ZHCSGN3A September   2015  – October  2015 LM74670-Q1

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
  4. 修订历史记录
  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 During T0
      2. 7.3.2 During T1
      3. 7.3.3 Pin Operation
        1. 7.3.3.1 Anode and Cathode Pins
        2. 7.3.3.2 VcapH and VcapL Pins
        3. 7.3.3.3 Gate Drive Pin
        4. 7.3.3.4 Gate Pull Down Pin
    4. 7.4 Device Functional Modes
      1. 7.4.1 Duty Cycle Calculation
      2. 7.4.2 Startup Voltage
  8. Application and Implementation
    1. 8.1 Typical Rectifier Application
      1. 8.1.1 Design Requirements
      2. 8.1.2 Detailed Design Procedure
        1. 8.1.2.1 Design Considerations
        2. 8.1.2.2 Capacitor Selection
        3. 8.1.2.3 MOSFET Selection
      3. 8.1.3 Application Curves
    2. 8.2 Design Requirements
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 社区资源
    2. 11.2 商标
    3. 11.3 静电放电警告
    4. 11.4 Glossary
  12. 12机械、封装和可订购信息

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

Pin Configuration and Functions

DGK Package
8-Pin VSSOP
Top View
LM74670-Q1 pin_diagram_snosd08.gif

Pin Functions

PIN NO. NAME I/O DESCRIPTION
1 VcapL Charge Pump Output, connect to an external charge pump capacitor
2 Gate Pull Down Connect to the gate of the external MOSFET for fast turn OFF in the case of reverse polarity
3 NC No connect. Leave floating or connect to Anode pin
4 Anode Anode of the diode, connect to source of the external MOSFET
5 NC No connect. Leave floating or connect to gate drive pin
6 Gate Drive Gate Drive output, Connect to the Gate of the external MOSFET
7 VcapH Charge Pump Output, connect to an external charge pump capacitor
8 Cathode Cathode of the diode, connect to Drain of the external MOSFET