TL431 family
Adjustable precision shunt regulator
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 | ||
|---|---|---|---|---|
0 ° C to 70 °C | -40 ° C to 85 °C | -40 ° C to 125 °C | ||
2.0 % | TL431CDBZR | TL431IDBZR | TL431QDBZR | normal pinning |
TL431FDT | normal pinning | |||
TL431MFDT | mirrored pinning | |||
1.0 % | TL431ACDBZR | TL431AIDBZR | TL431AQDBZR | normal pinning |
TL431AFDT | normal pinning | |||
TL431AMFDT | mirrored pinning | |||
0.5 % | TL431BCDBZR | TL431BIDBZR | TL431BQDBZR | normal pinning |
TL431BFDT | normal pinning | |||
TL431BMFDT | mirrored pinning | |||
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
AEC-Q100 qualified (grade 1)
Applications
Shunt regulator
Precision current limiter
Precision constant current sink
Isolated feedback loop for Switch Mode Power Supply (SMPS)
Parametrics
| Type number | Package version | Package name | Size (mm) | Pinning configuration | Tamb (°C) | Vref tolerance (%) | Vref (V) | VKA (V) | IK (mA) |
|---|---|---|---|---|---|---|---|---|---|
| TL431ACDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | 0~70 | 1 | 2.495 | 36 | 100 |
| TL431AFDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 1 | 2.495 | 36 | 100 |
| TL431AIDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~85 | 1 | 2.495 | 36 | 100 |
| TL431AMFDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | mirrored | -40~125 | 1 | 2.495 | 36 | 100 |
| TL431AQDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 1 | 2.495 | 36 | 100 |
| TL431BCDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | 0~70 | 0.5 | 2.495 | 36 | 100 |
| TL431BFDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 0.5 | 2.495 | 36 | 100 |
| TL431BIDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~85 | 0.5 | 2.495 | 36 | 100 |
| TL431BMFDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | mirrored | -40~125 | 0.5 | 2.495 | 36 | 100 |
| TL431BQDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 0.5 | 2.495 | 36 | 100 |
| TL431CDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | 0~70 | 2 | 2.495 | 36 | 100 |
| TL431FDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 2 | 2.495 | 36 | 100 |
| TL431IDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~85 | 2 | 2.495 | 36 | 100 |
| TL431MFDT | SOT23 | SOT23 | 2.9 x 1.3 x 1 | mirrored | -40~125 | 2 | 2.495 | 36 | 100 |
| TL431QDBZR | SOT23 | SOT23 | 2.9 x 1.3 x 1 | normal | -40~125 | 2 | 2.495 | 36 | 100 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| TL431ACDBZR | TL431ACDBZR,215 (935288019215) |
Active | CD% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431ACDBZRVL (935288019235) |
Active | CD% | SOT23_235 | ||||
| TL431AFDT | TL431AFDT/8R (935690761215) |
Active | AS% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431AFDT,215 (935293275215) |
Active | AS% | SOT23_215 | ||||
| TL431AIDBZR | TL431AIDBZR,215 (935288021215) |
Active | CE% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431AMFDT | TL431AMFDT,215 (935293278215) |
Active | AV% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431AQDBZR | TL431AQDBZR,215 (935288022215) |
Active | CF% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431AQDBZRVL (935288022235) |
Active | CF% | SOT23_235 | ||||
| TL431BCDBZR | TL431BCDBZR,215 (935288023215) |
Active | CG% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431BCDBZRVL (935288023235) |
Active | CG% | SOT23_235 | ||||
| TL431BFDT | TL431BFDT,215 (935293276215) |
Active | AT% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431BIDBZR | TL431BIDBZR,215 (935288024215) |
Active | CH% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431BMFDT | TL431BMFDT,215 (935293279215) |
Active | AW% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431BMFDTVL (935293279235) |
Active | AW% | SOT23_235 | ||||
| TL431BQDBZR | TL431BQDBZR,215 (935288025215) |
Active | CJ% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431CDBZR | TL431CDBZR,215 (935288016215) |
Active | CA% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431FDT | TL431FDT,215 (935293274215) |
Active | AR% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431IDBZR | TL431IDBZR,215 (935288017215) |
Active | CB% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431MFDT | TL431MFDT,215 (935293277215) |
Active | AU% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
| TL431QDBZR | TL431QDBZR,215 (935288018215) |
Active | CC% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_215 |
All type numbers in the table below are discontinued.
