ZHCSEQ3D February 2016 – December 2022 LM5165
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 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 Integrated Power MOSFETs
- 7.3.2 Selectable PFM or COT Mode Converter Operation
- 7.3.3 COT Mode Light-Load Operation
- 7.3.4 Low Dropout Operation and 100% Duty Cycle Mode
- 7.3.5 Adjustable Output Voltage (FB)
- 7.3.6 Adjustable Current Limit
- 7.3.7 Precision Enable (EN) and Hysteresis (HYS)
- 7.3.8 Power Good (PGOOD)
- 7.3.9 Configurable Soft Start (SS)
- 7.3.10 Thermal Shutdown
- 7.4 Device Functional Modes
-
8 Applications and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 Design 1: Wide VIN, Low IQ COT Converter Rated at 5 V, 150 mA
- 8.2.2 Design 2: Small Solution Size PFM Converter Rated at 3.3 V, 50 mA
- 8.2.3 Design 3: High Density 12-V, 75-mA PFM Converter
- 8.2.4 Design 4: 3.3-V, 150-mA COT Converter With High Efficiency
- 8.2.5 Design 5: 15-V, 150-mA, 600-kHz COT Converter
- 8.3 Power Supply Recommendations
- 8.4 Layout
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
6.7 Typical Characteristics
Unless otherwise specified, VIN = 12 V, VOUT = 5 V. Please refer to Typical Applications for circuit designs.
| 5-V, 25-mA Design | LF = 470 μH COUT = 47 μF |
FSW(nom) = 100 kHz RILIM ≥ 100 kΩ |
| See schematic, Figure 8-14 |
LF = 47 μH COUT = 10 μF |
FSW(nom) = 350 kHz RILIM = 56.2 kΩ |
| See schematic, Figure 8-21 |
LF = 47 μH COUT = 10 μF |
FSW(nom) = 500 kHz RILIM = 24.9 kΩ |
| LM5165X |
| RRT = 75 kΩ |
| See schematic, Figure 8-1 |
LF = 220 μH COUT = 22 μF |
FSW(nom) = 230 kHz RRT = 133 kΩ |
| See schematic, Figure 8-26 |
LF = 150 μH COUT = 22 μF |
FSW(nom) = 160 kHz RRT = 121 kΩ |
| See schematic, Figure 8-29 |
LF = 150 μH COUT = 10 μF |
FSW(nom) = 600 kHz RRT = 143 kΩ |
| LM5165Y |
| RRT = 75 kΩ |
