JAJSSB5H July   2004  – December 2023 LP2981 , LP2981A

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Output Enable
      2. 6.3.2 Dropout Voltage
      3. 6.3.3 Current Limit
      4. 6.3.4 Undervoltage Lockout (UVLO)
      5. 6.3.5 Thermal Shutdown
      6. 6.3.6 Output Pulldown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Functional Mode Comparison
      2. 6.4.2 Normal Operation
      3. 6.4.3 Dropout Operation
      4. 6.4.4 Disabled
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Recommended Capacitor Types
        1. 7.1.1.1 Recommended Capacitors for the Legacy Chip
          1. 7.1.1.1.1 Tantalum Capacitors
          2. 7.1.1.1.2 Ceramic Capacitors
          3. 7.1.1.1.3 Aluminum Capacitors
        2. 7.1.1.2 Recommended Capacitors for the New Chip
      2. 7.1.2 Input and Output Capacitor Requirements
        1. 7.1.2.1 Input Capacitor
        2. 7.1.2.2 Output Capacitor
      3. 7.1.3 Estimating Junction Temperature
      4. 7.1.4 Power Dissipation (PD)
      5. 7.1.5 Reverse Current
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 ON and OFF Input Operation
      3. 7.2.3 Application Curves
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Nomenclature
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 サポート・リソース
    5. 10.5 Trademarks
    6. 10.6 静電気放電に関する注意事項
    7. 10.7 用語集
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

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

7.2.3 Application Curves

GUID-DCAEA379-7C45-4F7A-9A7E-53FA16B4D0C0-low.png
VOUT = 5 V, COUT = 3.3 μF
Figure 7-3 5-V, 3.3-μF ESR Curves (Legacy Chip)
GUID-ADE83CE3-C7D3-4E18-A7E1-C3B68C006F08-low.png
VOUT = 3.0 V, COUT = 3.3 μF
Figure 7-5 3.0-V, 3.3-μF ESR Curves (Legacy Chip)
GUID-20231203-SS0I-SX1H-KLJ1-WKBNBDFXK7J9-low.svg
VOUT = 3.3 V, IL = 100 mA
Figure 7-7 Line Transient Response (New Chip)
GUID-20231125-SS0I-9RVB-XJLQ-43DK3B88T3LM-low.svg
VOUT = 3.3 V, COUT = 2.2 μF
Figure 7-9 Load Transient Response (New Chip)
GUID-20231203-SS0I-2MBB-KD6J-XNSCBWRFWGRC-low.svg
VOUT = 5 V, RL = 5 kΩ
Figure 7-11 Turn-off Waveform (New Chip)
GUID-E9B65ACA-AEDB-4EDB-BC22-4A47447F1622-low.png
VOUT = 5 V, CL = 10 μF
Figure 7-4 5-V, 10-μF ESR Curves (Legacy Chip)
GUID-1F6D2BF5-F8C7-4F28-889E-11C45520B62F-low.png
VOUT = 3.0 V, CL = 10 μF
Figure 7-6 3.0-V, 10-μF ESR Curves (Legacy Chip)
GUID-20231203-SS0I-WTMH-J9VM-P3BW6DMJJ48C-low.svg
VOUT = 3.3 V, IL = 1 mA
Figure 7-8 Line Transient Response (New Chip)
GUID-20231125-SS0I-37DK-VDB0-LKN3QRVMTSLL-low.svg
VOUT = 3.3 V, RL = 3.3 kΩ
Figure 7-10 Turn-on Waveform (New Chip)