JAJSBH4G February   2011  – March 2022 LM21215

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Ratings
    4. 6.4 Electrical Characteristics
    5. 6.5 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Precision Enable
      2. 7.3.2 UVLO
      3. 7.3.3 Current Limit
      4. 7.3.4 Short-Circuit Protection
      5. 7.3.5 Thermal Protection
      6. 7.3.6 Light Load Operation
      7. 7.3.7 Power Good Flag
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Typical Application 1
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2 Output Voltage
          3. 8.2.1.2.3 Precision Enable
          4. 8.2.1.2.4 Soft Start
          5. 8.2.1.2.5 Inductor Selection
          6. 8.2.1.2.6 Output Capacitor Selection
          7. 8.2.1.2.7 Input Capacitor Selection
          8. 8.2.1.2.8 Programmable Current Limit
          9. 8.2.1.2.9 Control Loop Compensation
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Typical Application Schematic 2
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
  9. 9 Layout
    1. 9.1 Layout Considerations
    2. 9.2 Layout Example
      1. 9.2.1 Thermal Considerations
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
      2. 10.1.2 Development Support
        1. 10.1.2.1 Custom Design With WEBENCH® Tools
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, 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

8.2.2.1 Design Requirements

Table 8-3 Bill Of Materials (VIN = 4 V–5.5 V, VOUT = 0.9 V, IOUT = 8 A)
IDDESCRIPTIONVENDORPART NUMBERQUANTITY
CFCAP, CERM, 1 μF, 10 V, ±10%, X7R, 0603MuRataGRM188R71A105KA61D1
CIN1, CO1, CO2CAP, CERM, 100 μF, 6.3 V, ±20%, X5R, 1206MuRataGRM31CR60J107ME39L3
CC1CAP, CERM, 1800 pF, 50 V, ±5%, C0G/NP0, 0603MuRataGRM1885C1H182JA01D1
CC2CAP, CERM, 82 pF, 50 V, ±5%, C0G/NP0, 0603TDKC1608C0G1H820J1
CC3CAP, CERM, 820 pF, 50 V, ±5%, C0G/NP0, 0603TDKC1608C0G1H821J1
CSSCAP, CERM, 0.033 μF, 16 V, ±10%, X7R, 0603MuRataGRM188R71C333KA01D1
LOInductor, Shielded Drum Core, 680 nH, 22 A, 0.0014 Ω, SMDCoilcraftXAL1060-681ME1
RFRES, 1.0 Ω, 5%, 0.1 W, 0603Vishay-DaleCRCW06031R00JNEA1
RC1RES, 8.25 kΩ, 1%, 0.1 W, 0603Vishay-DaleCRCW06038K25FKEA1
RC2RES, 124 Ω, 1%, 0.1 W, 0603Vishay-DaleCRCW0603124RFKEA1
REN1, RFB1, RPGOODRES, 10 kΩ, 1%, 0.1 W, 0603Vishay-DaleCRCW060310K0FKEA3
REN2RES, 19.6 kΩ, 1%, 0.1 W, 0603Vishay-DaleCRCW060319K6FKEA1
RFB2RES, 20.0 kΩ, 1%, 0.1 W, 0603Vishay-DaleCRCW060320K0FKEA1
RILIMRES, 39.2 kΩ, 1%, 0.1 W, 0603Vishay-DaleCRCW060339K2FKEA1