描述 Description

Three-terminal shunt regulator family with an output voltage range between Vref = 2.495 V and 36 V, to be set by two external resistors.
Table 1. Product overview Reference voltage
tolerance (Vref)
Temperature range (Tamb)
Pinning configuration
(see Table 5.)
0 °C to 70 °C
-40 °C to 85 °C
-40 °C to 125 °C
2.0 %
TL431CDBZR-Q
TL431IDBZR-Q
TL431QDBZR-Q
normal pinning
TL431FDT-Q
normal pinning
TL431MFDT-Q
mirrored pinning
1.0 %
TL431ACDBZR-Q
TL431AIDBZR-Q
TL431AQDBZR-Q
normal pinning
TL431AFDT-Q
normal pinning
TL431AMFDT-Q
mirrored pinning
0.5 %
TL431BCDBZR-Q
TL431BIDBZR-Q
TL431BQDBZR-Q
normal pinning
TL431BFDT-Q
normal pinning
TL431BMFDT-Q
mirrored pinning

特性 Features

? Programmable output voltage up to 36 V
? Three different reference voltage tolerances:
?
? Standard grade: 2 %
? A-Grade: 1 %
? B-Grade: 0.5 %

? Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C)
? Low output noise
? Typical output impedance: 0.2 Ω
? Sink current capability: 1 mA to 100 mA
? Qualified according to AEC-Q100 (grade 1) and recommended for use in automotive applications

應用 Application

Shunt regulator
Precision current limiter
Precision constant current sink
Isolated feedback loop for Switch Mode Power Supply (SMPS)