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| TL431AMSDT | TL431AMSDT,115 (935289169115) |
Obsolete | no package information | ||||
| TL431AMSDT,215 (935289169215) |
Obsolete | ||||||
| TL431ASDT | TL431ASDT,215 (935288351215) |
Obsolete | no package information | ||||
| TL431BMSDT | TL431BMSDT,215 (935290969215) |
Obsolete | no package information | ||||
| TL431BSDT | TL431BSDT,215 (935290968215) |
Obsolete | no package information | ||||
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| TL431ACDBZR | TL431ACDBZR,215 | TL431ACDBZR |
|
|
| TL431ACDBZR | TL431ACDBZRVL | TL431ACDBZR |
|
|
| TL431AFDT | TL431AFDT/8R | TL431AFDT |
|
|
| TL431AFDT | TL431AFDT,215 | TL431AFDT |
|
|
| TL431AIDBZR | TL431AIDBZR,215 | TL431AIDBZR |
|
|
| TL431AMFDT | TL431AMFDT,215 | TL431AMFDT |
|
|
| TL431AQDBZR | TL431AQDBZR,215 | TL431AQDBZR |
|
|
| TL431AQDBZR | TL431AQDBZRVL | TL431AQDBZR |
|
|
| TL431BCDBZR | TL431BCDBZR,215 | TL431BCDBZR |
|
|
| TL431BCDBZR | TL431BCDBZRVL | TL431BCDBZR |
|
|
| TL431BFDT | TL431BFDT,215 | TL431BFDT |
|
|
| TL431BIDBZR | TL431BIDBZR,215 | TL431BIDBZR |
|
|
| TL431BMFDT | TL431BMFDT,215 | TL431BMFDT |
|
|
| TL431BMFDT | TL431BMFDTVL | TL431BMFDT |
|
|
| TL431BQDBZR | TL431BQDBZR,215 | TL431BQDBZR |
|
|
| TL431CDBZR | TL431CDBZR,215 | TL431CDBZR |
|
|
| TL431FDT | TL431FDT,215 | TL431FDT |
|
|
| TL431IDBZR | TL431IDBZR,215 | TL431IDBZR |
|
|
| TL431MFDT | TL431MFDT,215 | TL431MFDT |
|
|
| TL431QDBZR | TL431QDBZR,215 | TL431QDBZR |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| TL431AMSDT | TL431AMSDT,115 | TL431AMSDT |
|
|
| TL431AMSDT | TL431AMSDT,215 | TL431AMSDT |
|
|
| TL431ASDT | TL431ASDT,215 | TL431ASDT |
|
|
| TL431BMSDT | TL431BMSDT,215 | TL431BMSDT |
|
|
| TL431BSDT | TL431BSDT,215 | TL431BSDT |
|
|
Documentation (9)
| File name | Title | Type | Date |
|---|---|---|---|
| 006aab355 | Block diagram: TL431ACDBZR, TL431AIDBZR, TL431AMSDT, TL431AQDBZR, TL431ASDT, TL431BCDBZR, TL431BIDBZR, TL431BQDBZR, TL431CDBZR, TL431IDBZR, TL431MSDT, TL431QDBZR, TL431SDT | Block diagram | 2009-11-04 |
| sot023_sv | Simplified outline: SOT23 (TO-236AB) | Block diagram | 2010-02-10 |
| SOT23 | 3D model for products with SOT23 package | Design support | 2019-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SOT23_mk | plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body | Marcom graphics | 2017-01-28 |
| SOT23 | plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body | Package information | 2022-10-12 |
| REFLOW_BG-BD-1 | Reflow soldering profile | Reflow soldering | 2021-04-06 |
| Nexperia_Selection_guide_2023 | Nexperia Selection Guide 2023 | Selection guide | 2023-05-10 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
Support
If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.
Models
| File name | Title | Type | Date |
|---|---|---|---|
| SOT23 | 3D model for products with SOT23 package | Design support | 2019-01-22 |
Ordering, pricing & availability
Sample
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