ZHCSF95C December 2015 – February 2018 LMR23610
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
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Fixed Frequency Peak Current Mode Control
- 7.3.2 Adjustable Output Voltage
- 7.3.3 EN/SYNC
- 7.3.4 VCC, UVLO
- 7.3.5 Minimum ON-Time, Minimum OFF-Time and Frequency Foldback at Dropout Conditions
- 7.3.6 Internal Compensation and CFF
- 7.3.7 Bootstrap Voltage (BOOT)
- 7.3.8 Overcurrent and Short-Circuit Protection
- 7.3.9 Thermal Shutdown
- 7.4 Device Functional Modes
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design With WEBENCH® Tools
- 8.2.2.2 Output Voltage Setpoint
- 8.2.2.3 Switching Frequency
- 8.2.2.4 Inductor Selection
- 8.2.2.5 Output Capacitor Selection
- 8.2.2.6 Feed-Forward Capacitor
- 8.2.2.7 Input Capacitor Selection
- 8.2.2.8 Bootstrap Capacitor Selection
- 8.2.2.9 VCC Capacitor Selection
- 8.2.2.10 Undervoltage Lockout Setpoint
- 8.2.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
8.2.2.2 Output Voltage Setpoint
The output voltage of LMR23610 is externally adjustable using a resistor divider network. The divider network is comprised of top feedback resistor RFBT and bottom feedback resistor RFBB. Equation 10 is used to determine the output voltage:
Equation 10. 
Choose the value of RFBB to be 22.1 kΩ. With the desired output voltage set to 5 V and the VREF = 1 V, the RFBB value can then be calculated using Equation 10. The formula yields to a value 88.7 kΩ.