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

9.3.1 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output With Optimized Ripple and Transient Response

The compensation for each solution was optimized to work over the stated input range. Many applications have a fixed input voltage rail. It is possible to modify the compensation to obtain a faster transient response for a given input voltage operating point. This schematic is intended to serve as a helpful starting point towards an optimized design.

LMZ10505EXT 30118381.gifFigure 26. Schematic for 2.5-V Output Based on 3.3-V to 5-V Input

Table 5. Bill of Materials, VIN = 3.3 V to 5 V, VOUT = 2.5 V, IOUT (MAX) = 5 A,
Optimized for Low Input and Output Ripple Voltage and Fast Transient Response

DESIGNATOR DESCRIPTION CASE SIZE MANUFACTURER MANUFACTURER P/N QUANTITY
U1 Power module PFM-7 Texas Instruments LMZ10505EXTTZ 1
Cin1 22 µF, X5R, 10 V 1210 AVX 1210ZD226MAT 2
Cin2 220 µF, 10 V, AL-Elec E Panasonic EEE1AA221AP 1(1)
CO1 4.7 µF, X5R, 10 V 0805 AVX 0805ZD475MAT 1(1)
CO2 22 µF, X5R, 6.3 V 1206 AVX 12066D226MAT 1(1)
CO3 100 µF, X5R, 6.3 V 1812 AVX 18126D107MAT 1
Rfbt 75 kΩ 0402 Vishay Dale CRCW040275K0FKED 1
Rfbb 34.8 kΩ 0402 Vishay Dale CRCW040234K8FKED 1
Rcomp 1.0 kΩ 0402 Vishay Dale CRCW04021K00FKED 1
Ccomp 100 pF, ±5%, C0G, 50 V 0402 Murata GRM1555C1H101JZ01 1
CSS 10 nF, ±10%, X7R, 16 V 0402 Murata GRM155R71C103KA01 1
(1) Optional components, include for low input and output voltage ripple.

Table 6. Output Voltage Setting (Rfbt = 75 kΩ)

VOUT Rfbb
2.5 V 34.8 kΩ
1.8 V 59 kΩ
1.5 V 84.5 kΩ
1.2 V 150 kΩ
0.9 V 590 kΩ