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.
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 | |||
Key features and benefits
Features and benefits
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
Key applications
Applications
Shunt regulator
Precision current limiter
Precision constant current sink
Isolated feedback loop for Switch Mode Power Supply (SMPS)
Products
Automotive qualified products (AEC-Q100/Q101)
| Type number | Description | Status | Quick access |
|---|---|---|---|
| TL431AFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431FDT-Q | Adjustable precision shunt regulators | Production | |
| TL431IDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431BIDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431MFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431BCDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431AIDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BQDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BMFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431AQDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431CDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431AMFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431ACDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431QDBZR-Q | Adjustable precision shunt regulators | Production |
Bipolar transistors
| Type number | Description | Status | Quick access |
|---|---|---|---|
| TL431AFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431FDT-Q | Adjustable precision shunt regulators | Production | |
| TL431IDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431BIDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431MFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431BCDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431AIDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BQDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431BMFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431AQDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431CDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431AMFDT-Q | Adjustable precision shunt regulators | Production | |
| TL431ACDBZR-Q | Adjustable precision shunt regulators | Production | |
| TL431QDBZR-Q | Adjustable precision shunt regulators | Production |
Documentation
| File name | Title | Type | Date |
|---|---|---|---|
| vp_TL431-Q_FAM.zip | Adjustable precision shunt regulators | Value proposition | 2024-03-03 |
| TL431-Q_FAM.pdf | Adjustable precision shunt regulators | Data sheet | 2024-04-30 |
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