DESCRIPTION

The TL431/TL431A/TL431B series precision adjustable three terminal shunt voltage regulators are pin-to-pin compatible with the industry standard TL431. The output voltage of this reference is programmable by using two external resistors from 2.5V to 36V. These devices offer low output impedance for improved load regulation.

KEY FEATURES

■ INITIAL VOLTAGE REFERENCE

ACCURACY OF 0.4 (TL431B)

■ SINK CURRENT CAPABILITY 1mA

to 100mA

■ TYPICAL OUTPUT DYNAMIC

IMPEDANCE LESS THAN 200mΩ;

TYPICAL OUTPUT IMPEDANCE OF

THE TL431B LESS THAN 100mΩ

■ ADJUSTABLE OUTPUT VOLTAGE

FROM 2.5V TO 36V

■ AVAILABLE IN SURFACE-MOUNT PACKAGES

■ LOW OUTPUT NOISE

■ TYPICAL EQUIVALENT FULL

RANGE TEMPERATURE

COEFFICIENT OF 30ppm/°C

■ DIRECT PIN-TO-PIN

REPLACEMENT FOR INDUSTRY

STANDARD TL431 AND TL1431

TL431BCDM属于集成电路（IC） > 电压基准。美高森美公司制造生产的TL431BCDM电压基准产品属于基准电压源系列，可通过相对较不稳定的电源提供稳定的电势，电压值始终保持恒定，以便在测量、控制和类似应用中用作比较的标准。其功能行为可能与用于大功率调节的线性稳压器相似，但基准电压源器件却不适合用于此类用途。用作比较标准时，若输出电流容量或实际负载电流增大，其性能通常会降低。