ZHCSBX0C december   2013  – may 2023 TPS65261 , TPS65261-1

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Revision History
  6. Pin Configuration and Functions
  7. 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
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Adjusting the Output Voltage
      2. 7.3.2  Power Failure Detector
      3. 7.3.3  Enable and Adjusting Undervoltage Lockout
      4. 7.3.4  Soft-Start Time
      5. 7.3.5  Power Up Sequencing
        1. 7.3.5.1 External Power Sequencing
        2. 7.3.5.2 Automatic Power Sequencing
      6. 7.3.6  V7V Low Dropout Regulator and Bootstrap
      7. 7.3.7  Out-of-Phase Operation
      8. 7.3.8  Output Overvoltage Protection (OVP)
      9. 7.3.9  Slope Compensation
      10. 7.3.10 Overcurrent Protection
        1. 7.3.10.1 High-side MOSFET Overcurrent Protection
        2. 7.3.10.2 Low-side MOSFET Overcurrent Protection
      11. 7.3.11 Power Good
      12. 7.3.12 Adjustable Switching Frequency
      13. 7.3.13 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse Skipping MODE (PSM)
  9. 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 Output Inductor Selection
        2. 8.2.2.2 Output Capacitor Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Loop Compensation
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Parts
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Mechanical, 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

Typical Characteristics

TA = 25°C, VIN = 12 V, VOUT1 = 1.2 V, VOUT2 = 3.3 V, VOUT3 = 1.8 V, fSW = 600 kHz (unless otherwise noted)

GUID-58D643DA-0C78-4A36-8031-9719898D6019-low.pngFigure 6-1 BUCK 1 Efficiency
GUID-2F558E2F-8342-4F85-820B-C61B0A1BA311-low.png
VOUT = 1.2 V
Figure 6-3 BUCK1, PSM Mode, Load Regulation
GUID-AADCA770-A23E-4703-9454-7D673730013F-low.png
VOUT = 1.8 V
Figure 6-5 BUCK3, PSM Mode, Load Regulation
GUID-7B7A7DC9-782D-42A8-BA4A-3F2FB4DDE0EE-low.png
VOUT = 3.3 V
Figure 6-7 BUCK2, PSM MODE, LINE REGULATION
GUID-336929A1-EDF2-4702-9114-0F21ADB9A57E-low.pngFigure 6-9 Voltage Reference vs Temperature
GUID-AEBD85D2-F278-4918-A93B-4A7BBF29BAB8-low.png
VIN = 12 V
Figure 6-11 Shutdown Quiescent vs Temperature
GUID-6322DC93-C996-48F3-A21B-C85F1A50261E-low.png
VIN = 12 VEN = 1.5 V
Figure 6-13 EN Pin Pullup Current vs Temperature, EN = 1.5 V
GUID-2E360205-7C69-492C-BAEF-B6A785B738E6-low.png
VIN = 12 V
Figure 6-15 EN Pin Threshold Falling vs Temperature
GUID-02265987-CA8E-46D0-BBF2-53A517D21827-low.png
VIN = 12 V
Figure 6-17 Buck1 High-Side Current Limit vs Temperature
GUID-99FD5DC2-252A-45E6-9FE6-729FA52B5C03-low.png
VIN = 12 V
Figure 6-19 Buck3 High-Side Current Limit vs Temperature
GUID-40BF89C4-0A5C-44A6-9A79-BAAEE7028115-low.pngFigure 6-2 BUCK 2 Efficiency
GUID-24DBB4B4-BDA8-4EBE-A6E1-4539A900BA8F-low.png
VOUT = 3.3 V
Figure 6-4 BUCK2, PSM Mode, Load Regulation
GUID-D9539BF9-BB0A-4BAA-8788-0014D38797C4-low.png
VOUT = 1.2 V
Figure 6-6 BUCK1, PSM Mode, Line Regulation
GUID-51BA85CF-788C-4B99-BFD9-9CFE19C785F4-low.png
VOUT = 1.8 V
Figure 6-8 BUCK3, PSM Mode, Line Regulation
GUID-17C1EA52-CAFE-4204-B64B-3AF898DAD8BA-low.gif
ROSC = 73.2 kΩ
Figure 6-10 Oscillator Frequency vs Temperature
GUID-03AB1C9F-7B11-4826-A431-6FDDCF9B12C9-low.png
VIN = 12 VEN = 1 V
Figure 6-12 EN Pin Pull-Up Current vs Temperature, EN=1.0V
GUID-D222B07B-579B-41EF-B606-5E52CA412026-low.png
VIN = 12 V
Figure 6-14 EN Pin Threshold Raising vs Temperature
GUID-D3CCB043-AD1A-48B5-BDB1-83E2AD0AA473-low.png
VIN = 12 V
Figure 6-16 SS Pin Charge Current vs Temperature
GUID-1AEB268B-40B5-47C6-8E33-BF6C3629C766-low.png
VIN = 12 V
Figure 6-18 Buck2 High-Side Current Limit vs Temperature
GUID-1F33F7F8-AA2D-4741-B4B2-494AF39B5F80-low.pngFigure 6-20 VDIV Pin Threshold vs Temperature