ZHCSO88 June 2021 LMR33620AP-Q1 , LMR33630AP-Q1
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2
Detailed Design Procedure
- 9.2.2.1 Custom Design With WEBENCH? Tools
- 9.2.2.2 Choosing the Switching Frequency
- 9.2.2.3 Setting the Output Voltage
- 9.2.2.4 Inductor Selection
- 9.2.2.5 Output Capacitor Selection
- 9.2.2.6 Input Capacitor Selection
- 9.2.2.7 CBOOT
- 9.2.2.8 VCC
- 9.2.2.9 CFF Selection
- 9.2.2.10 External UVLO
- 9.2.2.11 Maximum Ambient Temperature
- 9.2.3 Application Curves
- 9.3 What to Do and What Not to Do
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
9.2.3 Application Curves
Unless otherwise specified the following conditions apply: VIN = 12 V, TA = 25°C. The circuit is shown in Figure 9-27, with the appropriate BOM from Table 9-3.
| VOUT = 5 V | 400 kHz | 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 3 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 3 A | |
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
| VOUT = 3.3 V | 400 kHz | RNX Package |
| VOUT = 3.3 V | 2.1 MHz | RNX Package |
| VOUT = 5 V | IOUT = 0 A | RFBT = 1 MΩ |
| VOUT = 5 V | ?SW = 2100 kHz |
| VIN = 12 V | VOUT = 5 V | |
| tf = tr = 2 μs | IOUT = 1 A to 3 A | |
| VOUT = 3.3 V | IOUT = 0 A | RFBT = 1 MΩ |
| VOUT = 3.3 V | ?SW = 2100 kHz |
| VIN = 12 V | VOUT = 3.3V | IOUT = 1 A to 3 A |
| tf = tr = 2 μs | ||
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
| VIN = 12 V | VOUT = 5 V | IOUT = 3 A |
| ?SW = 400 kHz | RNX package | |
Rod Antenna
Figure 9-27 Circuit for Application CurvesTable 9-3 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 | 6.8 μH, 14 mΩ | LMR33630ARNX |
| 3.3 V | 2100 kHz | 43.3 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 1.2 μH, 7 mΩ | LMR33630CRNX |
| 5 V | 400 kHz | 24.9 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 8 μH, 25 mΩ | LMR33630ARNX |
| 5 V | 2100 kHz | 24.9 kΩ | 4 × 22 μF | 2 × 4.7 μF + 2 × 100 nF | 1.5 μH, 8.2 mΩ | LMR33630CRNX |
(1) The values in this table were selected to enhance certain performance criteria
and may not represent typical values.
Figure 9-28 Typical Input EMI FilterFilter Used Only for EMI Measurements Found in Application Curves