JAJSB26I February   2010  – March 2022 LMZ12010

PRODUCTION DATA  

  1. 特長
  2. アプリケーション
  3. 概要
  4. Revision History
  5. Pin Configuration and Functions
  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 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Output Overvoltage Protection
      2. 7.3.2 Current Limit
      3. 7.3.3 Thermal Protection
      4. 7.3.4 Prebiased Start-Up
    4. 7.4 Device Functional Modes
      1. 7.4.1 Discontinuous Conduction and Continuous Conduction Modes
  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 Enable Divider, RENT, RENB, and RENH Selection
        2. 8.2.2.2 Output Voltage Selection
        3. 8.2.2.3 Soft-Start Capacitor Selection
        4. 8.2.2.4 Tracking Supply Divider Option
        5. 8.2.2.5 COUT Selection
        6. 8.2.2.6 CIN Selection
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 Power Dissipation and Thermal Considerations
    4. 10.4 Power Module SMT Guidelines
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 サポート・リソース
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, 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

Typical Characteristics

Unless otherwise specified, the following conditions apply: VIN = 12 V; CIN = three × 10-μF + 47-nF X7R Ceramic; COUT = two × 330-μF Specialty Polymer + 47-μF Ceramic + 47-nF Ceramic; CFF = 4.7 nF; TA = 25°C for waveforms. All indicated temperatures are ambient.

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Figure 6-1 Efficiency 5-V Output at 25°C
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Figure 6-3 Efficiency 3.3-V Output at 25°C
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Figure 6-5 Efficiency 2.5-V Output at 25°C
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Figure 6-7 Efficiency 1.8-V Output at 25°C
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Figure 6-9 Efficiency 1.5-V Output at 25°C
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Figure 6-11 Efficiency 1.2-V Output at 25°C
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Figure 6-13 Efficiency 1-V Output at 25°C
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Figure 6-15 Efficiency 5-V Output at 85°C
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Figure 6-17 Efficiency 3.3-V Output at 85°C
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Figure 6-19 Efficiency 2.5-V Output at 85°C
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Figure 6-21 Efficiency 1.8-V Output at 85°C
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Figure 6-23 Efficiency 1.5-V Output at 85°C
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Figure 6-25 Efficiency 1.2-V Output at 85°C
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Figure 6-27 Efficiency 1-V Output at 85°C
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VOUT = 3.3 V
Figure 6-29 Normalized Line and Load Regulation
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VIN = 12 V, VOUT = 3.3 V
Figure 6-31 Thermal Derating
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12 VIN, 5 VOUT at Full Load, BW = 20 MHz
Figure 6-33 Output Ripple
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12 VIN, 3.3 VOUT at Full Load, BW = 20 MHz
Figure 6-35 Output Ripple
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12 VIN, 1.2 VOUT at Full Load, BW = 20 MHz
Figure 6-37 Output Ripple
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12 VIN, 5 VOUT 1- to 10-A Step
Figure 6-39 Transient Response
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12 VIN, 1.2 VOUT 1- to 10-A Step
Figure 6-41 Transient Response
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No CSS
Figure 6-43 3.3-VOUT Soft Start
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Figure 6-2 Dissipation 5-V Output at 25°C
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Figure 6-4 Dissipation 3.3-V Output at 25°C
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Figure 6-6 Dissipation 2.5-V Output at 25°C
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Figure 6-8 Dissipation 1.8-V Output at 25°C
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Figure 6-10 Dissipation 1.5-V Output at 25°C
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Figure 6-12 Dissipation 1.2-V Output at 25°C
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Figure 6-14 Dissipation 1-V Output at 25°C
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Figure 6-16 Dissipation 5-V Output at 85°C
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Figure 6-18 Dissipation 3.3-V Output at 85°C
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Figure 6-20 Dissipation 2.5-V Output at 85°C
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Figure 6-22 Dissipation 1.8-V Output at 85°C
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Figure 6-24 Dissipation 1.5-V Output at 85°C
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Figure 6-26 Dissipation 1.2-V Output at 85°C
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Figure 6-28 Dissipation 1-V Output at 85°C
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VIN = 12 V, VOUT = 5 V
Figure 6-30 Thermal Derating
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Figure 6-32 RθJA vs Copper Heat Sinking Area
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12 VIN, 5 VOUT at Full Load, BW = 250 MHz
Figure 6-34 Output Ripple
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12 VIN, 3.3 VOUT at Full Load, BW = 250 MHz
Figure 6-36 Output Ripple
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12 VIN, 1.2 VOUT at Full Load, BW = 250 MHz
Figure 6-38 Output Ripple
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12 VIN, 3.3 VOUT 1- to 10-A Step
Figure 6-40 Transient Response
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Figure 6-42 Short Circuit Current vs Input Voltage
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CSS = 0.47 µF
Figure 6-44 3.3-VOUT Soft Start