Overview
The LM22675MRX-ADJ/NOPB is a high-efficiency step-down (buck) switching regulator produced by Texas Instruments. It is part of the SIMPLE SWITCHER® family, designed to provide an easy-to-use solution for implementing efficient high-voltage step-down regulators with a minimum number of external components. This regulator features a 42 V N-channel MOSFET switch capable of delivering up to 1 A of load current, making it suitable for a wide range of applications requiring high efficiency and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5 V to 42 V |
| Output Voltage Options | Adjustable (as low as 1.285 V), Fixed 5 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 |
| Feedback Reference Accuracy | ±1.5% |
| MOSFET Resistance | 200 mΩ N-Channel MOSFET |
| Efficiency | > 90% |
| Shutdown Current | 25 µA (typ) |
| Soft-Start Time | 500 µs (typ) |
Key Features
- Wide Input Voltage Range: 4.5 V to 42 V
- Internally Compensated Voltage Mode Control
- Stable with Low ESR Ceramic Capacitors
- Precision Enable Pin
- Integrated Boot-Strap Diode and Soft-Start
- Fully WEBENCH® Enabled for easy design and simulation
- Step-Down and Inverting Buck-Boost Applications
- AEC-Q100 Grade 1 Qualified for Automotive Use (LM22675Q)
- SO PowerPAD-8 (Exposed Pad) Package
- Built-in Thermal Shutdown and Current Limiting
Applications
The LM22675MRX-ADJ/NOPB is versatile and can be used in various applications, including:
- High-Voltage Step-Down Regulators
- Inverting Buck-Boost Converters
- Automotive Systems (LM22675Q is AEC-Q100 Grade 1 Qualified)
- Industrial Power Supplies
- Consumer Electronics
- Telecommunications Equipment
Q & A
- What is the input voltage range of the LM22675MRX-ADJ/NOPB?
The input voltage range is 4.5 V to 42 V. - What are the output voltage options for this regulator?
The output voltage can be adjustable (as low as 1.285 V) or fixed at 5 V. - What is the maximum output current of the LM22675MRX-ADJ/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 LM22675MRX-ADJ/NOPB?
The operating junction temperature range is –40°C to 125°C. - What type of package does the LM22675MRX-ADJ/NOPB come in?
The regulator comes in an HSOIC (DDA) package with 8 pins. - Does the LM22675MRX-ADJ/NOPB have built-in thermal shutdown and current limiting?
Yes, it does have built-in thermal shutdown and current limiting. - Is the LM22675MRX-ADJ/NOPB suitable for automotive applications?
Yes, the LM22675Q version is AEC-Q100 Grade 1 Qualified for automotive use. - What is the efficiency of the LM22675MRX-ADJ/NOPB?
The efficiency is greater than 90%. - How much current does the regulator draw in shutdown mode?
The regulator draws 25 µA (typ) in shutdown mode.
