JAJSH96J June   2010  – April 2019 LMZ10505EXT

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回路
      2.      VOUT = 3.3Vでの効率
  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 Enable
      2. 8.3.2 Enable and UVLO
      3. 8.3.3 Soft-Start
      4. 8.3.4 Soft-Start Capacitor
      5. 8.3.5 Tracking
      6. 8.3.6 Tracking – Equal Soft-Start Time
      7. 8.3.7 Tracking - Equal Slew Rates
      8. 8.3.8 Current Limit
      9. 8.3.9 Overtemperature Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Prebias Start-up Capability
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      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 Input Capacitor Selection
        3. 9.2.2.3 Output Capacitor Selection
          1. 9.2.2.3.1 Output Voltage Setting
        4. 9.2.2.4 Loop Compensation
      3. 9.2.3 Application Curves
        1. 9.2.3.0.1 44
    3. 9.3 System Examples
      1. 9.3.1 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output With Optimized Ripple and Transient Response
      2. 9.3.2 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output
      3. 9.3.3 EMI Tested Schematic for 2.5-V Output Based on 3.3-V to 5-V Input
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
    3. 11.3 Estimate Power Dissipation and Thermal Considerations
    4. 11.4 Power Module SMT Guidelines
  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 ドキュメントのサポート
      1. 12.2.1 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

For this example the following application parameters exist.

  • VIN = 5 V
  • VOUT = 2.5 V
  • IOUT = 5 A
  • ΔVOUT = 20 mVpk-pk
  • ΔVo_tran = ±20 mVpk-pk

Table 1. Bill of Materials, VIN = 3.3 V to 5 V, VOUT = 2.5 V, IOUT (MAX) = 5 A,
Optimized for Electrolytic Input and Output Capacitance

DESIGNATOR DESCRIPTION CASE SIZE MANUFACTURER MANUFACTURER P/N QUANTITY
U1 Power module PFM-7 Texas Instruments LMZ10505EXTTZ 1
Cin1 150 µF, 6.3 V, 18 mΩ C2, 6.0 × 3.2 × 1.8 mm Sanyo 6TPE150MIC2 1
CO1 330 µF, 6.3 V, 18 mΩ D3L, 7.3 × 4.3 × 2.8 mm Sanyo 6TPE330MIL 1
Rfbt 100 kΩ 0603 Vishay Dale CRCW0603100KFKEA 1
Rfbb 47.5 kΩ 0603 Vishay Dale CRCW060347K5FKEA 1
Rcomp 15 kΩ 0603 Vishay Dale CRCW060315K0FKEA 1
Ccomp 330 pF, ±5%, C0G, 50 V 0603 TDK C1608C0G1H331J 1
CSS 10 nF, ±10%, X7R, 16 V 0603 Murata GRM188R71C103KA01 1

Table 2. Bill of Materials, VIN = 3.3 V, VOUT = 0.8 V, IOUT (MAX) = 5 A,
Optimized for Solution Size and Transient Response(1)

DESIGNATOR DESCRIPTION CASE SIZE MANUFACTURER MANUFACTURER P/N QUANTITY
U1 Power module PFM-7 Texas Instruments LMZ10505EXTTZ 1
Cin1, CO1 47 µF, X5R, 6.3 V 1206 TDK C3216X5R0J476M 2
Rfbt 110 kΩ 0402 Vishay Dale CRCW0402100KFKED 1
Rcomp 1.0 kΩ 0402 Vishay Dale CRCW04021K00FKED 1
Ccomp 27 pF, ±5%, C0G, 50 V 0402 Murata GRM1555C1H270JZ01 1
CSS 10 nF, ±10%, X7R, 16 V 0402 Murata GRM155R71C103KA01 1
(1) In the case where the output voltage is 0.8 V, it is recommended to remove Rfbb and keep Rfbt, Rcomp, and Ccomp for a type III compensation.