A, TL431B TL432, TL432A, TL432B ADJUSTABLE PRECISION SHUNT REGULATORS SLVS543J − AUGUST 2004 − REVISED DECEMBER 2005 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CATHODE ANODE REF TL431 . . . KTP (PowerFLEX E/TO-252) PACKAGE (TOP VIEW) TL431A, TL431B . . . DCK (SC-70) PACKAGE (TOP VIEW) 1 2 3 6 5 4 CATHODE NC REF ANODE NC NC NC − No internal connection TL431, TL431A, TL431B . . . LP (TO-92/TO-226) 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 Ω. 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 25 °C) 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 0 °C to 70°C, the TL43xxI devices are characterized for operation from −40 °C to 85°C, and the TL43xxQ devices are characterized for operation from −40°C to 125 °C. |
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