ATL431LI
- Reference voltage tolerance at 25°C
- 0.5% (B Grade)
- 1% (A Grade)
- Minimum typical output voltage: 2.5 V
- Adjustable output voltage: Vref to 36 V
- Operation from −40°C to +125°C (Q temp)
- Maximum temperature drift
- 17 mV (I Temp)
- 27 mV (Q Temp)
- 0.3-Ω Typical output impedance
- Sink-current capability
- Imin = 0.08 mA (max)
- IKA = 15 mA (max)
- Reference input current IREF: 0.4 µA (max)
- Deviation of reference input current over temperature, II(dev): 0.3 µA (max)
- Packages: 1-mm x 1-mm X2SON or SOT23-3
The ATL43xLI device is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.3 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the TL431LI and TL432LI, with lower minimum operating current to help reduce system power consumption. The ATL432LI device has exactly the same functionality and electrical specifications as the ATL431LI device, but has a different pinout for the DBZ package. The ATL431LI is also offered in a tiny X2SON (1.00 mm x 1.00 mm) package which makes it ideal for space constraint applications.
The ATL431LI device is offered in two grades, with initial tolerances (at 25°C) of 0.5%, and 1%, for the B and A grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.
The ATL43xLIxQ devices are characterized for operation from –40°C to +125°C.
技術文件
設計與開發
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ATL431EVM-001 — ATL431 可調整分流穩壓器評估模組
ATL431EVM-001 評估模組 (EVM) 展示 ATL431 的功能與可調整性,讓您可使用各種電阻值對陰極電壓編程。您也可以使用與電源串聯的各種電阻來設定陰極電流。除了 EVM 上提供的電阻器外,您還可以將電阻焊接至電路板上,以根據您的應用自訂電路板。此 EVM 讓您可以透過跳線在陽極與陰極之間應用超過 12 個輸出電容,藉此檢查 ATL431 的穩定性。此 EVM 也相容於採用 SOT23-3 封裝的 TL431、TL431LI、ATL431LI、LM431 與 TLVH432 產品。
ATL431LIEVM — 用於 DQN 封裝的 ATL431LI 高頻寬低 IQ 可編程分流穩壓器評估模組
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| X2SON (DQN) | 4 | Ultra Librarian |
| SOT-23 (DBZ) | 3 | Ultra Librarian |