JAJS762L October   2000  – October 2018 LM4040-N , LM4040-N-Q1

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      シャント基準電圧アプリケーションの回路図
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: 2-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    6. 6.6  Electrical Characteristics: 2-V LM4040-N VR Tolerance Grades 'C', 'D', And 'E'; Temperature Grade 'I'
    7. 6.7  Electrical Characteristics: 2-V LM4040-N VR Tolerance Grades 'C', 'D', And 'E'; Temperature Grade 'E'
    8. 6.8  Electrical Characteristics: 2.5-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I' (AEC Grade 3)
    9. 6.9  Electrical Characteristics: 2.5-V LM4040-N VR Tolerance Grades 'C', 'D', and 'E'; Temperature Grade 'I' (AEC Grade 3)
    10. 6.10 Electrical Characteristics: 2.5-V LM4040-N VR Tolerance Grades 'C', 'D', And 'E'; Temperature Grade 'E' (AEC Grade 1)
    11. 6.11 Electrical Characteristics: 3-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    12. 6.12 Electrical Characteristics: 3-V LM4040-N VR Tolerance Grades 'C', 'D', And 'E'; Temperature Grade 'I'
    13. 6.13 Electrical Characteristics: 3-V LM4040-N VR Tolerance Grades 'C', 'D', And 'E'; Temperature Grade 'E'
    14. 6.14 Electrical Characteristics: 4.1-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    15. 6.15 Electrical Characteristics: 4.1-V LM4040-N VR Tolerance Grades 'C' and 'D'; Temperature Grade 'I'
    16. 6.16 Electrical Characteristics: 5-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    17. 6.17 Electrical Characteristics: 5-V LM4040-N VR Tolerance Grades 'C' And 'D'; Temperature Grade 'I'
    18. 6.18 Electrical Characteristics: 5-V LM4040-N VR Tolerance Grades 'C' And 'D'; Temperature Grade 'E'
    19. 6.19 Electrical Characteristics: 8.2-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    20. 6.20 Electrical Characteristics: 8.2-V Lm4040-N VR Tolerance Grades 'C' And 'D'; Temperature Grade 'I'
    21. 6.21 Electrical Characteristics: 10-V LM4040-N VR Tolerance Grades 'A' And 'B'; Temperature Grade 'I'
    22. 6.22 Electrical Characteristics: 10-V LM4040-N VR Tolerance Grades 'C' And 'D'; Temperature Grade 'I'
    23. 6.23 Typical Characteristics
      1. 6.23.1 Start-Up Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Shunt Regulator
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 4.1-V ADC Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
      3. 9.2.3 Bounded Amplifier
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
      4. 9.2.4 Protecting Op-Amp Input
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
      5. 9.2.5 Precision ±4.096-V Reference
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
      6. 9.2.6 Precision Current Sink/Source
        1. 9.2.6.1 Design Requirements
        2. 9.2.6.2 Detailed Design Procedure
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 関連リンク
    3. 12.3 ドキュメントの更新通知を受け取る方法
    4. 12.4 コミュニティ・リソース
    5. 12.5 商標
    6. 12.6 静電気放電に関する注意事項
    7. 12.7 Glossary
  13. 13メカニカル、パッケージ、および注文情報
    1. 13.1 SOT-23、SC70パッケージ・マーキング情報

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

9.2.3.2 Detailed Design Procedure

With amplifier rails of ±15 V, the output can be bound to ±11.5 V with the LM4040-10 and two nominal diode voltage drops of 0.7 V.

Equation 5. VOUTBound = 2 × VFWD + VZ
Equation 6. VOUTBound = 1.4 V + 10 V

Select RS = 15 kΩ to keep IR low. Calculate IR to confirm RS selection.

Equation 7. IR = (VIN – VOUT) / R, however in this case, the negative supply must be taken into account.
Equation 8. IR = (VIN+ – VIN- – VOUT)/R = (30 V – 10 V) / (RS1+RS2) = 20 V / 30 kΩ = 0.667 mA

This is an acceptable value for IR that will not draw excessive current, but prevents the part from being starved for current.