ZHCSRT4 august   2023 LV5144

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Pin Configuration and Functions
    1. 6.1 Wettable Flanks
  8. 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
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Input Range (VIN)
      2. 8.3.2  Output Voltage Setpoint and Accuracy (FB)
      3. 8.3.3  High-Voltage Bias Supply Regulator (VCC)
      4. 8.3.4  Precision Enable (EN/UVLO)
      5. 8.3.5  Power Good Monitor (PGOOD)
      6. 8.3.6  Switching Frequency (RT, SYNCIN)
        1. 8.3.6.1 Frequency Adjust
        2. 8.3.6.2 Clock Synchronization
      7. 8.3.7  Configurable Soft Start (SS/TRK)
        1. 8.3.7.1 Tracking
      8. 8.3.8  Voltage-Mode Control (COMP)
      9. 8.3.9  Gate Drivers (LO, HO)
      10. 8.3.10 Current Sensing and Overcurrent Protection (ILIM)
      11. 8.3.11 OCP Duty Cycle Limiter
    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 Diode Emulation Mode
      5. 8.4.5 Thermal Shutdown
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Design and Implementation
      2. 9.1.2 Power Train Components
        1. 9.1.2.1 Inductor
        2. 9.1.2.2 Output Capacitors
        3. 9.1.2.3 Input Capacitors
        4. 9.1.2.4 Power MOSFETs
      3. 9.1.3 Control Loop Compensation
      4. 9.1.4 EMI Filter Design
    2. 9.2 Typical Applications
      1. 9.2.1 Design 1 – 12-A High-Efficiency Synchronous Buck DC/DC Regulator
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Design 2 – High Density, 12-V, 8-A Rail From 48-V Telecom Power
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Power Stage Layout
        2. 9.4.1.2 Gate Drive Layout
        3. 9.4.1.3 PWM Controller Layout
        4. 9.4.1.4 Thermal Design and Layout
        5. 9.4.1.5 Ground Plane Design
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 第三方米6体育平台手机版_好二三四免责声明
      2. 10.1.2 Development Support
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
        1. 10.2.1.1 PCB Layout Resources
        2. 10.2.1.2 Thermal Design Resources
    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 静电放电警告
    7. 10.7 术语表
  12. 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

7.6 Typical Characteristics

VVIN = 48 V, RRT = 25 kΩ, SYNCIN tied to VCC, EN/UVLO tied to VIN (unless otherwise noted).

GUID-0FB37D88-28BA-44EB-8C13-65094FD382D3-low.gif
VOUT = 5 VFSW = 300 kHz
See Figure 9-5RRT = 33.2 kΩ
Figure 7-1 Efficiency vs Load, CCM
GUID-754BCF86-5190-4390-8C05-D2B0602D6690-low.gif
Figure 7-3 FB Voltage vs Junction Temperature
GUID-A7A8154D-8041-4E07-A562-88CF64C69DB1-low.gif
VSW = 0 VVEN/UVLO = 0 V
Figure 7-5 IQ-SHD vs Input Voltage
GUID-0056C401-6DAB-4993-970D-2EB47AF95990-low.gif
VSW = 0 VVEN/UVLO = VVINVSS/TRK = 0 V
Figure 7-7 IQ-OPERATING (Nonswitching) vs Input Voltage
GUID-6F664E1B-A32F-4289-A1CE-870E9AEF0E16-low.gif
VSW = 0 VVVCC = VBST = VILIMVFB = 0 V
Figure 7-9 VIN Quiescent Current with External VCC Applied
GUID-9D1D7559-1614-44E4-BDE5-3ECDB0A67A1A-low.gif
VSW = 0 V
Figure 7-11 Deadtime vs Junction Temperature
GUID-A73BFCE7-F875-42FF-91EC-1A00C24DE02F-low.gif
Figure 7-13 BST UVLO Thresholds vs Junction Temperature
GUID-8FDBB467-EAC7-4129-A412-D898E26F7CAC-low.gif
Figure 7-15 PGOOD OVP Thresholds vs Junction Temperature
GUID-D7F09C06-7E66-43FA-8490-9B1538FFEE0F-low.gif
 
