ZHCSNW4 October   2022 LM5012-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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  Schottky Diode Selection
      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 Standby Mode
      3. 8.4.3 Active Mode
      4. 8.4.4 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
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Compact PCB Layout for EMI Reduction
        2. 9.4.1.2 Feedback Resistors
      2. 9.4.2 Layout Example
        1. 9.4.2.1 Thermal Considerations
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 第三方产品免责声明
      2. 10.1.2 Development Support
        1. 10.1.2.1 Custom Design With WEBENCH® Tools
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 接收文档更新通知
    4. 10.4 支持资源
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 术语表
  11. 11Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9.2.3 Application Curves

VOUT = 12 V RON = 102 kΩ LO = 22 μH
Figure 9-2 Conversion Efficiency (Log Scale)
GUID-55030F68-A02F-43D0-BC65-8E468D689BAE-low.png
VOUT = 12 V RON = 102 kΩ LO = 22 μH
Figure 9-4 Load and Line Regulation Performance
GUID-20211102-SS0I-XXJK-G7FH-TKZCCXC6Q8P4-low.png
VIN = 48 V VOUT = 12 V IOUT = 0 A
Figure 9-6 No-Load Start-Up with EN/UVLO
GUID-20220818-SS0I-TXLH-TND9-0ZWCRVLVMRL6-low.png
VIN = 48 V VOUT 12 V Load = 0 A to Short
Figure 9-8 Short-Circuit Recovery
GUID-20220304-SS0I-PQZR-GKLK-ZCHWWVFSDW2H-low.png
VIN = 48 V VOUT = 12 V IOUT = 2.5 A
Figure 9-10 Full-Load Switching
GUID-20211206-SS0I-G8VH-GGRN-T3BJ11FSXSF9-low.png
VIN = 48 VVOUT = 12 VIOUT = 3.5 A

(LM5013-Q1)

Figure 9-12 CISPR 25 Class 5 Conducted Emissions Plot, 150 kHz to 110 MHz
GUID-BED486C2-A5F9-429D-B8F7-BF892CE6BC0F-low.png
VOUT = 12 V RON = 102 kΩ LO = 22 μH
Figure 9-3 Conversion Efficiency (Linear Scale)
GUID-43FE1B46-31DE-4A7B-A943-FF93769C6DAA-low.png
VIN = 48 V VOUT = 12 V IOUT = 1.0-A to 2.5-A

(Rise/fall time = 1A/uS)
Figure 9-5 Load Step Response
GUID-20220818-SS0I-CHPB-CD1Z-RZPDD2H7FNZ1-low.png
VIN = 48 V VOUT 12 V Load = 0 A to Short
Figure 9-7 Short Circuit Applied
GUID-20211101-SS0I-S7QZ-6SHG-TB21JS4LM1MC-low.png
VIN = 48 VVOUT 12 VIOUT = 200 mA
Figure 9-9 Light-Load Switching
GUID-20211206-SS0I-BJ4T-9R1T-QHS5JDFKWV8V-low.gif
Filter used for EMC scan. Additionally, the regulator was housed in an enclosed shield.
Figure 9-11 Suggested EMC Filter for CISPR 25 Class 5 Compliance