ZHCSIU0D February 2000 – September 2018 LM4051-N
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
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
- DBZ|3
散热焊盘机械数据 (封装 | 引脚)
9.2.2.2 Detailed Design Procedure
In order to program the cathode voltage to a regulated voltage a resistive bridge must be shunted between the cathode and anode pins with the mid point tied to the reference pin. This can be seen in Figure 20, with R1 & R2 being the resistive bridge. The cathode/output voltage in the shunt regulator configuration can be approximated by the equation shown in Equation 7. The cathode voltage can be more accurately determined by taking in to account the cathode current shown in equation Equation 8.
In order for this equation to be valid, LM4051-ADJ must be fully biased so that it has enough open loop gain to mitigate any gain error. This can be done be meeting the IRMIN denoted in LM4051-ADJ Electrical Characteristics.