Figure 7-17 EN Standby Thresholds vs Junction Temperature
GUID-0041B7F3-334B-42E3-87A7-E807604A6319-low.gif
RRT = 25 kΩ
Figure 7-19 Oscillator Frequency vs Junction Temperature
GUID-9621C281-0563-44AF-9722-FC0B0E54D9B3-low.gif
Figure 7-21 Gate Driver Peak Current vs VCC Voltage
GUID-0DD160BC-D011-4BB1-BCB4-C283C1FF1918-low.gif
 
Figure 7-23 LO Driver Resistance vs VCC Voltage
GUID-ADB3623E-F173-439D-8369-B4FFC1C9BFD9-low.gif
VIN = 5.5 V
Figure 7-25 VCC vs ICC Characteristic
GUID-5BC574C0-6962-4E69-AABA-E6286E2F64CA-low.gif
Figure 7-27 BST Diode Forward Voltage vs Current
GUID-D8D3ECB5-4141-45EF-AE46-E34CDF7CCAA2-low.gif
VOUT = 12 V FSW = 400 kHz
See Figure 9-16RRT = 24.9 kΩ
Figure 7-2 Efficiency vs Load, CCM
GUID-8896FBC1-8207-44A1-90C7-FF9A92E551A5-low.gif
Figure 7-4 tON(min) and tOFF(min) vs Junction Temperature
GUID-76A5BBF2-0391-4673-9537-2F3C1A4A4294-low.gif
VSW = 0 VVEN/UVLO = 1 V
Figure 7-6 IQ-STANDBY vs Input Voltage
GUID-CE861743-BD57-4426-8C38-925C7F28A8D8-low.gif
VSW = 0 VHO, LO Open
Figure 7-8 IQ-OPERATING (Switching) vs Input Voltage
GUID-0CB09A28-2A06-4F57-A9DE-23E2A685B106-low.gif
Figure 7-10 ILIM Current Source vs Junction Temperature
GUID-0DF22F91-5084-49E7-B13D-F75E0B24FC18-low.gif
Figure 7-12 VCC UVLO Thresholds vs Junction Temperature
GUID-732FE9BB-1D36-4140-A234-A886940C57FD-low.gif
Figure 7-14 PGOOD UVP Thresholds vs Junction Temperature
GUID-64714FB6-6D24-41B7-930B-9625AC160EF6-low.gif
Figure 7-16 EN/UVLO Threshold vs Junction Temperature
GUID-B78238A6-506F-4E0E-9721-F5E57F24C2B4-low.gif
VSW = 0 V
Figure 7-18 Oscillator Frequency vs RT Resistance
GUID-C0CCADAF-F2EF-4BA0-B380-0DCE1B5BDC46-low.gif
RRT = 10 kΩ
Figure 7-20 Oscillator Frequency vs Junction Temperature
GUID-30530A73-E573-4817-9144-4326B6AFA64F-low.gif
Figure 7-22 HO Driver Resistance vs VCC Voltage
GUID-4DB1A561-2729-4E17-9EBA-AB8FF1B52C72-low.gif
VSS/TRK = 0 V
Figure 7-24 VCC Voltage vs Input Voltage
GUID-20B6D02B-997D-4102-8A96-2B50407E6CD2-low.gif
VIN = 12 V
Figure 7-26 VCC vs ICC Characteristic
GUID-09172DAD-F1E3-4AF3-A833-5A4B4FE53905-low.gif
Figure 7-28 SS/TRK Current Source vs Junction Temperature
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP | 米乐app下载官网（中国）|ios|Android/通用版APP最新版 | 米乐|米乐·M6（中国大陆）官方网站 | 千亿体育登陆地址 | 华体会体育（中国）HTH·官方网站 | 千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载 | 18新利网v1.2.5|中国官方网站 | bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】 | 千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装 |