ZHCSP51B december 2020 – may 2023 LMR43610 , LMR43620
PRODUCTION DATA
- 1
- 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
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Enable, Start-Up, and Shutdown
- 8.3.2 External CLK SYNC (with MODE/SYNC)
- 8.3.3 Adjustable Switching Frequency (with RT)
- 8.3.4 Power-Good Output Operation
- 8.3.5 Internal LDO, VCC, and VOUT/FB Input
- 8.3.6 Bootstrap Voltage and VBOOT-UVLO (BOOT Terminal)
- 8.3.7 Output Voltage Selection
- 8.3.8 Soft Start and Recovery from Dropout
- 8.3.9 Current Limit and Short Circuit
- 8.3.10 Thermal Shutdown
- 8.3.11 Input Supply Current
- 8.4 Device Functional Modes
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2 Detailed Design Procedure
- 9.2.3 Application Curves
- 9.3 Best Design Practices
- 9.4 Power Supply Recommendations
- 9.5 Layout
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- RPE|9
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- RPE|9
訂購信息
9.2.3 Application Curves
Unless otherwise specified the following conditions apply: VIN = 24 V, TA = 25°C.
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed | IOUT = 100 mA |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed | IOUT = 1 A to 2 A,1 A/μs |
| LMR43620MB5 | VOUT = 5 V | auto mode |
| Fixed | VIN = 24 V | IOUT = 2 A to Short Circuit |
| LMR43620MB5 | VOUT = 5 V | auto mode |
| Fixed | VIN = 24 V | IOUT = Short Circuit to 2 A |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed | VIN = 24 V | IOUT = Open |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz |
| Fixed | VIN = 24 V | IOUT = 2 A |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz |
| Fixed | VIN = 24 V | IOUT = 2 A |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed | IOUT = 0 A to 2 A,1 A/μs |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (FPWM) |
| Fixed | IOUT = 0 A to 2 A,1 A/μs |
| LMR43620MB5 | VOUT = 5 V | auto mode |
| Fixed | VIN = 24 V | IOUT = Short Circuit |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz (auto) |
| Fixed | VIN = 24 V | IOUT = 2 A |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz |
| Fixed | VIN = 12 V | IOUT = 2 A |
| LMR43620MB5 | VOUT = 5 V | fSW = 1 MHz |
| Fixed | VIN = 24 V | IOUT = 2 A |
Figure 9-20 Typical Input EMI Filter
A. The RT pin
is factory-set for externally adjustable switching frequency RT variants only. Tying this
pin to VCC results in 1-MHz switching frequency. See Section 8.3.3 for details.
B. The
MODE/SYNC pin is factory-set for fixed frequency MODE/SYNC variants only. Tying this pin
to GND results in auto mode. See Section 8.3.2 for details.
Figure 9-21 Example Application CircuitTable 9-7 BOM for Typical Application
Curves
| U1 | ?SW | VOUT | L | NOMINAL COUT (RATED CAPACITANCE) |
RFBT | RFBB | CFF |
|---|---|---|---|---|---|---|---|
| LMR43620MB5RPER | 1000 kHz | 5 V Fixed | 3.3 μH, 26 mΩ | 2 × 22 μF | 0 Ω | DNP | DNP |