TL431CDR2G屬于集成電路（IC）的電壓基準(zhǔn)。由安森美半導(dǎo)體公司制造生產(chǎn)的TL431CDR2G電壓基準(zhǔn)產(chǎn)品屬于基準(zhǔn)電壓源系列，可通過(guò)相對(duì)較不穩(wěn)定的電源提供穩(wěn)定的電勢(shì)，電壓值始終保持恒定，以便在測(cè)量、控制和類(lèi)似應(yīng)用中用作比較的標(biāo)準(zhǔn)。其功能行為可能與用于大功率調(diào)節(jié)的線性穩(wěn)壓器相似，但基準(zhǔn)電壓源器件卻不適合用于此類(lèi)用途。用作比較標(biāo)準(zhǔn)時(shí)，若輸出電流容量或?qū)嶋H負(fù)載電流增大，其性能通常會(huì)降低。

The TL431A, B integrated circuits are three?terminal

programmable shunt regulator diodes. These monolithic IC voltage

references operate as a low temperature coefficient zener which is

programmable from Vref to 36 V with two external resistors. These

devices exhibit a wide operating current range of 1.0 mA to 100 mA

with a typical dynamic impedance of 0.22 . The characteristics of

these references make them excellent replacements for zener diodes in

many applications such as digital voltmeters, power supplies, and op

amp circuitry. The 2.5 V reference makes it convenient to obtain

a stable reference from 5.0 V logic supplies, and since the TL431A,

B operates as a shunt regulator, it can be used as either a positive or

negative voltage reference.

特性 Features

? Programmable Output Voltage to 36 V

? Voltage Reference Tolerance: ±0.4, Typ @ 25°C (TL431B)

? Low Dynamic Output Impedance, 0.22  Typical

? Sink Current Capability of 1.0 mA to 100 mA

? Equivalent Full?Range Temperature Coefficient of 50 ppm/°C Typical

? Temperature Compensated for Operation over Full Rated Operating

Temperature Range

? Low Output Noise Voltage

? NCV/SCV Prefixes for Automotive and Other Applications

Requiring Unique Site and Control Change Requirements;

AEC?Q100 Qualified and PPAP Capable

? These Devices are Pb?Free, Halogen Free/BFR Free and are RoHS Compliant