器件名称: TL431A
功能描述: ADJUSTABLE PRECISION SHUNT REGULATORS
文件大小: 278.63KB 共19页
简 介:TL431, TL431A ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS005J – JULY 1978 – REVISED JULY 1999
D D D D D D
Equivalent Full-Range Temperature Coefficient . . . 30 ppm/°C 0.2- Typical Output Impedance Sink-Current Capability . . . 1 mA to 100 mA Low Output Noise Adjustable Output Voltage . . . Vref to 36 V Available in a Wide Range of High-Density Packages
D PACKAGE (TOP VIEW)
CATHODE ANODE ANODE NC
1 2 3 4
8 7 6 5
REF ANODE ANODE NC
P OR PW PACKAGE (TOP VIEW)
description
The TL431 and TL431A 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 TL431C and TL431AC are characterized for operation from 0°C to 70°C, and the TL431I and TL431AI are characterized for operation from –40°C to 85°C.
CATHODE NC NC NC
1 2 3 4
8 7 6 5
REF NC ANODE NC
NC – No internal connection PK PACKAGE (TOP VIEW)
REF ANODE CATHODE
LP PACKAGE (TOP VIEW)
CATHODE ANODE REF
KTP PACKAGE (TOP VIEW)
CATHODE ANODE ANODE REF
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