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ATL432

現行

2.5V 精密可編程分流穩壓器

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產品規格表

現在提供此產品的更新版本

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引腳對引腳且具備與所比較裝置相同的功能
ATL432LI 現行 高頻寬、低 IQ 可編程分流穩壓器 (針腳配置：RKA) This pin-to-pin upgrade offers improved stability boundaries and lower reference input current to optimize voltage-output accuracy.
功能相同，但引腳輸出與所比較的裝置不同
TL432 現行 可調精密度分流穩壓器 (反向針腳配置) for cost optimized designs

ATL432

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 Iz for regulation (min) (µA) 20 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Reference voltage (V) adjustable Temp coeff (max) (ppm/°C) 92 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
Rating Catalog VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 Iz for regulation (min) (µA) 20 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Reference voltage (V) adjustable Temp coeff (max) (ppm/°C) 92 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Adjustable Regulated Output of 2.5V to 36V
  • Very-Low Operating Current
    • IKA(min) = 35µA (Maximum)
    • IREF = 150nA (Maximum)
  • Internally Compensated for Stability
    • Stable With No Capacitive Load
  • Reference Voltage Tolerances at 25°C
    • 0.5% for B Grade
    • 1% for A Grade
  • Typical Temperature Drift
    • 5mV (–40°C to +85°C); I Version
    • 6mV (–40°C to +125°C); Q Version
  • Extended Cathode Current Range 35µA to 100mA
  • Low Output Impedance of 0.3Ω (Maximum)
  • Adjustable Regulated Output of 2.5V to 36V
  • Very-Low Operating Current
    • IKA(min) = 35µA (Maximum)
    • IREF = 150nA (Maximum)
  • Internally Compensated for Stability
    • Stable With No Capacitive Load
  • Reference Voltage Tolerances at 25°C
    • 0.5% for B Grade
    • 1% for A Grade
  • Typical Temperature Drift
    • 5mV (–40°C to +85°C); I Version
    • 6mV (–40°C to +125°C); Q Version
  • Extended Cathode Current Range 35µA to 100mA
  • Low Output Impedance of 0.3Ω (Maximum)

The ATL431 and ATL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.05Ω. 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.

The ATL43x has > 20x improvement cathode current range over its TL43x predecessor. It also is stable with a wider range of load capacitance types and values.

ATL431 and ATL432 are the exact same parts but with different pinouts and order numbers. The ATL43x is offered in two grades, with initial tolerances (at 25°C) of 0.5%, 1%, for the B and A grade, respectively. In addition, low output drift vs temperature ensures consistent voltage regulation over the entire temperature range.

The ATL43xxI devices are characterized for operation from –40°C to +85°C, and the ATL43xxQ devices are characterized for operation from –40°C to +125°C.

The ATL431 and ATL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.05Ω. 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.

The ATL43x has > 20x improvement cathode current range over its TL43x predecessor. It also is stable with a wider range of load capacitance types and values.

ATL431 and ATL432 are the exact same parts but with different pinouts and order numbers. The ATL43x is offered in two grades, with initial tolerances (at 25°C) of 0.5%, 1%, for the B and A grade, respectively. In addition, low output drift vs temperature ensures consistent voltage regulation over the entire temperature range.

The ATL43xxI devices are characterized for operation from –40°C to +85°C, and the ATL43xxQ devices are characterized for operation from –40°C to +125°C.
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open-in-new 比較替代產品
引腳對引腳且具備與所比較裝置相同的功能
TLA432 現行 具有 RKA 接腳配置的所有電容器穩定精密可編程參考 Improved to all load cap stability, improved temperature drift

技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet ATL43x 2.5V Low Iq Adjustable Precision Shunt Regulator datasheet (Rev. E) PDF | HTML 2024年 12月 4日
E-book Tips and tricks for designing with voltage references (Rev. A) 2021年 5月 7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
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Technical article Designing for isolated DC/DC converter shunt safety PDF | HTML 2015年 8月 29日

設計與開發

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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
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模擬型號

ATL432A PSpice Transient Model (Rev. B)

SLVMAT2B.ZIP (59 KB) - PSpice Model
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模擬型號

ATL432A Unencrypted PSpice Transient Model

SLVMBN9.ZIP (1 KB) - PSpice Model
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模擬型號

ATL432B PSpice Transient Model (Rev. B)

SLVMAT1B.ZIP (59 KB) - PSpice Model
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模擬型號

ATL432B Unencrypted PSpice Transient Model

SLVMBN8.ZIP (1 KB) - PSpice Model
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計算工具

SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.
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模擬工具

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

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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SOT-23 (DBZ) 3 Ultra Librarian
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