ZHCSIM4H April 2009 – November 2014 LM25011 , LM25011-Q1
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
8.2.2.1 Option A: Lowest Cost Configuration
In this configuration R1 is installed in series with the output capacitor (COUT) as shown in Figure 22. The ripple current of the inductor passes through R1, generating a ripple voltage at VOUT. The minimum value for R1 is:
Equation 23. 
where ΔI is the minimum ripple current amplitude, which occurs at minimum VIN, and VRIPPLE is the peak to peak ripple voltage injected at the FB pin.
Figure 22. Option A – Lowest Cost Ripple Configuration