ZHCSIE9C June 2018 – October 2020 LMR33620-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
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design With WEBENCH? Tools
- 8.2.2.2 Choosing the Switching Frequency
- 8.2.2.3 Setting the Output Voltage
- 8.2.2.4 Inductor Selection
- 8.2.2.5 Output Capacitor Selection
- 8.2.2.6 Input Capacitor Selection
- 8.2.2.7 CBOOT
- 8.2.2.8 VCC
- 8.2.2.9 CFF Selection
- 8.2.2.10 External UVLO
- 8.2.2.11 Maximum Ambient Temperature
- 8.2.3 Application Curves
- 8.3 What to Do and What Not to Do
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
封裝選項
請參考 PDF 數據表獲取器件具體的封裝圖。
機械數據 (封裝 | 引腳)
- RNX|12
散熱焊盤機械數據 (封裝 | 引腳)
- RNX|12
訂購信息
8.2.3 Application Curves
Unless otherwise specified the following conditions apply: VIN = 12 V, TA = 25°C. The circuit is shown in Figure 8-35, with the appropriate BOM from Table 8-3.
| VOUT = 5 V | 400 kHz | RNX Package |
| VOUT = 5 V | 400 kHz | RNX Package |
| VOUT = 5 V | 1.4 MHz | RNX Package |
| VOUT = 5 V | 2.1 MHz | RNX Package |
| VOUT = 5 V |
| VOUT = 5 V | ?SW = 400 kHz | |
| VIN = 12 V | VOUT = 5 V |
| tf = tr = 2 μs | IOUT = 0 A to 2 A |
| VOUT = 3.3 V |
| VOUT = 3.3 V | ?SW = 400 kHz | |
| VIN = 12 V | VOUT = 3.3 V |
| tf = tr = 2 μs | IOUT = 0 A to 2 A |
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
| VOUT = 3.3 V | 400 kHz | RNX Package |
| VOUT = 3.3 V | 400 kHz | RNX Package |
| VOUT = 3.3 V | 1.4 MHz | RNX Package |
| VOUT = 3.3 V | 2.1 MHz | RNX Package |
| VOUT = 5 V | RFBT = 1 MΩ | IOUT = 0 A |
| VOUT = 5 V | ?SW = 2100 kHz |
| VIN = 12 V | VOUT = 5 V |
| tf = tr = 2 μs | IOUT = 1 A to 2 A |
| VOUT = 3.3 V | IOUT = 0 A | RFBT = 1 MΩ |
| VOUT = 3.3 V | ?SW = 2100 kHz | L = 1.2 μH |
| VIN = 12 V | VOUT = 3.3 V | IOUT = 1 A to 2 A |
| tf = tr = 2 μs | ||
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 2 A |
| ?SW = 400 kHz | RNX package | |
Figure 8-35 Circuit for Application CurvesTable 8-3 BOM for Typical Application Curves RNX Package(1)
| VOUT | FREQUENCY | RFBB | COUT | CIN + CHF | L | U1 |
|---|---|---|---|---|---|---|
| 3.3 V | 400 kHz | 43.3 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 4.7 μH, 28 mΩ | LMR33620ARNX |
| 3.3 V | 1400 KHz | 43.3 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 2.2 μH, 11.4 mΩ | LMR33620BRNX |
| 3.3 V | 2100 kHz | 43.3 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 2.2 μH, 11.4 mΩ | LMR33620CRNX |
| 5 V | 400 kHz | 24.9 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 6.8 μH, 14 mΩ | LMR33620ARNX |
| 5 V | 1400 KHz | 24.9 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 2.2 μH, 11.4 mΩ | LMR33620BRNX |
| 5 V | 2100 kHz | 24.9 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 2.2 μH, 11.4 mΩ | LMR33620CRNX |
(1) The values in this table were selected to enhance certain performance criteria
and may not represent typical values.