ZHCSNT4I February 2006 – May 2021 LM5009
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Output Resistor Divider Selection
- 8.2.2.2 Frequency Selection
- 8.2.2.3 Inductor Selection
- 8.2.2.4 VCC and Bootstrap Capacitor
- 8.2.2.5 Output Capacitor Selection
- 8.2.2.6 Current Limit Off-Timer Setting
- 8.2.2.7 Rectifier Diode Selection
- 8.2.2.8 Input Capacitor Selection
- 8.2.2.9 Ripple Configuration
- 8.2.3 Application Curves
- 8.3 Do's and Don'ts
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
8.2 Typical Application
A typical buck application circuit with the LM5009 is shown in Figure 8-1. The circuit can operate over a wide input voltage range of 9.5 V to 95 V and provides a stable output of 10 V over the load current being varied from 50 mA to 200 mA. The resulting curves are shown in Figure 8-2 through Figure 8-5.
Figure 8-1 Typical Buck Application Circuit