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ATL431LI

現行

以超小型 DQN 封裝提供的低 IQ 可編程分流穩壓器

立即訂購
產品規格表

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TL431 現行 可調整精密度分流穩壓器 for cost optimized designs

ATL431LI

現行
產品規格表 立即訂購

產品詳細資料

VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 80 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 66 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 80 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 66 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 X2SON (DQN) 4 1 mm² 1 x 1
  • 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
  • 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.

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.
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技術文件

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類型 標題 日期
* Data sheet ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator datasheet (Rev. D) PDF | HTML 2019年 11月 21日
Application note Optimization of a Shunt Reference for Flyback Converters PDF | HTML 2023年 10月 18日
Application note Designing Stable Isolated Power Supplies with Shunt Regulators PDF | HTML 2022年 12月 29日
Application note Shunt Regulator Design Procedures for Secondary Feedback Loop PDF | HTML 2021年 2月 2日
Analog Design Journal High-power, low-cost, discrete linear pre-regulator for automotive rear lights 2020年 12月 21日
Application note Precision Current Sources and Sinks Using Voltage References 2020年 6月 30日
Technical article How modern voltage references help shrink small designs PDF | HTML 2020年 6月 1日
Application note Extending the Input Voltage Range of the LM5180‐Q1 PSR Flyback for VDA320(LV148) 2020年 1月 30日
Application note Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) 2019年 12月 11日
Selection guide 431 Device Nomenclature (Rev. B) 2019年 9月 18日
EVM User's guide ATL431LIEVM User's Guide 2019年 8月 30日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Technical article Gain ultra-high power density for 100-W USB Power Delivery adapters PDF | HTML 2019年 3月 5日
Application note Designing with the ATL431LI 2018年 11月 27日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

ATL431EVM-001 — ATL431 可調整分流穩壓器評估模組

The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply. (...)

使用指南: PDF
TI.com 無法提供
開發板

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

The ATL431LI evaluation module (EVM) is an adjustable-voltage reference board that evaluates the ATL431LI device in the super-thin small-outline no-lead (X2SON) DQN small-form-factor package.

使用指南: PDF
TI.com 無法提供
模擬型號

ATL431LI PSpice Transient Model

SLVMCW7.ZIP (56 KB) - PSpice Model
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模擬型號

ATL431LI Unencrypted PSpice Transient Model

SLVMCW6.ZIP (2 KB) - PSpice Model
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模擬型號

TL431LI and ATL431LI PSpice Average Model

SLVMCX5.ZIP (78 KB) - PSpice Model
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模擬型號

TL431LI and ATL431LI Unencrypted PSpice Average Model

SLVMCX4.ZIP (1 KB) - PSpice Model
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
參考設計

PMP40586 — 1-kW 數位控制的電流模式 LLC 參考設計

此參考設計為業界首款數位混合磁滯控制 (HHC) 解決方案，專為配備 12-V 至 54-V 輸出的伺服器 PSU 應用領域打造。此參考設計展現 UCD3138 在 400-V 至 12-V 1-kW LLC 功率級的 HHC 控制優勢。此設計可實現 8-kHz 峰值迴路頻寬。它在 2.5 A/us 的 0% 和 100% 負載轉換下保持小於 500 mV 的峰間偏差，在 2.5 A/us 的 0% 和 150% 負載轉換下保持小於 800-mV 的峰值偏差。
Test report: PDF
參考設計

PMP41081 — 使用 C2000™ 即時微控制器的 1-kW、12-V HHC LLC 參考設計

此參考設計為一個 1-kW，400-V 至 12-V 半橋諧振 DC/DC 平臺，適用於評估採用 F280039C 微控制器的混合磁滯控制 (HHC) 負載瞬態性能。HHC 是一種結合直接頻率控制 (DFC) 和充電控制的方法，並透過增加的頻率補償斜率進行充電控制。藉由額外的內部迴路，HHC 可改善電感器-電感器-電容器 (LLC) 的負載瞬態回應性能。
Test report: PDF
參考設計

TIDA-01623 — 30-W/in3、93.4% 效率、100-W AC/DC 變壓器參考設計

This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC) (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP31193 — 具多重輸出的三相輸入波谷切換返馳參考設計

此參考設計使用 UCC28742 返馳控制器，可從三相輸入產生 23 V @ 1.0 A 與 5.0 V @ 0.15 A 兩種輸出。UCC28742 使用光學耦合器來調節輸出並改善暫態響應。波谷切換技術可減少切換損耗，並維持高效率。
Test report: PDF
參考設計

PMP22396 — 適合汽車應用的 2460-W 雙向升壓轉換器參考設計

This reference design is a 2460-W bidirectional boost converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 48 V at 51.25 A. The design uses two dual-phase synchronous bidirectional controllers operating at a switching frequency (...)
Test report: PDF
電路圖: PDF
參考設計

PMP30825 — 150-VDC - 430-VDC 輸入、多輸出波谷切換返馳參考設計

This 10-W non-isolated flyback reference design uses the UCC28742 controller to generate four outputs (5 V at 150 mA, 12 V at 690 mA, 15 V at 80 mA, 18 V at 20 mA). The controller provides constant-voltage and constant-current regulation. Transistors are used in place of an optocoupler feedback (...)
Test report: PDF
電路圖: PDF
參考設計

PMP22151 — 70-W 返馳與 37-W 升壓電源參考設計

This reference design uses two LM5155 devices to make a flyback and boost power stage. The flyback creates an isolated 28 Vdc bus from a 24 +/-10% Vdc bus and the boost creates a 37 Vdc bus from the output of the flyback. The flyback can be loaded up to 70 W and the boost can be loaded up to 37-W. (...)
Test report: PDF
電路圖: PDF
參考設計

PMP30720 — 高效、超寬輸入 (20 VDC 至 375 VDC) 隔離式電源供應參考設計

This reference design uses the UCC28C42 boost controller and the UCC28780 active-clamp flyback controller to generate an isolated output of 24 V at 3.5 A over an ultra-wide input voltage range of 20 V to 375 V. The design also uses the UCC24612 synchronous rectifier controller on the secondary (...)
Test report: PDF
電路圖: PDF
參考設計

PMP22021 — 精巧型隔離式 DC/DC 返馳參考設計

This reference design uses LM5022-Q1 to make an isolated 3.3-V output capable of 1.1-A from a 9-V to 15-V input. All components are placed on one side of the board to reduce assembly complexity and cost. A secondary filter reduces the output ripple to under 30-mV peak-to-peak. The design can (...)
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBZ) 3 Ultra Librarian
X2SON (DQN) 4 Ultra Librarian
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  • 進行中持續性的可靠性監測
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