JAJSEF4N April   2012  – April 2018 LP5907

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     Device Images
      1.      概略回路図
  4. 改訂履歴
  5. Pin Configuration and Functions
    1.     Pin Functions: DSBGA
    2.     Pin Functions: X2SON, SOT-23
  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
    6. 6.6 Output and Input Capacitors
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable (EN)
      2. 7.3.2 Low Output Noise
      3. 7.3.3 Output Automatic Discharge
      4. 7.3.4 Remote Output Capacitor Placement
      5. 7.3.5 Thermal Overload Protection (TSD)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable (EN)
      2. 7.4.2 Minimum Operating Input Voltage (VIN)
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Power Dissipation and Device Operation
        3. 8.2.2.3 External Capacitors
        4. 8.2.2.4 Input Capacitor
        5. 8.2.2.5 Output Capacitor
        6. 8.2.2.6 Capacitor Characteristics
        7. 8.2.2.7 Remote Capacitor Operation
        8. 8.2.2.8 No-Load Stability
        9. 8.2.2.9 Enable Control
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 X2SON Mounting
      2. 10.1.2 DSBGA Mounting
      3. 10.1.3 DSBGA Light Sensitivity
    2. 10.2 Layout Examples
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 ドキュメントのサポート
      1. 11.1.1 WEBENCH®ツールによるカスタム設計
      2. 11.1.2 関連資料
    2. 11.2 ドキュメントの更新通知を受け取る方法
    3. 11.3 コミュニティ・リソース
    4. 11.4 商標
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 Glossary
  12. 12メカニカル、パッケージ、および注文情報

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

Output Capacitor

The LP5907 is designed specifically to work with a very small ceramic output capacitor, typically 1 µF. A ceramic capacitor (dielectric types X5R or X7R) in the 1 µF to 10 µF range, and with ESR between 5 mΩ to 500 mΩ, is suitable in the LP5907 application circuit. For this device the output capacitor should be connected between the OUT pin and a good connection back to the GND pin.

It may also be possible to use tantalum or film capacitors at the device output, VOUT, but these are not as attractive for reasons of size and cost (see Capacitor Characteristics).

The output capacitor must meet the requirement for the minimum value of capacitance and have an ESR value that is within the range 5 mΩ to 500 mΩ for stability. Like the input capacitor, the initial tolerance, applied voltage de-rating, and temperature coefficient must all be considered when selecting the input capacitor to ensure the actual capacitance is never less than 0.7 µF over the entire operating range.