ZHCSJ52A December   2019  – August 2021 LP875701-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 I2C Serial Bus Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Descriptions
      1. 7.3.1 Multi-Phase DC/DC Converters
        1. 7.3.1.1 Overview
        2. 7.3.1.2 Multiphase Switcher Configurations
        3. 7.3.1.3 Buck Converter Load-Current Measurement
        4. 7.3.1.4 Spread-Spectrum Mode
      2. 7.3.2 Sync Clock Functionality
      3. 7.3.3 Power-Up
      4. 7.3.4 Regulator Control
        1. 7.3.4.1 Enabling and Disabling Regulators
      5. 7.3.5 Enable and Disable Sequences
      6. 7.3.6 Device Reset Scenarios
      7. 7.3.7 Diagnosis and Protection Features
        1. 7.3.7.1 Power-Good Information (PGOOD pin)
        2. 7.3.7.2 Warnings for Diagnosis (Interrupt)
          1. 7.3.7.2.1 Output Power Limit
          2. 7.3.7.2.2 Thermal Warning
        3. 7.3.7.3 Protection (Regulator Disable)
          1. 7.3.7.3.1 Short-Circuit and Overload Protection
          2. 7.3.7.3.2 Overvoltage Protection
          3. 7.3.7.3.3 Thermal Shutdown
        4. 7.3.7.4 Fault (Power Down)
          1. 7.3.7.4.1 Undervoltage Lockout
      8. 7.3.8 GPIO Signal Operation
      9. 7.3.9 Digital Signal Filtering
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes of Operation
    5. 7.5 Programming
      1. 7.5.1 I2C-Compatible Interface
        1. 7.5.1.1 Data Validity
        2. 7.5.1.2 Start and Stop Conditions
        3. 7.5.1.3 Transferring Data
        4. 7.5.1.4 I2C-Compatible Chip Address
        5. 7.5.1.5 Auto-Increment Feature
    6. 7.6 Register Maps
      1. 7.6.1 Register Descriptions
        1.       53
        2. 7.6.1.1  DEV_REV
        3. 7.6.1.2  OTP_REV
        4. 7.6.1.3  BUCK0_CTRL1
        5. 7.6.1.4  BUCK0_DELAY
        6. 7.6.1.5  GPIO2_DELAY
        7. 7.6.1.6  GPIO3_DELAY
        8. 7.6.1.7  RESET
        9. 7.6.1.8  CONFIG
        10. 7.6.1.9  INT_TOP1
        11. 7.6.1.10 INT_TOP2
        12. 7.6.1.11 INT_BUCK_0_1
        13. 7.6.1.12 INT_BUCK_2_3
        14. 7.6.1.13 TOP_STAT
        15. 7.6.1.14 BUCK_0_1_STAT
        16. 7.6.1.15 BUCK_2_3_STAT
        17. 7.6.1.16 TOP_MASK1
        18. 7.6.1.17 TOP_MASK2
        19. 7.6.1.18 BUCK_0_1_MASK
        20. 7.6.1.19 BUCK_2_3_MASK
        21. 7.6.1.20 SEL_I_LOAD
        22. 7.6.1.21 I_LOAD_2
        23. 7.6.1.22 I_LOAD_1
        24. 7.6.1.23 PGOOD_CTRL1
        25. 7.6.1.24 PGOOD_CTRL2
        26. 7.6.1.25 PGOOD_FLT
        27. 7.6.1.26 PLL_CTRL
        28. 7.6.1.27 PIN_FUNCTION
        29. 7.6.1.28 GPIO_CONFIG
        30. 7.6.1.29 GPIO_IN
        31. 7.6.1.30 GPIO_OUT
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Inductor Selection
        2. 8.2.1.2 Input Capacitor Selection
        3. 8.2.1.3 Output Capacitor Selection
        4. 8.2.1.4 Snubber Components
        5. 8.2.1.5 Supply Filtering Components
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 术语表
  12. 12Mechanical, 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

8.2.1.4 Snubber Components

If the input voltage for the regulators is above 4 V, snubber components are needed at the switching nodes to decrease voltage spiking in the switching node and to improve EMI. The snubber capacitors C0, C1, C2, and C3 and the snubber resistors R0, R1, R2, and R3 are shown in Figure 8-1. The recommended components are shown in Table 8-4 and these component values give good performance on LP875701-Q1 EVM. The optimal resistance and capacitance values finally depend on the PCB layout.

Table 8-4 Recommended Snubber Components
MANUFACTURERPART NUMBERVALUECASE SIZEDIMENSIONS L × W x H (mm)VOLTAGE / POWER RATING
Vishay-DaleCRCW04023R90JNED3.9 Ω (5%)04021 × 0.5 × 0.462 mW
MurataGCM1555C1H391JA16390 pF (5%)04021 × 0.5 × 0.550 V
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 |