Overview
The LM22675MR-5.0/NOPB is a high-efficiency step-down (buck) switching regulator produced by Texas Instruments. This regulator is part of the SIMPLE SWITCHER® family and is designed to provide all the necessary functions for an efficient high voltage step-down regulator using a minimum of external components. It incorporates a 42 V N-channel MOSFET switch capable of providing up to 1 A of load current, making it suitable for a wide range of applications. The regulator features excellent line and load regulation, high efficiency (> 90%), and a switching frequency of 500 kHz, which allows for small external components and good transient response.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5 V to 42 V |
| Output Voltage | Fixed: 5 V, Adjustable: as low as 1.285 V |
| Output Current | Up to 1 A |
| Switching Frequency | 500 kHz |
| Operating Junction Temperature Range | -40°C to 125°C |
| Package Type | HSOIC (DDA) with 8 pins |
| Package Quantity | Carrier: 95, Tube |
| Feedback Reference Accuracy | ±1.5% |
| Quiescent Current (Typ) | 3.4 mA |
| Duty Cycle (Max) | 90% |
| MOSFET Resistance | 200 mΩ N-Channel |
Key Features
- Wide Input Voltage Range: 4.5 V to 42 V
- Internally Compensated Voltage Mode Control
- Stable with Low ESR Ceramic Capacitors
- 200 mΩ N-Channel MOSFET
- Output Voltage Options: Fixed (5 V) and Adjustable (as low as 1.285 V)
- ±1.5% Feedback Reference Accuracy
- Switching Frequency of 500 kHz
- Precision Enable Pin
- Integrated Boot-Strap Diode and Soft-Start
- Fully WEBENCH® Enabled
- Step-Down and Inverting Buck-Boost Applications
- AEC-Q100 Grade 1 Qualified for Automotive Use (LM22675Q)
- SO PowerPAD-8 (Exposed Pad) Package
Applications
The LM22675MR-5.0/NOPB is suitable for various applications requiring efficient high voltage step-down regulation. These include:
- Automotive systems (AEC-Q100 Grade 1 Qualified for LM22675Q)
- Industrial power supplies
- Telecommunications equipment
- Consumer electronics
- Step-Down and Inverting Buck-Boost configurations
Q & A
- What is the input voltage range of the LM22675MR-5.0/NOPB?
The input voltage range is from 4.5 V to 42 V. - What are the output voltage options for this regulator?
The output voltage can be fixed at 5 V or adjustable as low as 1.285 V. - What is the maximum output current of the LM22675MR-5.0/NOPB?
The maximum output current is up to 1 A. - What is the switching frequency of this regulator?
The switching frequency is 500 kHz. - What is the operating junction temperature range of the LM22675MR-5.0/NOPB?
The operating junction temperature range is -40°C to 125°C. - What type of package does the LM22675MR-5.0/NOPB come in?
The regulator comes in an HSOIC (DDA) package with 8 pins. - Is the LM22675MR-5.0/NOPB RoHS compliant?
Yes, it is RoHS compliant. - What are some key features of the LM22675MR-5.0/NOPB?
Key features include internally compensated voltage mode control, precision enable pin, integrated boot-strap diode, and soft-start. - Can the LM22675MR-5.0/NOPB be used in automotive applications?
Yes, the LM22675Q version is AEC-Q100 Grade 1 Qualified for automotive use. - What design tools are available for the LM22675MR-5.0/NOPB?
The regulator is fully WEBENCH® enabled, which includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards.
