JAJSG75A September   2018  – March 2019 LM5164-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.      代表的なアプリケーション
      2.      代表的なアプリケーションの効率、VOUT = 12V時
  4. 4 改訂履歴
  5. 5 概要 (続き)
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Control Architecture
      2. 8.3.2  Internal VCC Regulator and Bootstrap Capacitor
      3. 8.3.3  Regulation Comparator
      4. 8.3.4  Internal Soft Start
      5. 8.3.5  ON-Time Generator
      6. 8.3.6  Current Limit
      7. 8.3.7  N-Channel Buck Switch and Driver
      8. 8.3.8  Synchronous Rectifier
      9. 8.3.9  Enable/Undervoltage Lockout (EN/UVLO)
      10. 8.3.10 Power Good (PGOOD)
      11. 8.3.11 Thermal Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Active Mode
      3. 8.4.3 Sleep Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Switching Frequency (RRON)
        3. 9.2.2.3 Buck Inductor (LO)
        4. 9.2.2.4 Output Capacitor (COUT)
        5. 9.2.2.5 Input Capacitor (CIN)
        6. 9.2.2.6 Type 3 Ripple Network
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Compact PCB Layout for EMI Reduction
      2. 11.1.2 Feedback Resistors
    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 デバイス・サポート
      1. 12.1.1 デベロッパー・ネットワークの製品に関する免責事項
      2. 12.1.2 開発サポート
        1. 12.1.2.1 WEBENCH® ツールによるカスタム設計
    2. 12.2 関連資料
    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

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

9.2.1 Design Requirements

The target full-load efficiency is 92% based on a nominal input voltage of 48 V and an output voltage of 12 V. The required input voltage range is 15 V to 100 V. The LM5164-Q1 delivers a fixed 12-V output voltage. The switching frequency is set by resistor RRON at 300 kHz. The output voltage soft-start time is 3 ms. The required components are listed in Table 2. Refer to the LM5164-Q1EVM-041 EVM user's guide for more detail.

Table 2. List of Components

COUNT REF DES VALUE DESCRIPTION PART NUMBER MANUFACTURER
2 CIN 2.2 µF Capacitor, Ceramic, 2.2µF, 100V, X7R, 10% CGA6N3X7R2A225K230AB TDK
2 COUT 22 µF Capacitor, Ceramic, 22µF, 25V, X7R, 10% TMK325B7226KMHT Taiyo Yuden
1 CA 3300 pF Capacitor, Ceramic, 3300pF, 16V, X7R, 10% CGA3E2X7R2A332K080AA TDK
1 CB 56 pF Capacitor, Ceramic, 56pF, 50V, X7R, 10% C0603C560J5GACTU Kemet
1 CBST 2.2 nF Capacitor, Ceramic, 2200pF, 50V, X7R, 10% GCM155R71H222KA37D MuRata
1 LO 68 µH Inductor, 68 µH, 170 mΩ, >1.8A MSS1246T-683MLB Coilcraft
1 RRON 100 kΩ Resistor, Chip, 100 k, 1%, 0.1 W, 0603 RG1608P-1053-B-T5 Susumu Co Ltd
1 RFB1 453 kΩ Resistor, Chip, 453 k, 1%, 0.1 W, 0603 RT0603BRD07448KL Yageo
1 RFB2 49.9 kΩ Resistor, Chip, 49.9 k, 1%, 0.1 W, 0603 RG1608P-4992-B-T5 Susumu Co Ltd
1 RA 453 kΩ Resistor, Chip, 453 k, 1%, 0.1W, 0603 RT0603BRD07453KL Yageo
1 U1 Wide VIN synchronous buck converter LM5164QDDARQ1 TI